Multi V Service Manual PDF

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LG
System
Heat Pump Air Conditioner
System SERVICE MANUAL
SERVICE MANUAL
MODELS: CRUN/CRNN Series
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Air Conditioner Service Manual
TABLE OF CONTENTS
Model Name Namerclature...........................................................................3
Model Names.................................................................................................4
Safety Precautions .......................................................................................5
Indoor Units.............................................................................................9
Ceiling Mounted cassette Type (1 way) ................................................10
Ceiling Mounted Cassette Type (4 way)................................................20
Ceiling Mounted Duct Type (High static) ..............................................35
Ceiling Mounted Duct Type (Low static)...............................................47
Convertible Type .....................................................................................57
Wall Mounted Type..................................................................................76
Art Cool Type (Mirror).............................................................................92
Art Cool Type.........................................................................................110
Art Cool Type (Wide).............................................................................126
Flor Standing Type................................................................................143

Outdoor Units .....................................................................................153
Control Devices and Functions ...........................................................181
Trouble Shooting Guide .......................................................................209
Appendix................................................................................................243
2
Model Name Nomenclature
Indoor Unit
CRN N 07 6 SR A 0
Serial Number
Combinations of functions
A: Basic Function
Art Cool Type Panel Color
B: Blue, C: Cherry, D: Wood, M: Metal
N: Walnut, R: Mirror, W: White, G: Gold
Chassis Name
Electrical Ratings
1: 1ø, 100V~115V, 60Hz, 2: 1ø, 220V~240V, 60Hz
6: 1ø, 220V~240V, 50Hz, 7: 1ø, 100V~115V, 50Hz
Total Cooling Capacity in Btu/h unit

Ex) 5,000 Btu/h ➞ ‘05’ , 18,000 Btu/h ➞ ‘18’
Combination of Inverter Type and

Cooling Only or Heat Pump or Heat Recovery
N: AC Inverter and H/P, V: AC Inverter and C/O
Indicates that this is System indoor unit

using the R-407C.
Note: Suffix - Look: Wall Mounted Type
- Panel: Ceiling Mounted Cassette Type
Outdoor Unit
CRU N 100 8 T 0
Serial Number
Air Discharge Type
S: Side discharge
T: Top discharge
Electrical Ratings
8: 3ø, 380V~415V, 50Hz, 9: 3ø, 380V~415V, 60Hz
A: 3ø 220V, 50Hz, B: 3ø, 220V, 60Hz
C: 3ø, 440V~460V, 50Hz, D: 3ø, 440V~460V, 60Hz
Total Cooling Capacity in Horse Power(Hp) unit

Ex) 4.5 Hp ➞ ‘45’ , 10 Hp ➞ ‘100’
Combination of Inverter Type and

Cooling Only or Heat Pump or Heat Recovery
N: AC Inverter and H/P, V: AC Inverter and C/O
Indicates that this is System outdoor unit

using the R-407C.
Service Manual 3
Model Names
Indoor Unit
Model Name
Chassis Capacity, kW(Btu/h)
Category Type
Name 2.1 2.6 3.5 5.3 7.0 8.2 10.6 12.3 14.1
(7,000) (9,000) (12,000) (18,000) (24,000) (28,000) (36,000) (42,000) (48,000)
CRNN CRNN CRNN
Wall SR 076SRA0 096SRA0 126SRA0
- - - - - -
Mounted General
CRNN
Type ST - - -
186STA0
- - - - -
CRNN CRNN CRNN

Mirror SU 076SU*0 096SU*0 126SU*0
- - - - - -
Art CRNN CRNN

Art Cool
Cool
SP -
096SP*0 126SP*0
- - - - - -
CRNN CRNN
Wide SV - -
126SV*0 186SV*0
- - - - -
CRNN CRNN CRNN

1 Way TC 076TCA0 096TCA0 126TCA0
- - - - - -
Ceiling CRNN CRNN
Cassette TE - -
126TEA0 186TEA0
- - - - -
4 Way
CRNN CRNN CRNN CRNN CRNN
TD - - - -
246TDA0 286TDA0 366TDA0 426TDA0 486TDA0
Ceiling CRNN CRNN
& Floor
Convertible VB - - -
186VBA0 246VBA0
- - - -
CRNN CRNN
BH - - -
186BHA0 246BHA0
- - - -
High CRNN CRNN CRNN

Static
BG - - - - -
286BGA0 366BGA0 426BGA0
-
Ceiling CRNN
Concealed BE - - - - - - - -
486BEA0
Duct CRNN
Low
BN 076BNG0
- - - - - - - -
Static CRNN CRNN

BJ -
096BJG0 126BJG0
- - - - - -
CRNN
CAA 076CAA0
- - - - - - - -
CRNN CRNN
Floor With CBA 096CBA0 126CBA0
- - - - - -
Standing Case CRNN
CCA 186CCA0
CRNN
CDA 246CDA0
Outdoor Unit
Model name
Capacity, Hp(Btu/h) Power
Series Supply
4.5 10
(44,000) (95,500)
Inverter Series CRUN CRUN 3ø, 4W,380V~415V,

458S0 1008T0 50Hz
(Heat Pump)
4
Safety Precautions
Safety Precautions
To prevent indury to the user or other people and property damage the following instructions must be followed.
■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the
following indications.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
This symbol indicates a part which must be grounded.
This symbol indicates that caution should be taken with rotating parts.
(This symbol is displayed on the main unit label.) <Color: Tellow>
This symbol indicates that the main switch must be turned off before service.
(This symbol is displayed on the main unit label.) <Color: Blue>
This symbol alerts you to the risk of electric shock.

(This symbol is displayed on the main unit label.) <Color: Yellow>
This symbol alerts you to the risk of hot surface.

(This symbol is displayed on the main unit label.) <Color: Yellow>
This symbol alerts you to hazards that could cause harmto the air conditioner.
NOTICE This symbol indicates special notes.
ELV Pay attention to electric shock.

And at servicing, please shut down the power supply for both of Indoor and Outdoor
Unit.
Carefully read the labels affixed to the main unit.
Service Manual 5
Safety Precautions
Cautions before installation
Use the specified cables for wiring. Make the Always use accessories specified by LG
connections securely so that the outside force Electronics.
of the cable is not applied to the terminals.
- Inadequate connection and fastening may gen- - Ask an authorized technician to install the
erate heat and cause a fire. accessories. Improper installation by the user
may result in water leakage, electric shock, or
fire.
Never repair the unit. If the air conditioner Do not touch the heat exchanger fins.
must be repaired, consult the dealer.
- If the unit is repaired improperly, water leakage, - Improper handling may result in injury.
electric shock, or fire may result.
If refrigerant gas leaks during service work, Have all electric work done by a licensed
ventilate the room. electrician according to "Electric Facility
Engineering Standard" and "Interior Wire
Regulations" and the instructions given in
this manual and always use a special circuit.
- If the refrigerant gas comes into contact with a - If the power source capacity is inadequate or
flame, poisonous gases will be released. electric work is performed improperly, electric
shock and fire may result.
Securely install the cover of control box and When installing and moving the air condition-
the panel. er to another site, do not charge it with a
refrigerant different from the refrigerant
(R407C) specified on the unit.
- If the cover and panel are not installed properly, - If a different refrigerant or air is mixed with the
dust or water may enter the outdoor unit and fire original refrigerant, the refrigerant cycle may
or electric shock may result. malfunction and the unit may be damaged.
If the air conditioner is installed in a small When moving and reinstalling the air condi-
room, measures must be taken to prevent the tioner, consult the dealer or an authorized
refrigerant concentration from exceeding the technician.
safety limit when the refrigerant leaks.
- Consult the dealer regarding the appropriate - If the air conditioner is installed improperly, water
measures to prevent the safety limit from being leakage, electric shock, or fire may result.
exceeded. Should the refrigerant leak and cause
the safety limit to be exceeded, hazards due to
lack of oxygen in the room could result.
6 Indoor Unit
Safety Precautions
After completing service work, make sure Do not reconstruct or change the settings of
that refrigerant gas is not leaking. the protection devices.
- If the refrigerant gas leaks and is exposed to a - If the pressure switch, thermal switch, or other
fan heater, stove, oven, or other heat source, it protection device is shorted and operated
may generate noxious gases. forcibly, or parts other than those specified by
LG Electronics are used, fire or explosion may
result.
Do not install the unit where combustible gas Do not use the air conditioner where food,
may leak. pets, plants, precision instruments, or art-
work are kept.
- If the gas leaks and accumulates around the - The quality of the food, etc. may deteriorate.
unit, an explosion may result.
Do not use the air conditioner in special envi- Do not install the unit on a structure that may
ronments. cause leakage.
- Oil, steam, sulfuric smoke, etc. can significantly - When the room humidity exceeds 80% or when
reduce the performance of the air conditioner or the drain pipe is clogged, condensation may drip
damage its parts. from the indoor unit. Perform collective drainage
work together with the outdoor unit, as required.
Take measures to prevent children from

touching the unit.
- Injuries such as cuts could occur if a child
touches the surface of the fins on the heat
exchanger.
Cautions for electrical work and movement
Ground the unit. Install the power cable so that tension is not
applied to the cable.
- Do not connect the ground wire to gas or water - Tension may cause the cable to break and gen-
pipes, lightning rods, or telephone ground lines. erate heat and cause a fire.
Improper grounding may result in electric shock.
Use power cables of sufficient current carry- Use only a circuit breaker and fuse of the
ing capacity and rating. specified capacity.
- Cables that are too small may leak, generate - A fuse or circuit breaker of a larger capacity or a
heat, and cause a fire. steel or copper wire may result in a general unit
failure or fire.
Service Manual 7
Safety Precautions
Do not wash the air conditioner units. Be careful that the installation base is not
damaged by long use.
- Washing them may cause an electric shock. - If the damage is left uncorrected, the unit may
fall and cause personal injury or property
damage.
Safely dispose of the packing materials.

- Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries.
- Tear apart and throw away plastic packaging bags so that children will not play with them. If children
play with a plastic bag which was not torn apart, they face the risk of suffocation.
Cautions before the test run
Turn on the power at least 12 hours before starting operation.

- Starting operation immediately after turning on the main power switch can result in severe damage to
internal parts. Keep the power switch turned on during the operational season.
Do not touch the switches with wet fingers.

- Touching a switch with wet fingers can cause an electric shock.
Do not touch the refrigerant pipes during and immediately after operation.
- During and immediately after operation, the refrigerant pipes may be hot or cold, depending on the
condition of the refrigerant flowing through the refrigerant piping, compressor, and other refrigerant
cycle parts. Your hands may suffer burns or frost-bite if you touch the refrigerant pipes.
Do not operate the air conditioner with the panels and guards removed.
- Rotating, hot, or high-voltage parts can cause injuries.
Do not turn off the power immediately after stopping operation.

- Always wait at least five minutes before turning off the power. Otherwise, water leakage and trouble
may occur.
8 Indoor Unit
Indoor Unit
Indoor Units
Service Manual 9
CRNN-TC
Ceiling Mounted Cassette Type (1Way)
1. Specifications .............................................................................11
2. Functions ....................................................................................12
3. Operation Details........................................................................13
4. Dimensional Drawings ...............................................................15
5. Piping Diagrams .........................................................................16
6. Wiring Diagrams .........................................................................17
7. Exploded View ............................................................................18
8. Replacement Parts List..............................................................19
10 Indoor Unit
Specifications
1. Specifications
Model UnitCRNN076TCA0 CRNN096TCA0 CRNN126TCA0
W 2,100 2,600 3,500
Cooling Capacity kcal/h 1,806 2,235 3,009
Btu/h 7,165 8,871 11,942
Indoor Unit
Cassette-1way
W 2,363 2,925 3,938
Heating Capacity kcal/h 2,031 2,515 3,385
Btu/h 8,061 9,980 13,435
Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate
mm 860*390*180 860*390*180 860*390*180
Dimensions (W*H*D)
inch 33.8*15.3*7.0 33.8*15.3*7.0 33.8*15.3*7.0
Coil Rows x Columns x FPI 2 x 12 x 18 2 x 12 x 21 2 x 12 x 21
Face Area m 2
0.184 0.184 0.184
Moisture removal l/h. 1.0 1.0 1.5
Type Cross Flow Fan Cross Flow Fan Cross Flow Fan
Motor Output x Number W 14 x 1 14 x 1 14 x 1
Fan
cmm 6/5/4 7/6/5 10/9/8
Air Flow Rate(H/M/L)
cfm 225/197/168 246/216/195 353/317/283
Drive Direct Direct Direct
Speed Control Phase Control Phase Control Phase Control
Temperature Control Microprocessor, Thermostat for cooling and heating
Sound Absorbing Thermal Insulation Material Foamed polystyrene Foamed polystyrene Foamed polystyrene
Safety Device Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor
Liquid Side mm(inch) 6.35 (1/4) 6.35 (1/4) 6.35 (1/4)
Pipe Connections Gas Side mm(inch) 12.7 (1/2) 12.7 (1/2) 12.7 (1/2)
Drain Pipe(Internal Dia.) mm 25 25 25
Net Weight kg(lbs) 17(37.5) 17(37.5) 17(37.5)
Noise Level (Sound Press,1.5m, H/M/L) dB±3 35/32/29 37/34/31 39/36/35
Power Supply Ø,V,Hz 1,220~240,50 1,220~240,50 1,220~240,50
Power Cable AWG#:P*mm2 12:3*2.5 12:3*2.5 12:3*2.5
Refrigerant Control L.E.V L.E.V L.E.V
Panel Color White White White
Decoration Panel Dimensions (W*H*D) mm 1050*480*30 1050*480*30 1050*480*30
inch 41.3*18.9*1.2 41.3*18.9*1.2 41.3*18.9*1.2
Owner Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp
Standard Accessories Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers, Positioning Jig
for Installation, Insulation for Hanger Bracket, Air Outlet Blocking Pad.
Notes:- Conversion Formula

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB kcal/h = kW x 860
- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB Btu/h = kW x 3414
- Interconnecting Piping Length 7.5m cfm = m3/min x 35.3
- Level Difference of Zero.
Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB
- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB
- Interconnecting Piping Length 7.5 m
2. Capacities are Net Capacities.
3. Due to our policy of innovation some specifications may be changed without notification.
4. L.E.V. : Linear Expansion Valve
Service Manual 11
Functions
2. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature • Room temperature sensor. (Thermistor)
Room temperature control • Maintains the room temperature in accordance with the Setting temperature
Starting Current Control • Indoor fan is delayed for 5 seconds at the starting.
Time Delay Safety Control • Restarting is inhibited for approx. 3 minutes.
Indoor Fan Speed Control • Jet, High, Med, Low
Soft Dry Operation Mode • Intermittent operation of fan at low speed.
Airflow Direction Control • The louver can be set at swing up and down automatically.
Auto Restart • Although the air-conditioner is turned off by a power failure, it is restarted auto-
matically previous operation mode after power supply.
Deice (defrost) control (Heating) • Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
• The indoor fan does not rotate until the evaporator pip-
Hot-start Control (Heating)
ing temperature will be reached at 25°C.
• To install a unit is very convenient because of smaller
Compact and light design
size than textile.
• The most advanced low-noise design.
Low noise
• The adoption of turbo fan and round type heat exchang-
er give the quietest operation.
• Long life wrinkle(type) and washable and anti-bacteria
Long life filter
filter is adopted.
• Built-in drain pump automatically drains water.
High head Drain pump
• A standard drain-head height of up to 700mm is possible.
High-Ceiling corresponding Function • According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.
Central Control(Optional) • It is operating individually or totally by central control function.
12 Indoor Unit
Operation Details
3. Operation Details
(1) The function of main control
■ Time Delay Safety Control
Indoor Unit
Cassette-1way
• 5sec Vertical louvers are delayed for 5 secs to be opened to prevent the frictional sound between louver and air
flow.
• 30sec The 4-way valve is ceased for 30sec. to prevent abnormal noise when the Heating operation is OFF or
switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch.
■ Auto Swing Control

• This function is to swing the louver up and down automatically.
■ Air-Filter Checking Control

• 'Filter' sign will appear on the remote controller display and main body display when an air-filter is polluted. Then
clean the air-filter referring to Owners Manual.
■ Soft-Dry Operation
• The indoor fan speed is automatically set to the low, and fan speed control is not available because of already being
set to the best speed for Dry Operation by microcontroller control.
■ Cooling Mode Operation

• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con-
troller and the operation diagram is as follows.
Intake Air Temperature

SET TEMPERATURE +0.5°C
(COMP. ON)
SET TEMPERATURE
SET TEMPERATURE -0.5°C
(COMP. OFF) More than More than
3 minutes 3 minutes
Selected Selected Selected
INDOOR FAN Low Low
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
Service Manual 13
Operation Details
■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as follows.
Intake Air Temperature. minimum 3min

Setting Temperature .+3°C
(Compressor OFF)
A B A
Setting Temperature
(Compressor ON)
1min minimum minimum minimum
10sec. 1min. 10sec.
INDOOR FAN (Hot Start) Selected

Low OFF Low Selecting fan Low OFF
Low
OFF Fan Speed speed
COMPRESSOR ON OFF ON OFF
A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed,
when it becomes lower than 40˚C fan stops.
B point; When the indoor Heat-Exchanger temperature is higher than 42°C, fan operates at selected fan
speed, when it becomes lower than 39°C, the fan operates at low speed.
■ Hot-Start Control
• The indoor fan sdoes not rotate until the evaporator piping temperature reaches to 25°C.
• If the evaporator piping temperature drops below 22°C, indoor fan stops again.
• The operation diagram is as follows.
PIPING 1min
TEMPERATURE
25°C
22°C
Selected
INDOOR FAN OFF LOW
fan speed
COMPRESSOR ON
14 Indoor Unit
Dimensional Drawings
4. Dimensional Drawings
Indoor Unit
Cassette-1way
20 or more
Ceiling Ceiling Board
Ceiling Board
30 or less
or more
50 or 50 or
more more
330 or less
Above 250
100
Unit:cm
Floor
Ø80 430
180
91.6
Ø55 130
931.6
893.4
16.7 860
30.8
7 846
50
328.4
390
42.7
194.4
164
155
37
91.6
97.7
116.3 180
141.8
180 1050
(Unit: mm)
694.5
480
Service Manual 15
Piping Diarams
5. Piping Diagrams
:Cooling
Heat Exchanger LEV :Heating
Filter
C.F.F.
Filter
lndoor unit
: Thermistor
Refrigerant pipe connection port diameter

[unit: mm(inch)]
Model Gas Liquid
CRNN076TCA0
CRNN096TCA0 12.7(1/2) 6.35(1/4)
CRNN126TCA0
16 Indoor Unit
Wiring Diagrams
6. Wiring Diagrams
Indoor Unit
Cassette-1way
1(L) 2(N) 3 4
(Transmission)
CONNECTOR
NUMBER SPEC COLOR DESCRIPTION
CN-POWER AC POWER SUPPLY WHITE AC POWER LINE INPUT FOR INDOOR CONTROLLER
CN-MOTOR2 AC FAN MOTOR OUTPUT YELLOW MOTOR OUTPUT OF PHASE CONTROL
CN-D/PUMP DRAIN PUMP OUTPUT WHITE AC OUTPUT FOR DRAIN PUMP
CN-COMM COMMUNICATION WHITE COMMUNICATION BETWEEN INDOOR AND OUTDOOR
CN-DISP1 DISPLAY WHITE DISPLAY OF INDOOR STATUS
CN-LEV LEV OUTPUT WHITE LEV CONTROL OUTPUT
CN-STEP/M1 STEP MOTOR WHITE STEP MOTOR OUTPUT
CN-FLOAT FLOAT SWITCH INPUT BLUE FLOAT SWITCH SENSING
CN-PIPE PIPE SENSOR WHITE PIPE THERMISTOR
CN-PIPE/O DISCHARGE PIPE SENSOR RED DISCHARGE PIPE THERMISTOR
CN-ROOM ROOM SENSOR BLUE ROOM THERMISTOR
CN-REMO REMOTE CONTROLLER WHITE REMOTE CONTROL LINE
CN-AIRC AIR CLEAN WHITE AIR CLEAN SIGNAL
Service Manual 17
18
352150-2
346810 158580
266012
130911
352150-1
Exploded View
Indoor Unit
359011
137211 330870 352115
352116
7. Exploded View
263230-1
268712 263230-2
263230-3
135802
354210
146811
W0CZZ
268714 249951
152312
Basic
435310
267110
Replacement Parts List
8. Replacement Parts List

PART No.
LOCATION No. DESCRIPTION REMARK
CRNN076TCA0 CRNN096TCA0 CRNN126TCA0
130911 CABINET ASSEMBLY,INDOOR 3091A10024A R
Indoor Unit
Cassette-1way
146811 MOTOR ASSEMBLY,STEP 4681AR2727G R
152312 FILTER ASSEMBLY,AIR CLEANER 5231A10003A R
158580 PUMP ASSEMBLY,WATER 5859A10001A R
137211 PANEL ASSEMBLY,FRONT(INDOOR) 3721A10023Y R
249951 CONTROL BOX ASSEMBLY,INDOOR 4995A10024Q 4995A10024R 4995A10024X R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323AQ3214P R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323AQ3226E R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226V R
266012 SWITCH ASSEMBLY,FLOAT 6601A20001E R
267110 REMOTE CONTROLLER ASSEMBLY 6711A10002A R
268712 PWB(PCB) ASSEMBLY,DISPLAY 6871A20096B R
268714 PWB(PCB) ASSEMBLY,MAIN 6871A10089A 6871A10089B 6871A10089C R
330870 DRAIN PAN ASSEMBLY 3087A10005A R
346810 MOTOR ASSEMBLY,AC 4681A20003V R
352115 TUBE ASSEMBLY,EVAPORATOR IN 5211A10303A R
352116 TUBE ASSEMBLY,EVAPORATOR OUT 5211A20230D R
354210 EVAPORATOR ASSEMBLY,FIRST 5421A10011B 5421A10011A 5421A10011A R
359011 FAN ASSY,CROSS FLOW 5901AR2441A R
435310 GRILLE ASSEMBLY,INLET 3531A10062D R
W0CZZ CAPACITOR,DRAWING 3H00671E R
352150-1 DRAIN TUBE ASSEMBLY 5251AP2984A R
352150-2 DRAIN ASSEMBLY,TUBE 5251A20001A R
Service Manual 19
CRNN-TE / CRNN-TD
Ceiling Mounted Cassette Type (4Way)
1. Specifications .............................................................................21
2. Functions ....................................................................................22
5. Piping Diagrams .........................................................................27
6. Wiring Diagrams .........................................................................28
7. Exploded View ............................................................................29
20 Indoor Unit
Specifications
1. Specifications
Model Unit
CRNN126TEA0 CRNN186TEA0 CRNN246TDA0
W 3,500 5,300 7,000
Btu/h 11,942 18,084 23,885
Kw 3,938 5,963 7,875
Btu/h 13,435 20,345 26,870
Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate
mm 570*570*269 570*570*269 840*840*288
Dimensions (W*H*D)
inch 22.4*22.4*10.5 22.4*22.4*10.5 33.0*33.0*11.3
Coil Rows x Columns x FPI 2*11*19 2*11*21 2*12*21
Face Area m2 0.274 0.274 2*0.22
Type Turbo Fan Turbo Fan Turbo Fan
Motor Output x Number W 20 22.4 52.5
Fan
Air Flow Rate(H/M/L) cmm 11 / 10 / 9 13 / 12 / 10 19 / 17 / 15
cfm 353/317/283 459/423/353 670/600/530
Drive Direct Direct Direct
Speed Control Phase control Phase control Phase control
Temperature Control
Cassette-4way
Microprocessor, Thermostat for cooling and heating
Indoor Unit
Sound Absorbing Thermal Insulation Material Foamed polystyrene Foamed polystyrene Foamed polystyrene
Safety Device Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor
Net Weight kg(lbs) 19(41.9) 19(41.9) 32(70.5)
Noise Level (Sound Press,1.5m, H/M/L) dB±3 38 / 35 / 32 41 / 39 / 37 36 / 34 / 32
Panel Color White White White
Decoration Panel Dimensions (W*H*D) mm 670*670*30 670*670*30 950*950*30
inch 26.4*26.4*1.2 26.4*26.4*1.2 37.4*37.4*1.2
Owner Manual, Installation Manual, Paper Pattern for Installation, Drain
Standard Accessories Hose, Clamp Metal, Washer fixing Plate, Sealing Pads, Clamps, Screws,
Washer for Hanging Bracket, Insulation for Fitting

Service Manual 21
Functions
2. Functions
Indoor Unit
Room temperature control • Maintains the room temperature in accordance with the Setting Temperature.
Indoor Fan Speed Control • Jet, High, Med, Low
Airflow Direction Control • The louver can be set at swing up and down automatically.
Hot-start Control (Heating) • The indoor fan does not rotate until the evaporator pip-
ing temperature will be reached at 25°C.
• To install a unit is very convenient because of smaller

Compact and light design
size than textile.
• The most advanced low-noise design.
Low noise
• The adoption of turbo fan and round type heat exchang-
er give the quietest operation.
• Long life wrinkle(type) and washable and anti-bacteria
Long life filter
filter is adopted.
• Built-in drain pump automatically drains water.
High head Drain pump
• A standard drain-head height of up to 700mm is possible.
High-Ceiling corresponding Function • According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.
22 Indoor Unit
Operation detail
3. Operation detail
• 5 sec... Vertical air flow direction control louvers open in 5 seconds to prevent noise between louvers and wind.
• 5 sec... The 4-way valve is ceased for 5 sec. to prevent the refrigerant-gas abnormal noise when the Heating
operation is OFF or switched to the other operation mode when compress is off.
■ Auto Swing Control

• This function is to swing the louver up and down automatically.
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
Cassette-4way
Indoor Unit
troller and the operation diagram is as following
COMP. ON
(SET TEMPERATURE +0.5°C)
COMP. OFF
(SET TEMPERATURE -0.5°C) More than More than
3 minutes 3 minutes
Selecting Selecting Selecting

INDOOR FAN Low Low
Service Manual 23
Operation detail

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Intake Air temperature minimum 3min

Setting Temperature .+3°C
(Compressor OFF)
A B A
Setting Temperature
(Compressor ON)
1min minimum minimum minimum
10sec. 1min. 10sec.
INDOOR FAN Hot Start Low Selecting Low OFF Low Selecting fan Low OFF
Fan Speed speed
• A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed,
• B point; When the indoor Heat-Exchanger temperature is higher than 31°C, fan operates at selected fan
speed, when it becomes lower than 31°C, the fan operates at low speed for 10sec, after 10sec, it
operates at selected fan speed.
■ Hot-start Control
The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C.
The operation diagram is as following.
PIPING 1min
TEMPERATURE
25°C
22°C
INDOOR FAN OFF LOW Selected Fan
COMPRESSOR ON
24 Indoor Unit
CRNN126TEA0, CRNN186TEA0,
30 or more
Ceiling Board
30 or less
269
or more
50 or 50 or
more more
330 or less
Above 250
100
670
670
Unit:cm
Floor
670 570
450
Cassette-4way
Indoor Unit
570
521
670
CLOSE OPEN OPEN CLOSE
40
30
110 110
269
90
90
190.5
55
160
120.4
52
(unit:mm)
Service Manual 25
CRNN246TDA0, CRNN286TDA0, CRNN366TDA0

CRNN426TDA0, CRNN486TDA0
30 or more
Ceiling Board
30 or less
290
or more
950 50 or 50 or
more more
330 or less
Above 250
100
950
Unit:cm
Floor
840
950 678
785
840
950
40
30
110 110
290
210.5
52 180
55
90
90
140
(unit:mm)
26 Indoor Unit
Piping Diagrams
5. Piping Diagrams
:Cooling
Filter
Turbo Fan Filter
lndoor unit
: Thermistor
Cassette-4way
[unit: mm(inch)]
Indoor Unit
Model Gas Liquid
CRNN126TEA0 12.7(1/2) 6.35(1/4)
CRNN186TEA0 15.88(5/8) 9.52(3/8)
CRNN246TDA0 15.88(5/8) 9.52(3/8)
CRNN286TDA0 15.88(5/8) 9.52(3/8)
CRNN366TDA0 19.05(3/4) 9.52(3/8)
CRNN426TDA0 19.05(3/4) 12.7(1/2)
CRNN486TDA0 19.05(3/4) 12.7(1/2)
Service Manual 27
Wiring Diagrams
6. Wiring Diagrams
1(L) 2(N) 3 4
(Transmission)
CONNECTOR
28 Indoor Unit
Explodede View
7. Exploded View
CRNN126TEA0, CRNN186TEA0
249951
268714
263230-1
354211
Cassette-4way
Indoor Unit
352115
352118
263230-2
263230-3
158591
266012
330870
Service Manual 29
Explodede View
130411
W0CZZ
346810
359011
146811 268712
140570
152312
130911-2
135802
137211
352150-1
130911-1
267110
352150-2
30 Indoor Unit
Explodede View
CRNN246TDA0, CRNN286TDA0, CRNN366TDA0, CRNN426TDA0, CRNN486TDA0
249951
249951
268714
263230-3
Cassette-4way
Indoor Unit
354211-1
130411
354211-2
352114
263230-1 55211G
263230-2 352118
330870
158591
266012
Service Manual 31
Explodede View
130411
W0CZZ
146811 268712
346810
152312
359012
130913-2 140570
130911-2
135314
135802
137211
130911-1
352150
130913-1
267110 152510
32 Indoor Unit

LOCATION PART NO.
DESCRIPTION REMARK
NO.
CRNN126TEA0 CRNN186TEA0
130411 BASE ASSY,WELD[INDOOR] 3041A10013A R

130911-1 CABINET ASSEMBLY,INDOOR 3091A10023C R
130911-2 CABINET ASSEMBLY,INDOOR 3091A10023D R
135802 DOOR 3580A20005A R
137211 PANEL ASSY,FRONT(INDOOR) 3721A10021A R
140570 LOCKER 4056A20001A R
146811 MOTOR ASSY,STEP 4681AP2968D R
152312 FILTER ASSY,AIR CLEANER 5231A10005A R
158591 PUMP ASSEMBLY,WATER 5859A20001H R
249951 CONTROL BOX ASSEMBLY,INDOOR 4995A10083A 4995A10083B R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323AQ3214B R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323A30002B R
Cassette-4way
Indoor Unit
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226R R
266012 SWITCH ASSY,FLOAT 6601A20001F R
268712 PWB(PCB) ASSY,DISPLAY 6871A20096C R
268714 PWB(PCB) ASSEMBLY,MAIN 6871A10089D 6871A10089E R
346810 MOTOR ASSEMBLY,SINGLE 4681AC2026E 4681AC2026D R
352115 TUBE ASSEMBLY,EVAPORATOR IN 5211A10335B 5211A10335A R
352118 TUBE ASSEMBLY,MENIFOLD(INDOOR) 5211A20241N 5211A20241P R
354211 EVAPORATOR ASSY,BENDING 5421A10006A 5421A10006B R
359011 FAN,TURBO 5900A10004A R
W0CZZ CAPACITOR,DRAWING 3H00660N R
352150-1 DRAIN TUBE ASSEMBLY 5251AP2984A R
352150-2 DRAIN ASSEMBLY,TUBE 5251A20002A R
Service Manual 33
LOCATION PART NO.

DESCRIPTION REMARK
NO. CRNN246TDA0 CRNN286TDA0 CRNN366TDA0 CRNN426TDA0 CRNN486TDA0
354211-1 EVAPORATOR ASSY 5421A10016A R

354211-2 EVAPORATOR ASSY 5421A10016B R
352118 TUBE ASSEMBLY, MENIFOLD (INDOOR) 5211A20251B R
TUBE ASSEMBLY, MENIFOLD (INDOOR) 5211A20251H 5211A20251G R
352114 TUBE ASSEMBLY, DISTRIBUTOR 5211A10299A R
55211G TUBE ASSEMBLY, EXPANSION 5211A10298A R
158591 PUMP ASSEMBLY, WATER 5859A20001D R
266012 SWITCH ASSY, FLOAT 6601A20001F R
330870 DRAIN PAN ASSY 3087A100006A R
249951 CONTROL BOX ASSY 4995A20268X 4995A20268Y 4995A20268A 4995A20268Z 4995A10106L R
268714 PWB(PCB) ASSY, MAIN 6871A10089F F6871A10089G 6871A10089H 6871A10089S 6871A10089T R
130411 BASE ASSY, WELD INDOOR 3041A10016A R
346810 MOTOR ASSY, INDOOR 4681A20006J 4681A20006H R
359012 FAN,TURBO 5900A10003B R
140570 LOCKER 4056A20001B R
130911-1 CABINET ASSY, INDOOR 3091A10031A R
130911-2 CABINET ASSY, INDOOR 3091A10031B R
130913-1 CABINET ASSEMBLY, WELD 3091A10030A R
130913-2 CABINET ASSEMBLY, WELD 3091A10030B R
152510 DRAIN ASSY, TUBE 5251A20002B R
352150 DRAIN TUBE ASSY 5251AP2984A R
137211 PANEL ASSY, FRONT(INDOOR) 3721A10025A R
135314 GRILLE INLET 3530A10062A R
146811 MOTOR ASSY, STEP 4681A20055A R
268712 PWB(PCB) ASSY, DISPLAY 6871A20096C R
152312 FILTER ASSY 5231A10004A R
135802 DOOR LOCK 3580A20005A R
267110 WIRED REMOTE CONTROLLER 6711A10002A R
263230-1 THERMISTOR ASSY(PIPE-IN) 6323A30002A R
263230-2 THERMISTOR ASSY(PIPE-OUT) 6323AQ3226T R
263230-3 THERMISTOR ASSY(ROOM) 6323A30004C R
W0CZZ CAPACITOR 3H00660M 2A00986D R
34 Indoor Unit
CRNN-BH / CRNN-BG / CRNN-BE
Ceiling Concealed Duct Type (High static)
1. Specifications .............................................................................36
2. Functions ....................................................................................38
5. Piping Diagrams .........................................................................42
6. Wiring Diagrams .........................................................................43
7. Exploded View ............................................................................44
Indoor Unit
Duct-High
Service Manual 35
Specifications
1. Specifi cations
Model Unit CRNN186BHA0 CRNN246BHA0 CRNN286BGA0
W 5,300 7,000 8,200
Btu/h 18,084 23,885 27,995
W 5,963 7,875 9.255
Btu/h 20,345 26,870 31,494
Casing Galvanized Steel Plate
mm 880*260*450 880*260*450 1,180*298*450
Dimensions (W*H*D)
inch 34.6*10.2*17.7 34.6*10.2*17.7 46.4*11.7*17.7
Face Area m2 0.15 0.15 0.20
Type Sirocco Fan Sirocco Fan Sirocco Fan
Motor Output x Number W 118 118 272
Fan
Air Flow Rate(H/M/L) cmm 16.5 / 14.5 / 13 18 / 16.5 / 14 30 / 27 / 25
cfm 583 / 512 / 459 636 / 583 / 494 1,059 / 953 / 882
External Static Pressure Pa 78.5 58.8 78.5
Drive Direct
Speed control Phase control
Sound Absorbing Thermal Insulation Material Foamed polystyrene
Safety Device Fuse, Thermal Fuse for Fan Motor
Net Weight kg(lbs) 34(74.9) 35(77.2) 38(83.8)
Noise Level (Sound Press,1.5m, H/M/L) dBA±3 36 / 34 / 32 38 / 35 / 32 40 / 38 / 36
Owner Manual, Installation Manual, Drain Hose, Clamp Metal, Insulation
Standard Accessories for Fitting, Sealing Pads, Clamps, Screws

kcal/h = kW x 860
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB
Btu/h = kW x 3414
- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB
cfm = m3/min x 35.3
- Interconnecting Piping Length 7.5m
36 Indoor Unit
Specifications
Model Unit CRNN366BGA0 CRNN426BGA0 CRNN486BEA0

W 10,600 12,300 14,100
Btu/h 36,188 41,992 48,137
W 11,925 13,837 15,885
Btu/h 40,712 47,410 54,231
mm 1,180*298*450 1,230*370*680 1,230*370*680
Dimensions (W*H*D)
inch 46.4*11.7*17.7 48.4*14.6*26.8 48.4*14.6*26.8
Face Area m2 0.20 0.55 0.25
Motor Output x Number W 272 391 391
Fan
Air Flow Rate(H/M/L) cmm 32/29/26.5 38/34/28 40/36/30
cfm 1,130/1,024/936 1,341/1,200/988 1,413/1,271/1,059
External Static Pressure Pa 78.5 78.5 98.1
Drive Direct
Speed control Phase control Steps control
Liquid Side mm(inch) 9.52(3/8) 12.7(1/2) 12.7(1/2)
Pipe Connections Gas Side mm(inch) 19.05(3/4) 19.05(3/4) 19.05(3/4)
Net Weight kg(lbs) 38(83.8) 70(154.3) 70(154.3)
Noise Level (Sound Press,1.5m, H/M/L) dBA±3 44/42/40 46/44/42 48/46/44
Indoor Unit
12:3*2.5 12:3*2.5 12:3*2.5
Duct-High
Power Cable AWG#:P*mm2
Owner Manual, Installation Manual, Drain Hose, Clamp Metal, Insulation for
Standard Accessories Fitting, Sealing Pads, Clamps, Screws

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m3/min x 35.3
Service Manual 37
Functions
2. Functions
Indoor Unit
Indoor Fan Speed Control • High, Med, Low
Hot-start Control (Heating) • The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C.
High head height Drain pump • A standard drain-head height of up to 700mm is possible.
Defrost(Deice) control (Heating) • Both the indoor and outdoor fan stops during defrosting.
Hot-start Control (Heating) • The indoor fan stops until the evaporator pipe temperature will be reached
at 28°C.
38 Indoor Unit
Operation Details
■ Time Delay safety Control
• 30sec... The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating
operation is OFF or switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch to another mode.

troller and the operation diagram is as following.

(COMP. ON)
Indoor Unit
Duct-High
3 minutes 3 minutes
INDOOR FAN Selecting Low Selecting Low Selecting

Service Manual 39
Operation Details

Intake Air Temperature minimum 3min

Setting Temperature +3°C
(Compressor OFF)
A B A
Setting Temperature
(Compressor ON)
1min minimum minimum
10sec. 10sec.
Hot Start Low Selecting Selecting fan

INDOOR FAN Low OFF Low Low OFF
Fan Speed speed
• B point; When the indoor Heat-Exchanger temperature is higher than 42°C, fan operates at seleted fan
• The indoor fan does not rotate until the evaporator piping temperature reaches 25°C.
• The operation diagram is as following.
PIPING 1min
TEMPERATURE
25°C
22°C
INDOOR FAN
COMPRESSOR ON
: Selected Fan : Low Fan : Fan Stop
40 Indoor Unit
k
A
B
h
i l
j
C
E
f
J
K
e
(G) a b c d
D
F
(Unit: mm)
Model A B C D E F (G) H J K a b c d e f h i j k l
186/246BH 932 882 355 45.5 450 30 87 750 163 260 61.5 243 212.3 243 110 130 52 66 81 30 158.5
286/366/426BG 1232 1182 355 45.5 450 30 87 830 186 298 229.5 243 232 243 116 160 53 59 81 19 158.5
486BE 1292 1230 570.5 54 680 30 120 1006 294 370 253.5 253 217 253 152 186 42 143 82 50 172
Top view Front view

Inspection hole
(unit: mm) (600X600)
Indoor Unit
Control box
Duct-High
H
1000
600 600
Front
Service Manual 41
Piping Diagrams
5. Piping Diagrams
:Cooling
Filter
Sirocco Fan Filter
lndoor unit
: Thermistor

[unit: mm(inch)]
Model Gas Liquid
CRNN186BHA0
CRNN246BHA0 15.88(5/8) 9.52(3/8)
CRNN286BGA0
CRNN366BGA0 19.05(3/4) 9.52(3/8)
CRNN426BGA0
19.05(3/4) 12.7(1/2)
CRNN486BEA0
42 Indoor Unit
Wiring Diagrams
6. Wiring Diagrams
Indoor Unit
1(L) 2(N) 3 4
Duct-High
(Transmission)
CONNECTOR
Service Manual 43
Exploded View
7. Exploded View
• CRNN186BHA0
• CRNN246BHA0
• CRNN286BGA0
• CRNN366BGA0 346810
359012
336610-1
336610-2
W0CZZ
263230-3 263230-2 267110
354210
263230-1
268714
249951
352118 152302
55211G
330870
158591
44 Indoor Unit
336610-2
359012-1
346810
359012-2
336610-1
• CRNN486BEA0
354210
W0CZZ
330870
352118
263230-3 263230-2 152302
263230-1
267110
35211C-2
35211C-1
249951
268714
158591
55211G
Exploded View
Service Manual 45
Duct-High
Indoor Unit

LOCATION Part No.
DESCRIPTION REMARKS
No. CRNN186BHA0 CRNN246BHA0
152302 FILTER(MECH),A/C 5230A30001M 5230A30001M R
152302 FILTER(MECH), A/C 5230A30001M R
158591 PUMP ASSEMBLY, WATER 5859A20002A R
249951 CONTROL BOX ASSEMBLY, INDOOR 4995A20164M 4995A20164L R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323AQ3214E R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323AQ3226G R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226W R
266012 SWITCH ASSEMBLY, FLOAT 6601A20001E R
267110 REMOTE CONTROLLER ASSEMBLY 6711A20043D R
268714 PWB(PCB) ASSEMBLY, MAIN 6871A10089J 6871A10089K R
330870 DRAIN PAN ASSEMBLY 3087A10008D R
336610 HOUSING(MECH), WRAPPER 3660A20017A R
HOUSING(MECH), WRAPPER 3660A20018A R
346810 MOTOR ASEMBLY, INDOOR 4681A10013C R
352118 TUBE ASSEMBLY, MENIFOLD(INDOOR) 5211A20465D R
354210 EVAPORATOR ASSEMBLY, FIRST 5421A20100A 5421A20100B R
359012 FAN ASSEMBLY, BLOWER 5901A10026A R
352115 TUBE ASSEMBLY, EVAPORATOR IN 5211A10305B 5211A10305A R
W0CZZ CAPACITOR, DRAWING 2A00986D R
LOCATION Part No.
DESCRIPTION REMARKS
No. CRNN286BGA0 CRNN366BGA0 CRNN426BGA0
152302 FILTER(MECH), A/C 5230A30001L R
249951 CONTROL BOX ASSEMBLY, INDOOR 4995A10127F 4995A10127G 4995A10127H R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323A30004D R
268714 PWB(PCB) ASSEMBLY, MAIN 6871A10089U 6871A10089L 6871A10089V R
330870 DRAIN PAN ASSEMBLY 3087A10008C R
336610 HOUSING(MECH), WRAPPER 3660A20019A R
HOUSING(MECH), WRAPPER 3660A20020A R
346810 MOTOR ASEMBLY, INDOOR 4681A10013A R
352118 TUBE ASSEMBLY, MENIFOLD(INDOOR) 5211A20416G R
354210 EVAPORATOR ASSEMBLY, FIRST 5421A10027C R
359012 FAN ASSEMBLY, BLOWER 5901A10026A R
W0CZZ CAPACITOR, DRAWING 2A00986D R
LOCATION Part No.
No. DESCRIPTION REMARKS
CRNN486BEA0
152302 FILTER(MECH), A/C 5230A30001A R
249951 CONTROL BOX ASSEMBLY, INDOOR 4995A10127J R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323A30004D R
268714 PWB(PCB) ASSEMBLY, MAIN 6871A10089W R
336610 HOUSING(MECH), WRAPPER 3661A20001E R
HOUSING(MECH), WRAPPER 3661A20001F R
346810 MOTOR ASEMBLY, INDOOR 4681A20005J R
352118 TUBE ASSEMBLY, MENIFOLD(INDOOR) 5211A30076B R
354210 EVAPORATOR ASSEMBLY, FIRST 5421A20008A R
359012-1 FAN ASSEMBLY, BLOWER 5833A20001A R
359012-2 FAN ASSEMBLY, BLOWER 5833A20001B R
W0CZZ CAPACITOR, DRAWING 0CZZA20001C R
35211C-1 TUBE ASSEMBLY,DISCHARGE(IN) 5211A30077A R
35211C-2 TUBE ASSEMBLY,DISCHARGE(OUT) 5211A30094B R
46 Indoor Unit
CRNN-BN / CRNN-BJ
Ceiling Concealed Duct Type (Low static)
1. Specifications .............................................................................48
2. Functions ....................................................................................49
5. Piping Diagrams .........................................................................53
6. Wiring Diagrams .........................................................................54
7. Exploded View ............................................................................55
Indoor Unit
Duct-Low
Service Manual 47
Specifications
1. Specifications
Model Unit CRNN076BNG0 CRNN096BJG0 CRNN126BJG0
W 2,100 2,600 3,500
Btu/h 7,165 8,871 11,942
W 2,363 2,925 3,923
Btu/h 8,061 9,980 13,435
Dimensions (W*H*D) mm 783*220*520 873*220*520 873*220*520
inch 30.8*8.7*20.5 34.3*8.7*20.5 34.3*8.7*20.5
Coil Rows*Steps*Fin Pitch inch 2*9*14 2*9*14 2*9*14
Moisture removal l/h 1.0 1.0 1.5
Fan Model D-7K D-9K D-12K
Motor Output W 13 17 20
Air Flow Rate(H/M/L) CMM 6.4/5.9/5.4 7.0/6.5/6.0 10.2/9.2/8.2
CFM 226/208/191 247/230/212 360/325/290
External Static Pressure Pa 0 0 0
Drive Direct
Speed control Steps Control
Temperature Control Microprocessor,Thermistat for cooling and heating
Safety Device Fuse,Thermal Fuse for Fan Motor
Pipe Connections Liquid Side mm(inch) 6.35(1/4) 6.35(1/4) 6.35(1/4)
Gas Side mm(inch) 12.7(1/2) 12.7(1/2) 12.7(1/2)
Net Weight kg(lbs) 23(50.7) 24(52.9) 24(52.9)
Noise Level(SoundPress,1.5m,H/M/L) dBA±3 36/34/32 37/35/33 38/36/34
Power Cable AWG#:P*mm2 12:3 * 2.5 12:3 * 2.5 12:3 * 2.5
Refrigerant Control LEV LEV LEV
Owner's Manual, Installation Manual, Drain Hose, Clamp Metal, Insulation for
Standard Accessories
Fitting, Sealing Pads, Clamps, Screws

kcal/h = kW x 860
Btu/h = kW x 3414
cfm = m3/min x 35.3
48 Indoor Unit
Functions
2. Functions
Indoor Unit
Indoor Unit
Duct-Low
Hot-start Control (Heating) • The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C.
High head height Drain pump • A standard drain-head height of up to 700mm is possible.
Indoor Unit
Duct-Low
Service Manual 49
Operation Details


(COMP. ON)

3 minutes 3 minutes

50 Indoor Unit
Operation Details


(Compressor OFF)
A B A
Setting Temperature
(Compressor ON)
10sec. 10sec.

Fan Speed speed
• The indoor fan does not rotate until the evaporator piping temperature reaches 25°C.
PIPING 1min
Indoor Unit
TEMPERATURE Duct-Low
25°C
22°C
INDOOR FAN
COMPRESSOR ON
Service Manual 51
D
E
C
H
J
G
F
Model A B C D E F G H J
CRNN076BNG0 783 667 300 100 500 20 639 120 220
CRNN096BJG0 873 767 300 100 500 20 729 120 220
CRNN126BJG0 873 767 300 100 500 20 729 120 220
Top view Front view

(unit: mm) Inspection hole
(600X600)
Control box
H
1000
600 600
Front
52 Indoor Unit
Piping Diagrams
5. Piping Diagrams
:Cooling
Filter
Sirocco Fan Filter
lndoor unit
: Thermistor

[unit: mm(inch)]
Model Gas Liquid
CRNN076BNG0
CRNN096BJG0 Ø12.7(1/2) Ø6.35(1/4)
CRNN126BJG0
Indoor Unit
Duct-Low
Service Manual 53
Wiring Diagrams
6. Wiring Diagrams
CN-PIPE/O
(Transmission)
CONNECTOR
54 Indoor Unit
Exploded View
7. Exploded View
152302 137214 137213-1
249951
268714
354210
137213-2 263230-1
263230-2
263230-3
346810
135500-2
158591
336610
437214
147901
359012
Indoor Unit
Duct-Low
135500-1
330870
267110
Service Manual 55

PART NO.
LOCATION No. DESCRIPTION REMARKS
CRNN076BNG0 CRNN096BJG0 CRNN126BJG0
135500-1 COVER 3550A20214A 3550A20214B 3550A20214B R
135500-2 COVER 3550A20215A 3550A20215A 3550A20215A R
137213-1 PANEL ASSEMBLY,SIDE 3721A20136A 3721A20136A 3721A20136A R
137213-2 PANEL ASSEMBLY,SIDE 3721A20136B 3721A20136B 3721A20136B R
137214 PANEL ASSEMBLY,UPPER 3721A20135A 3721A20135B 3721A20135B R
147901 BARRIER,INDOOR 4790A20043A 4790A20043B 4790A20043B R
152302 FILTER(MECH),A/C 5230A30009A 5230A30009B 5230A30009B R
158591 PUMP ASSEMBLY,WATER 5859A20002B 5859A20002B 5859A20002B R
249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20297A 4995A20297B 4995A20297C R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323A30004E 6323A30004E 6323A30004E R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323A30002A 6323A30002A 6323A30002A R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226T 6323AQ3226T 6323AQ3226T R
267110 REMOTE CONTROLLER ASSEMBLY 6711A10002D 6711A10002D 6711A10002D R
268714 PWB(PCB) ASSEMBLY,MAIN 6871A10108A 6871A10108B 6871A10108C R
330870 DRAIN PAN ASSEMBLY 3087A20019A 3087A20019B 3087A20019B R
336610 HOUSING ASSEMBLY (MECH) 3661A20022A 3661A20023A 3661A20023A R
346810 MOTOR ASSEMBLY,INDOOR 4681A20100A 4681A20100B 4681A20100C R
354210 EVAPORATOR ASSEMBLY,FIRST 5421A20147A 5421A20147B 5421A20147B R
359012 FAN ASSEMBLY,BLOWER 5901A20027A 5901A20027B 5901A20027B R
437214 PANEL ASSEMBLY,BASE 3721A20137A 3721A20137B 3721A20137B R
56 Indoor Unit
Convertible
Indoor Unit
CRNN-VB
Convertible Type
1. Specification ...............................................................................58
2. Installstion...................................................................................59
4. Display Function .............................................................................66
6. Piping Diagrams .........................................................................68
7. Wiring Diagrams .........................................................................69
8. Disassembly of the parts ................................................................70
9. Exploded View ..................................................................................74
10. Replacement Parts List............................................................75
Service Manual 57
Specifications
1. Specifications
Model Unit CRNN186VBA0 CRNN246VBA0
W 5,300 7,032
Cooling Capacity kcal/h 4,557 6,048
Btu/h 18,084 24,600
W 5,963 7,735
Heating Capacity kcal/h 5,127 6,653
Btu/h 20,345 26,400
Color White
mm 1200*615*205
Dimensions (W*H*D)
inch 47.24*24.21*8.07
Casing Galvanized Steel plate + Painting
Coil Rows x Columns x FPI 2*12*18 2*12*18
Face Area m2 0.26 0.26
Moisture removal l/h. 2.5 3.0
Type Cross Flow Fan
Motor Output x Number W 30 30
Fan Air Flow Rate(High) cmm 13.5 16
cfm 477 565
Drive Direct
Liquid Side mm(inch) 9.52 (3/8)
Pipe Connections Gas Side mm(inch) 15.88 (5/8)
Drain Pipe(Internal Dia.) mm 17
Net Weight kg(lbs) 30(66.1)
Noise Level (Sound Press,1.5m, H/M/L) dBA±3 43 / 40 / 37 45/42/39
Power Supply Ø,V,Hz 1,220~240,50
Power Cable AWG#:P*mm2 12:3*2.5
Refrigerant Control L.E.V
Hose, Clamp Metal, Insulation for Fitting, Clamps, Washers, Flare Nut.

58 Indoor Unit
Installstion
Convertible
Indoor Unit
2. Installstion
Indoor Unit
Sensing the Room Temperature

Room temperature sensor. (Thermistor)
Room temperature control
Maintains the room temperature in accordance with the Setting Temperature.
Starting Current Control
Indoor fan is delayed for 5 seconds at the starting.
Time Delay Safety Control

Restarting is inhibited for approx. 3 minutes.
Indoor Fan Speed Control
High, Med, Low, Chaos
Operation indication Lamps (LED)

--- Lights up in operation
--- Lights up in Sleep Mode
--- Lights up in Timer Mode
--- Lights up in Deice Mode or Hot Start Mode
Soft Dry Operation Mode
Intermittent operation of fan at low speed.
Sleep Mode Auto Control
The fan is switched to low(Cooling), med(Heating) speed.

The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
Natural Air Control by CHAOS Logic
The fan is switched to intermittent or irregular operation

The fan speed is automatically switched from high to low speed. Deice (defrost) control (Heating)
Airflow Direction Control

Both the indoor and outdoor fan
The louver can be set at the desired position or swing
stops during deicing.
up and down, right and left automatically.
Hot start after deice ends.
Auto Operation
The setting temperature, indoor fan speed and desired
operation made are automatically set by fuzzy rule. The indoor fan does not rotate until
the evaporator piping temperature
will be reached at 22°C.
Service Manual 59
Operation Details
• 3min… The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.
(Protection of compressor)
• 5sec… Vertical air flow direction control louvers open in 5 seconds to prevent noise between louvers and wind.
• 30sec… The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating oper-
ation is OFF or switched to the other operation mode while compress is off.
■ Airflow Direction Control

• This function is to swing the louver up and down automatically and to set it at the desired position.
• The procedure is as the following.
1st ; Press the ON/OFF Button to operate the product.

2nd ; Press the Airflow Direction Control Button to swing the louver up and down automatically.
3nd ; Repress the Airflow Direction Control Button to set the louver as the desired position.
MODE 0
MODE1
135°
MODE 2
MODE 3 Cooling
MODE 4
MODE 5 MODE 9
MODE 6 (CLOSE)
MODE 7
For Heating Model

• Airflow direction control figure when installed on the • Airflow direction control figure when installed under
floor. the ceiling.
OPEN OPEN
MODE 1 MODE 1
12° MODE 2 12°
MODE 2
Cooling Cooling
MODE 3 MODE 3
MODE 4 MODE 4 Heating
MODE 5 Heating MODE 5
135° 135°
MODE 6 MODE 6
MODE 7 MODE 7
MODE 8 MODE 8
MODE 9 MODE 9
CLOSE CLOSE
60 Indoor Unit
Operation Details
Convertible
Indoor Unit
When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote
controller and the operation diagram is as following
COMP. ON
COMP. OFF
3 minutes 3 minutes
Selecting Selecting Selecting
INDOOR FAN Low Low
■ Cooling or Heating Mode with Sleep Mode Auto Operation

• When selecting the Cooling( ) or the Heating( ) combined with the Sleep Mode Auto Operation( ), the
operation diagram is as following.
Cooling Mode with the Sleep Mode
• The setting temperature will be raised by 1°C 30minutes later and by 2°C 1 hour later.
• The operation will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
Intake Air Temperature 30 minutes 30 minutes
1°C
COMP. ON 1°C
COMP. OFF
3 minutes 3 minutes
INDOOR FAN Low Low Low Low Low

Heating Mode with the Sleep Mode.

The operation will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

(Compressor OFF)
Setting Temperature
(Compressor ON)
Indoor Fan Med. Med. Med. Med. Med. Med.

Compressor ON OFF ON OFF ON OFF
Service Manual 61
Operation Details
■ Natural wind by CHAOS logic

For more fresh feeling than other fan speed mode, press
the indoor fan Speed Selector and set to CHAOS mode.
In this mode, the wind blows like natural breeze by auto-
matically changing fan speed according to the CHAOS
logic.
Intake Air temperature Setting CHAOS Natural wind
Cooling on temperature.
(Setting temperature +0.5)
Setting temp.
Cooling off temperature

(Setting temperature -0.5)
INDOOR FAN
OUTDOOR FAN/COMP.
: Setting fan speed : CHAOS Natural wind : LOW : COMP ON : COMP OFF
GRAPH of Natural wind by the CHAOS logic (During Cooling operation)
Intake Air temperature Setting CHAOS Natural wind
Heating off temperature

(Setting temperature +3.0)
Heating on temperature
(Setting temperature) 30sec
INDOOR FAN LOW OR STOP
OUTDOOR FAN/COMP.
: Setting fan speed : CHAOS Natural wind : LOW : COMP ON : COMP OFF
GRAPH of Natural wind by the CHAOS logic (During Heating operation)
62 Indoor Unit
Operation Details
Convertible
Indoor Unit
The unit will operate according to the setting by the remote controller and the operation diagram is shown
as following.
• For Heating Model
Indoor piping temperature
28°C
26°C
Intake Air temperature
Setting temperature +3.0˚C

(Compressor OFF)
Setting temperature
(Compressor ON) minimum
30sec.
minimum minimum minimum minimum
1min. 3min. 3min. 1min.
OUTDOOR FAN ON OFF ON OFF ON

Fan Low Selected Low Fan Selected Fan Low Fan Fan Stop Low Selected
INDOOR FAN Stops Fan Fan Fan Fan
4-WAY VALVE ON
The indoor fan does not rotate until the evaporator piping temperature will be reached to 22 .
During heating operation, if piping temperature falls below 28°C fan stops.
The operation diagram is as following.
PIPING 1min
TEMPERATURE
28°C
26°C
INDOOR FAN
COMPRESSOR ON
Service Manual 63
Operation Details
■ Soft Dry Operation

• During Soft Dry Operation, the compressor ON temperature is the setting temperature plus 1°C, the compressor
OFF temperature is the setting temperature minus 0.5°C.
• When the room temperature rises over the compressor ON temperature, the operation mode is switched to
the cooling mode.
• When the room temperature falls between the compressor ON temperature and OFF temperature, the opera-
tion mode is switched to the Soft Dry Operation.
In this temperature range, 10min. Dry Operation, 7min operation OFF. During 10min Dry operation, if the room
temperature falls below compressor OFF temperature, Compressor OFF.
• In dehumidify mode, control of fan speed is as following.
Intake Air temperature
Setting temperature +1.0˚C

(Compressor ON)
Setting temperature
Setting temperature -0.5˚C

(Compressor OFF)
Cooling 2min.58sec. 10min. 7min. 10min. Within 7min. Cooling 2min.58sec.
COMPRESSOR ON OFF ON OFF ON OFF ON OFF ON OFF

OUTDOOR FAN ON OFF ON OFF ON OFF ON OFF ON OFF
Selected Selected
INDOOR FAN Fan Low Fan Fan Low Fan
■ Forced operation
• If you lose wireless remote controller, you can operate the unit with forced operation switch.
• The standard conditions are as following.
Room Temperature 24°C 21°C Room Temperature 24°C Room Temperature 21°C
Operation Mode Cooling Soft Dry Heating
FAN Speed High Soft Dry Rule High
Setting Temperature 22°C Air Intake Temperature 24°C
• Unit operates in low fan mode for first 15 seconds, then switched to proper operation mode according to
intake Air temperature.
Forced
Operation Button Press the Forced Operation Button.
• Press the Forced Operation Button once

again to stop operation.
64 Indoor Unit
Operation Details
Convertible
Indoor Unit
■ Protection of the evaporator pipe from frosting
If the temperature of the indoor coil is below -2°C after 7 minutes from starting the compressor,
the compressor and the outdoor fan is stopped, and then after 3 minute delay of the compressor
and the temperature of the indoor coil is over 7°C, the compressor and the outdoor fan is reoper-
ated.
Indoor fan operates at low speed (comp. OFF) or at selected speed (comp. ON)
■ Inlet grille open
Once the inlet grille is opened during operation of the unit, the unit automatically stops operation and the lamps
will be turned-off. But memorized functions are still available.
When the inlet grille is closed again, the unit become waiting state for operation. From then, the unit can be
operated by forced operation button or Start/Stop button of remote controller.
■ Test Operation
• When pressing forced operation switch about 3 seconds, the unit operates in cooling mode at high speed
fan regardless of room temperature and resets in 18 min.
• During test operation, if remote controller signal is received, the unit operates as remote controller sets.
■ Auto Restarting Operation

• When the power is restored after a sudden power failure while in appliance is in operation, the mode
before the power failure is kept on the memory and the appliance should operate automatically in the
mode kept in the memory.
• Operation Mode that is kept on the memory
- State of Operation ON/OFF
- Operation Mode/Setting Temperature /Selected airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer(unit of hour)
• If no input by the remote controller or no switching of the slide switch within 7 hours after the appliance
operates by the Auto Restarting operation, the appliance is forced to stop at the moment of 7 hours
elapse.
Service Manual 65
Display Function
4. Display Function
Operation Indicator
• Coolling, Soft Dry, Fan, Heating
Timer Indicator
• Timer Mode
Sleep Timer Indicator
• Sleep Mode
Deice Indicator
• Hot-start, Deice
Note)
For normal operation after checking by test mode, you should press SW1 nine times for resetting or recon-
nect the power cord.
66 Indoor Unit
Convertible
Indoor Unit
1200 61
5
205
63
38
39 250
26 2
5
36
46
8
175
76
10
(Installation Plate)
(Rear Side)
36
(Unit: mm)
More than
20cm
More than
20cm
R R More than
More than 20cm
20cm
More than eye-level
(Ceiling installation) (Floor/Wall installation)
Service Manual 67
Piping Diagrams
6. Piping Diagrams
:Cooling
Filter
C.F.F. Filter
lndoor unit
: Thermistor

[unit: mm(inch)]
Model Gas Liquid
CRNN186VBA0
15.88(5/8) 9.52(3/8)
CRNN246VBA0
68 Indoor Unit
Wiring Diagrams
Convertible
Indoor Unit
7. Wiring Diagrams
1(L) 2(N) 3 4
(Transmission)
CONNECTOR
CN-DOOR DOOR SENSE WHITE SENSING DOOR STATUS(OPEN/CLOSE)
Service Manual 69
Disassembly of the parts
8. Disassembly of the parts

Warning :
Disconnect the unit from power supply before making
any checks.
Be sure the power switch is set to “OFF”.
1. Remove the air filter.

• Pull the inlet grille slightly toward you.
• Pull out the air filter. (2 pieces) R
Inlet Grille
2. Remove the girlle from chassis

• Remove the screws securing the side plate and
push to the bottom-side.
• Unhook the hanger from the hanger screw at the
left and the right side.
• Pick out the inlet grille.
R
4 3
Hanger
Hanger
Screw 2
3. Remove the lower air guide

• Remove a screw of both side fixing "barrier air-
guide".
• Remove the screws of both sides of the lower
air-guide.
• Remove the lower air-guide toward “arrow
mark” by turning upwards as shown in figure. R
Barrier Air guide
Lower Air guide
70 Indoor Unit
Convertible
Indoor Unit
4. Remove air guide upper, crossflow fan and
motor.
• Remove the screws of both sides and center
securing the upper air-guide.
• Remove 2 screws fastening the bracket of door
switch. Door
Switch
R
• Remove a bearing assembly by removing a

screw and the bearing cover.
• Remove 4 screws securing the motor cover.
• Loosen the screw securing the crossflow fan to
the fan motor shaft. (do not remove)
• Remove the crossflow fan by sliding it out from Bearing Bearing
Cover
the shaft of fan motor.
Motor R
Cover
5. Remove the control box Assembly.

• Disconnect the step motor connector, fan
motor connector, display PCB connector,
thermistor connector and door switch con-
nector from the main PCB.
• If necessary, disconnect power supply cord
and connecting cable from the terminal block R
and remove the cord clamp screw.

• Remove 2 screws securing the control box
and pick out the control box carefully.
Service Manual 71
6. Remove the front panel.

Diffuser frame
• Remove the screws of both sides fixing the
Diffuser
front panel. frame
• Push the upper side of front panel strongly to
pull out the front panel from the inner hook of Hook
diffuser frame. Front
• Pull down the front panel carefully not so as Panel
Front
to harm the display PCB wires and thermistor Panel
wires. R
7. Remove the diffuser assembly.

• Remove the screws of both side of diffuser
assembly. (4 pieces) Diffuser
• Push the upper side of cabinet strongly to frame
pull out the inner hook of diffuser frame from Hook
the cabinet hole. Cabinet
• Take up the diffuser frame carefully not so as
to harm the display PCB wires and the step
motor wires.
8. Remove display PCB assembly.

• Remove the screws at the both side of dis-
play cover.
• If necessary, disconnect the display PCB
connector from PCB assembly.
• Remove 2 screws of PCB assembly.
Display Cover
72 Indoor Unit
Convertible
Indoor Unit
9. Remove the vane-upper, vane-lower and step
motor.
Step Motor
• Remove 2 screws securing the step motor
assembly and pull it out from the vanes care- Vane Supporter
fully.
• Unhook the vanes from the vane supporter
and remove the upper vane and lower vane
by pulling the center of vanes with care.
Lower Vane Upper Vane
10. Remove the drain pan assembly.

• Remove the both side of screws. (4 pieces)
• Pull out the drain pan assembly.
• Be careful not to harm to the EPS packing of
drain pan and the tubings of evaporator.
11. Remove the evaporator. EVA. Barrier-L

• Remove the screws of both sides securing
the EVA barrier-R/L on the side cabinet.
• Remove the screws which fasten the barrier
on the evaporator and take out the barrier
assembly.
• Remove the evaporator assembly by sliding
toward arrow mark. (As shown in figure) Side Cabinet
EVA. Barrier-R
Service Manual 73
74
135316 733010-1
146811
159911 132100
Exploded View
130911
Indoor Unit
346810
159901 166000 733010-2
235450
237900 268712 W0CZZ

9. Exploded View
268714
249951
352115
137211 354210 166000
35211A
263230-1
263230-2
263230-3
SER
VIC
EM
ANU
AL
330870
359010
OW
NER
'S M
ANU
AL
152302
INST
ALLA
TION
MAN
UAL
135414
342800
Convertible
Indoor Unit
PART NO.
LOCATION No. DESCRIPTION REMARKS
CRNN186VBA0 CRNN246VBA0
130911 CABINET ASSEMBLY,INDOOR 3091AP2533A R
132100 FRAME 3022AP1283B R
135303 GRILLE,INLET 5236AP1236A R
135314 GRILLE ASSEMBLY,INLET SUB 5237AP2817B R
135316 GRILLE ASSEMBLY,DIFFUSER(INDOOR) 3531A10272B R
137211 PANEL ASSEMBLY,FRONT(INDOOR) 3720AP2767P R
146811 MOTOR ASSEMBLY,STEP 4681AR2727G R
152302 FILTER(MECH),A/C 5230AP7093A R
159901 VANE ASSY 5991AP7334C R
159911 VANE ASSY,HORIZONTAL 5991AP2867B R
166000 SWITCH,PUSH 6600AP2059B R
166000 SWITCH,PUSH 6600AP2059B R
235450 DISPLAY ASSEMBLY (MECH) 3545AP7224B R
237900 WINDOW,DISPLAY 3790AP7080A R
249951 CONTROL BOX ASSEMBLY,INDOOR 4995A10107A 4995A10107D R
263230-1 THERMISTOR ASSEMBLY(ROOM) 6323AQ3214E R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323A30002C R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226Y R
268712 PWB(PCB) ASSY,DISPLAY 6871AQ3263A R
268714 PWB(PCB) ASSEMBLY,MAIN 6871A10089M 6871A10089R R
330870 DRAIN PAN ASSEMBLY 3087AP7233A R
342800 BEARING 3H02821B R
346810 MOTOR ASSEMBLY,INDOOR 4681AP2306M 4681AP2306N R
35211A TUBE ASSEMBLY,SUCTION INDOOR 5211AP2813E 5211AP2813J R
352150 HOSE ASSY,DRAIN 5251AP2460B R
354210 EVAPORATOR ASSEMBLY,FIRST 5421AP2812B 5421AP2812A R
359010 FAN ASSY,CROSS FLOW 5901AR2351E R
733010 PLATE ASSEMBLY,INSTALL(R) 3301AP7519A R
733010 PLATE ASSEMBLY,INSTALL(L) 3301AP7519B R
W0CZZ CAPACITOR, DRAWING 3H00671A R
Service Manual 75
CRNN-SR / CRNN-ST
Wall Mounted Type
1. Specification ...............................................................................77
2. Functions ....................................................................................78
5. Piping Diagrams .........................................................................85
6. Wiring Diagrams .........................................................................86
7. Disassembly of the parts.................................................................87
8. Exploded View ............................................................................89
76 Indoor Unit
Specifications
1. Specifications
Model Unit CRNN076SRA0 CRNN096SRA0 CRNN126SRA0 CRNN186STA0
W 2,100 2,600 3,500 5,300
Cooling Capacity kcal/h 1,806 2,235 3,009 4,557
Wall Mounted
Btu/h 7,165 8,871 11,942 18,084
Indoor Unit
W 2,363 2,925 3,938 5,963
Heating Capacity kcal/h 2,031 2,515 3,385 5,127
Btu/h 8,061 9,980 13,435 20,345
mm 900*285*156 900*285*156 900*285*156 1090*314*172
Dimensions (W*H*D)
inch 35.4*11.2*6.1 35.4*11.2*6.1 35.4*11.2*6.1 42.9*12.4*6.8
Color White White White White
Coil Rows x Columns x FPI 2*12*20 2*12*20 2*12*20 2*13*20
Face Area m2 0.13 0.13 0.13 0.14
Moisture removal l/h. 1.0 1.0 1.2 2.2
Type Cross Flow Fan Cross Flow Fan Cross Flow Fan Cross Flow Fan
Motor Output x Number W 7.5 7.5 14.4 22
Fan
Air Flow Rate(High) cmm 5.6 7.0 9.5 13.5
cfm 196 247 336 477
Drive Direct
Air Filter Resin Net(Washable)
Safety Device Fuse Fuse Fuse Fuse
Liquid Side mm(inch) 6.35 (1/4) 6.35 (1/4) 6.35 (1/4) 9.52(3/8)
Pipe Connections Gas Side mm(inch) 12.7 (1/2) 12.7 (1/2) 12.7 (1/2) 15.88 (5/8)
Drain Pipe(Internal Dia.) mm 25 25 25 25
Net Weight kg(lbs) 7(15.4) 7(15.4) 8(17.6) 12(26.5)
Noise Level (Sound Press,1m, H/M/L) dBA±3 30/33/27 34/31/28 36/33/30 40/37/34
Power Supply Ø,V,Hz 1,220~240,50 1,220~240,50 1,220~240,50 1,220~240,50
Power Cable AWG#:P*mm2 12:3*2.5 12:3*2.5 12:3*2.5 12:3*2.5
Refrigerant Control L.E.V L.E.V L.E.V L.E.V
Operation Manual, Installation Manual, Installation Panel, Paper Pattern for
Installation, Clamps, Screws
Conversion Formula
Notes:-
1. Capacities are based on the following conditions: kcal/h = kW x 860
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB z Btu/h = kW x 3414
- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB cfm = m3/min x 35.3
Service Manual 77
Functions
2. Functions
Indoor Unit
• Room temperature sensor. (THERMISTOR)

• Maintains the room temperature in accordance with the Setting temperature

• Indoor fan is delayed for 5 seconds at the starting.
• Restarting is inhibited for approx. 3 minutes.
• High, Med, Low, Chaos

--- Lights up in operation

--- Lights up in Sleep Mode
--- Lights up in Timer Mode
--- Lights up in Deice Mode

--- Indicate the setting temperature.
Auto Restart
Health Dehumidification Operation
• Although the air conditioner is
• Intermittent operation of fan at low speed. turned off by a power failure, it
is restarted automatically to
Sleep Mode Auto Control previous operation mode after
• The fan is switched to low(Cooling), med(Heating) speed. power suply.
• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
Deice (defrost) control (Heating)
Natural Air Control by CHAOS Logic • Both the indoor and outdoor fan
stops during deicing.
• The fan is switched to intermittent or irregular operation
• Hot start after deice ends.
• The fan speed is automatically switched from high to low speed.
Airflow Direction Control
• The indoor fan does not rotate
• The louver can be set at the desired position or swing until the evaporator piping tem-
up and down automatically. perature will be reached at 28°C.
78 Indoor Unit
Operation Details
• DISPLAY
Wall Mounted
Indoor Unit
Operation Indicator
• On while in appliance operation, off while in appliance pause

• On while in sleep timer mode, off when sleep timer cancel or appliance operation pause
Timer Indicator
• On while in timer mode (on/off), off when timer mode is completed or canceled
Defrost Indicator
• Off except when hot start during heating mode operation or while in defrost control

• When the intake air temperature reaches 0.5°C below the setting temperature, the compressor and the out-
door fan stop.
• When it reaches 0.5°C above the setting temperature, they start to operate again.
Compressor ON Temperature ➲ Setting Temperature +0.5°C
Compressor OFF Temperature ➲ Setting Temperature -0.5°C
• While in compressor running, operating with the airflow speed set by the remote control. While in compres-
sor not running, operating with the low airflow speed regardless of the setting.
■ Soft Dry Operation Mode

• When the dehumidification operation input by the remote control is received, the intake air temperature is
detected and the setting temperature is automatically set according to the intake air temperature.
26°C ≤ Intake Air Temperature ➲ 25°C
24°C ≤ Intake Intake Air Temperature <26°C ➲ Intake Air Temperature -1°C
18°C ≤ Intake Intake Air Temperature <24°C ➲ Intake Air Temperature -0.5°C
Intake Air Temperature <18°C ➲ 18°C
• While in compressor off, the indoor fan repeats low airflow speed and pause.
• While the intake air temperature is between compressor on temperature and compressor off temperature,
10-min dehumidification operation and 4-min compressor off repeat.
Compressor ON temperature ➲ Setting Temperature +0.5°C
Compressor OFF temperature ➲ Setting Temperature -0.5°C
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.

• When the intake air temperature reaches +3°C above the setting temperature, the compressor is turned
off. When below the setting temperature, the compressor is turned on.
Compressor ON temperature ➲ Setting temperature
Compressor OFF temperature ➲ Setting temperature+3°C
• While in compressor on, the indoor fan is off when the indoor pipe temperature is below 26°C, when above
28°C , it operates with the low or setting airflow speed.
Service Manual 79
Operation Details
• While in compressor off, the indoor fan is off when the indoor pipe temperature is below 33°C, when above
35°C , it operates with the low airflow speed.
• If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the
outdoor fan is turned on/off according to the indoor pipe temperature
• While in defrost control, both of the indoor and outdoor fans are turned off.
■ Fuzzy Operation
• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed
since the operation off, the operation mode is selected.
• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and
only the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake
air temperature at that moment as follows.
24°C ≤ Inatake Air Temperature ➲ Fuzzy Operation for Cooling
21°C ≤ Inatake Air Temperature <24°C ➲ Fuzzy Operation for Dehumidification
Inatake Air Temperature <21°C ➲ Fuzzy Operation for Heating
• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for
10 sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1) Fuzzy Operation for Cooling

• According to the setting temperature selected by Fuzzy rule, when the intake air temperature is 0.5°C or
more below the setting temperature, the compressor is turned off. When 0.5°C or more above the setting
temperature, the compressor is turned on.
Compressor OFF Temperature ➲ Setting Temperature – 0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to
the intake air temperature at that time.
26°C≤ Intake Air Temperature ➲ 25°C
24°C≤ Intake Air Temperature <26°C ➲ Intake Air Temperature – 1°C
22°C≤ Intake Air Temperature <24°C ➲ Intake Air Temperature – 0.5°C
18°C≤ Intake Air Temperature <22°C ➲ Intake Air Temperature
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the tem-
perature.
80 Indoor Unit
Operation Details
2) Fuzzy Operation for Dehumidification

Compressor ON Temperature ➲ Setting Temperature + 0.5°C
Compressor OFF Temperature ➲ Setting Temperature – 0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
Wall Mounted
Indoor Unit
intake air temperature at that time.
24°C ≤ Intake Air Temperature <26°C ➲ Intake Air Temperature – 1°C
22°C ≤ Intake Air Temperature <24°C ➲ Intake Air Temperature – 0.5°C
18°C ≤ Intake Air Temperature <22°C ➲ Intake Air Temperature
• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in
dehumidification operation.
3) Fuzzy Operation for Heating

• According to the setting temperature selected by Fuzzy rule, when the intake air temperature is 3°C or more
above the setting temperature, the compressor is turned off. When below the setting temperature, the com-
pressor is turned on.
Compressor ON Temperature ➲ Setting Temperature
Compressor OFF Temperature ➲ Setting Temperature + 3°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temperature at that time.
20°C≤Intake Air Temperature ➲ Intake Air Temperature + 0.5°C
• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to
the intake air temperature and the setting temperature.
■ Airflow Speed Selection

• The airflow speed of the indoor fan is set to high, medium, low, or chaos (auto) by the input of the airflow
speed selection key on the remote control.
■ On-Timer Operation
• When the set time is reached after the time is input by the remote control, the appliance starts to operate.
• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
• If the appliance is operating at the time set by the timer, the operation continues.
While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
■ Off-Timer Operation
• When the set time is reached after the time is input by the remote control, the appliance stops operating.
• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
• If the appliance is on pause at the time set by the timer, the pause continues.
Service Manual 81
Operation Details
■ Off-Timer <=> On-Timer Operation

• When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation is
carried out according to the set time.
■ Sleep Timer Operation

• When the sleep time is reached after < 1,2,3,4,5,6,7,0(cancel) hour > is input by the remote control while in
appliance operation, the operation of the appliance stops.
• While the appliance is on pause, the sleep timer mode cannot be input.
• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature
increases by 1°C. After another 30 min elapse, it increases by 1°C again.
• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to
the low.
• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to
the medium.
■ Chaos Swing Mode

• By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they
are fixed to the desired direction.
• While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.
■ Chaos Natural Wind Mode

• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the
airflow mode is operated for 2~15 sec. randomly by the Chaos Simulation.
■ Jet Cool Mode Operation

• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the
other mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C.
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
■ Auto restart
• In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.
82 Indoor Unit
Operation Details
■ Forced Operation
• Operation procedures when the remote control can't be used.
• The operation will be started if the power button is pressed.
• If you want to stop operation, re-press the button.
Room temperature ≥ 24°C 21°C ≤ Room temperature < 24°C Room temperature < 21°C
Wall Mounted
Operating mode Cooling Healthy Dehumidification Heating
Indoor Unit
Indoor FAN Speed High High High
Setting Temperature 22°C 23°C 24°C
• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times
to indicate the forced operation.
■ Test operation
• During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room
temperature and resets in 18±1 minutes.
If you want to use this operation, open the front panel upward and Press the power button let it be pressed
for about 3 seconds.
• If you want to stop the operation, re-press the button.

• If the indoor pipe temperature is below 0°C in 7 min. after the compressor operates without any pause while
in cooling cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the
indoor evaporator pipe from frosting.
• When the indoor pipe temperature is 7°C and higher after 3 min. pause of the compressor, the compressor
and the outdoor fan is turned on according to the condition of the room temperature.
■ Buzzer Sounding Operation

• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.
• When the appliance-pause key is input by the remote control, the long "beep—" sounds.
Service Manual 83
Dimiensional Drawings
4. Dimiensional Drawings
D
W
Installation plate
(Unit : mm)
Model No. W H D
CRNN076SRA0
CRNN096SRA0 900 285 156
CRNN126SRA0
CRNN186STA0 1090 314 172
84 Indoor Unit
Piping Diagrams
5. Piping Diagrams
:Cooling
Filter
Wall Mounted
Indoor Unit
C.F.F Filter
lndoor unit
: Thermistor

[unit: mm(inch)]
Model Gas Liquid
CRNN076SRA0
CRNN096SRA0 12.7(1/2) 6.35(1/4)
CRNN126SRA0
CRNN186STA0 15.88(5/8) 9.52(3/8)
Service Manual 85
Wiring Diagrams
6. Wiring Diagrams
(Transmission)
CONNECTOR
CN-ACDC AC/DC CONNECTION WHITE CONNECTION BETWEEN AC PCB AND DC PCB
CN-DISP1 DISPLAY BLUE DISPLAY OF INDOOR STATUS
CN-UD STEP MOTOR WHITE STEP MOTOR OUTPUT
CN-TH1 ROOM/PIPE SENSOR WHITE ROOM & PIPE THERMISTOR
CN-PIPEOUT DISCHARGE PIPE SENSOR RED DISCHARGE PIPE THERMISTOR
86 Indoor Unit

Warning :
Disconnect the unit from power supply before mak-
ing any checks.
Wall Mounted
Indoor Unit
To remove the Grille from the Chassis.
• Set the up-and-down air discharge louver to open
position (horizontally) by finger pressure.
• Remove the securing screws
• To remove the Grille, pull the lower left and right
side of the grille toward you (slightly tilted) and lift
it straight upward.
Screw
1. To remove the sensor, housing connect, earth

connector & step motor connector with sen-
sor holder, Motor, Evaporator & P.C.B.
Motor
Connector
LEV
Connector
Earth
Conductor
Display
Connector
Sensor
Conductor
Service Manual 87
2. To remove the Control Box.

• Remove securing screws.
• Pull the control box out from the chassis
carefully.
3. To remove the Discharge Grille.

• Pull the discharge grille out from the chas-
sis carefully.
4. To remove the Evaporator.

• Remove screws securing the evaporator
and the holder eva.
• Unhook the tab on the right inside of the

chassis at the same time, slightly pull the
evaporator toward you until the tab is clear
of the slot.
5. To remove the Cross-Flow Fan

• Loosen the screw securing the cross-flow
fan to the fan motor (do not remove).
• Lift up the right side of the cross-flow fan
and the fan motor, separate the fan motor
from the cross-flow fan.
• Remove the left end of the cross-flow fan

from the self-aligning bearing.
88 Indoor Unit
131410 733010
342800
359011
268712
354210
267110
135311
8. Exploded View
352115
135312 352116
35211B
346810
135314
• CRNN076SRA0, CRNN096SRA0, CRNN126SRA0
352150 268715
W0CZZ
159901 146811
263230-2
249951
135516 268716 263230-1

152302
Exploded View
Service Manual 89
Wall Mounted
Indoor Unit
90
131410 733010
342800
359011
Exploded View
268712
• CRNN186STA0
Indoor Unit
354210
267110 135311
159901-1 352111
352115
135312 352116
35211B
346810
135314
352150
268715
W0CZZ
159901-2 146811
263230-1
249951
135516 268716 263230-2

135302

Location Part No.
Description Remarks
No. CRNN076SRA0 CRNN096SRA0 CRNN126SRA0
131410 CHASSIS ASSEMBLY 3141A20005E R
135311 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A10192E R
Wall Mounted
Indoor Unit
135312 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A10118W R
135516 COVER ASSEMBLY,MOTOR 3551A20050A R
146811 MOTOR ASSEMBLY,STEP 4681A20055A R
152302 FILTER(MECH),A/C 5230A20014A R
159901 VANE,HORIZONTAL 5990A20007A R
249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20274A 4995A20274B 4995A20274C R
263230-1 THERMISTOR ASSEMBLY(ROOM, PIPE-IN) 6323A20004M R
263230-2 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226Z R
268712 PWB(PCB) ASSEMBLY,DISPLAY 6871A20227J R
268715 PWB(PCB) ASSEMBLY,MAIN(AC) 6871A20274A R
268716 PWB(PCB) ASSEMBLY,MAIN(DC) 6871A20275A 6871A20275B 6871A20275C R
342800 BEARING 4280A20004A R
35211B TUBE ASSEMBLY,TUBING 5211A10324A R
352150 HOSE ASSEMBLY,DRAIN 5251AR2575F R
354210 EVAPORATOR ASSEMBLY,FIRST 5421A20086A R
733010 PLATE 1H00843A R
W0CZZ CAPACITOR,DRAWING 3H01487A R
346810 MOTOR ASSEMBLY,INDOOR 4681A20048L R
267110 REMOTE CONTROLLER ASSEMBLY 6711A20010B R
135314 GRILLE ASSEMBLY,INLET SUB 3531A10117U R
352116 TUBE ASSEMBLY,EVAPORATOR OUT 5211A20911A R
359011 FAN ASSEMBLY,CROSS FLOW 5901A20007A R
Location Part No.

Description Remarks
No. CRNN186STA0
131410 CHASSIS ASSEMBLY 3141A10002A R
135311 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A10231Y R
135314 GRILLE ASSEMBLY,INLET SUB 3531A20107L R
135312 GRILLE ASSEMBLY,FRONT(INDOOR) 3531A20207H R
135516 COVER ASSEMBLY,MOTOR 3551A20099C R
152302 FILTER(MECH),A/C 5230A20001A R
159901-1 VANE,HORIZONTAL 5990A20008A R
159901-2 VANE,HORIZONTAL 5990A20009A R
249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20274R R
263230-1 THERMISTOR ASSEMBLY(ROOM, PIPE-IN) 6323A20004M R
263230-2 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226Z R
267110 REMOTE CONTROLLER ASSEMBLY 6711A20010B R
268712 PWB(PCB) ASSEMBLY,DISPLAY 6871A20227M R
268715 PWB(PCB) ASSEMBLY,MAIN(AC) 6871A20274A R
268716 PWB(PCB) ASSEMBLY,MAIN(DC) 6871A20275D R
342800 BEARING 4280A20004A R
346810 MOTOR ASSEMBLY,INDOOR 4681A20003D R
352116 TUBE ASSEMBLY,EVAPORATOR OUT 5211A30057D R
35211B TUBE ASSEMBLY,TUBING 5211A10324B R
352150 HOSE ASSEMBLY,DRAIN 5251AR2575F R
733010 PLATE ASSEMBLY,INSTALL 3301A10002A R
W0CZZ CAPACITOR,DRAWING 3H01487G R
354210 EVAPORATOR ASSEMBLY,FIRST 5421A20010D R
Service Manual 91
CRNN-SU
Art Cool Type(Mirror)
1. Specification ...............................................................................93
2. Functions ....................................................................................94
4. Display Function.......................................................................101
5. Dimensional Drawings .............................................................102
6. Piping Diagrams .......................................................................103
7. Wiring Diagrams .......................................................................104
8. Disassembly of the parts...............................................................105
9. Exploded View ..........................................................................108
10. Replacement Parts List..........................................................109
92 Indoor Unit
Specifications
1. Specifications
Model Unit CRNN076SU*0 CRNN096SU*0 CRNN126SU*0
W 2,100 2,600 3,500
Btu/h 7,165 8,871 11,942
W 2,363 2,925 3,938
Btu/h 8,061 9,980 13,435
mm 1,030*290*153 1,030*290*153 1,030*290*153
Dimensions (W*H*D)
inch 40.6*11.4*6.1 40.6*11.4*6.1 40.6*11.4*6.1
Face Area m2 0.13 0.13 0.13
Art Cool-Mirror
Indoor Unit
Type Cross Flow Fan Cross Flow Fan Cross Flow Fan
Motor Output x Number W 7.5 7.5 14.4
Fan
Air Flow Rate(High) cmm 5.6 7.0 9.5
cfm 196 247 336
Drive Direct
Air Filter Resin Net(Washable)
Safety Device Fuse Fuse Fuse
Net Weight kg(lbs) 8(18.5) 8(18.5) 9.5(20.9)
Noise Level (Sound Press,1m, H/M/L) dBA±3 30/33/27 34/31/28 36/33/30
Operation Manual, Installation Manual, Installation Panel, Paper Pattern
Standard Accessories for Installation, Clamps, Screws
Frant Panel Color
R: Mirror, G: Gold, B: Blue
("*"Position)
Notes:-
1. Capacities are based on the following conditions: Conversion Formula
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB z kcal/h = kW x 860
Service Manual 93
Functions
2. Functions
Indoor Unit

• Maintains the room temperature in accordance with the Setting Temp.

• Indoor fan is delayed for 5 sec at the starting.

• High, Med, Low, CHAOS, JET COOL

• Intermittent operation of fan at low speed.

• The fan is switched to low(Cooling), med(Heating) speed.
Natural Air Control by CHAOS Logic Defrost(Deice) control (Heating)
• The fan is switched to intermittent or irregular operation • Both the indoor and outdoor fan stops dur-
• The fan speed is automatically switched from high to low speed. ing defrosting.
Airflow Direction Control Hot-start Control (Heating)

• The louver can be set at the desired position or swing • The indoor fan does not rotate until the
up and down automatically. evaporator pipe temperature will be reached
at 28°C.
94 Indoor Unit
Operation Details
1. MAIN UNIT FUNCTION
• DISPLAY
Operation Indicator
• ON while in appliance operation, OFF while in appliance pause.
• Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on)

• ON while in sleep timer mode, OFF when sleep timer cancel or appliance operation pause.
Timer Indicator
• ON while in timer mode (on/off), OFF when timer mode is completed or canceled.
Art Cool-Mirror
Indoor Unit
Defrost Indicator
• OFF except when hot start during heating mode operation or while in defrost control.

• When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan
stop.
• When it reaches 0.5°C above the setting temp, they start to operate again.
Compressor ON Temp ➲ Setting Temp+0.5°C
Compressor OFF Temp ➲ Setting Temp-0.5°C
■ Healthy Dehumidification Mode

detected and the setting temp is automatically set according to the intake air temperature.
26°C ≤ Intake Air Temp ➲ 25°C
24°C ≤ Intake Intake Air Temp<26°C ➲ Intake Air Temp-1°C
18°C ≤ Intake Intake Air Temp<24°C ➲ Intake Air Temp-0.5°C
Intake Air Temp<18°C ➲ 18°C
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidifica-
tion operation and 4-min compressor off repeat.
Compressor ON Temp. ➲ Setting Temp+0.5°C
Compressor OFF Temp. ➲ Setting Temp-0.5°C
Service Manual 95
Operation Details

• When the intake air temp reaches +3°…above the setting temp, the compressor is turned off. When below
the setting temp, the compressor is turned on.
Compressor ON Temp. ➲ Setting Temp.
Compressor OFF Temp. ➲ Setting Temp.+3°C
• While in compressor on, the indoor fan is off when the indoor pipe temp. is below 20°C, when above 28°C
, it operates with the low or setting airflow speed. When the indoor pipe temp is between 20°C and 28°C, it
operates with Super-Low(while in sleep mode, with the medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C, when above 35°C ,
it operates with the low airflow speed.
outdoor fan is turned on/off according to the indoor pipe temp.
■ Defrost Control
• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing,
reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.
• After 40 min heating mode operation, at 4 min interval, whether to carry out defrost control or not and the
time of defrost control are determined according to the following conditions.
1) While in heating mode operation, the maximum of the indoor pipe temperature is measured and it is com-
pared with the present indoor pipe temperature to get the difference of the indoor pipe temperatures (=the
maximum temperature of indoor pipe ? the present temperature of indoor pipe), according to which,
whether to carry out defrost control or not is determined.
2) According to the need of defrost control shown above and the elapsed time of heating mode operation at
that moment, the defrost control time is determined.
3) When the determined time of defrost control is below 7 min, heating mode operation continues without car-
rying out defrost control. According to the procedure stated above, the determination is made again. When
the defrost control time is 7 min or longer, defrost control is then carried out.
• While in defrost control, the minimum temp of the indoor pipe is measured and it is compared with the pre-
sent temp of the indoor pipe to get the difference of the indoor pipe temperatures (=the present temperature
of the indoor pipe ? the minimum temperature of the indoor pipe). When the difference is 5°C or higher,
defrost control is completed and heating mode operation is carried out.
• While in defrost control, if the defrost time determined before the start of defrost control is completed,
defrost control stops and heating mode operation is carried out regardless of the above condition.
• When the indoor pipe temp is 42°C or above, defrost control is not carried out even if the condition is one of
the defrost conditions above.
• While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are
off.
96 Indoor Unit
Operation Details
■ Fuzzy Operation
air temp at that moment as follows.
24°C ≤ Inatake Air Temp ➲ Fuzzy Operation for Cooling
21°C ≤ Inatake Air Temp<24°C ➲ Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C ➲ Fuzzy Operation for Heating
Art Cool-Mirror
Indoor Unit
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more
below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the
compressor is turned on.
Compressor ON Temp ➲ Setting Temp +0.5°C
Compressor OFF Temp ➲ Setting Temp + 0.5°C
the intake air temp at that time.
26°C≤ Intake Air Temp ➲ 25°C
24°C≤ Intake Air Temp<26°C ➲ Intake Air Temp + 1°C
22°C≤ Intake Air Temp<24°C ➲ Intake Air Temp + 0.5°C
18°C≤ Intake Air Temp<22°C ➲ Intake Air Temp
perature.

Compressor ON Temp ➲ Setting Temp + 0.5°C
Compressor OFF Temp ➲ Setting Temp+0.5°C
24°C ≤ Intake Air Temp<26°C ➲ Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C ➲ Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C ➲ Intake Air Temp
Service Manual 97
Operation Details

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more above
the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.
Compressor ON Temp ➲ Setting Temp
Compressor OFF Temp ➲ Setting Temp + 3°C
20°C≤Intake Air Temp ➲ Intake Air Temp + 0.5°C

■ Off-Timer ↔ On-Timer Operation

• When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation
is carried out according to the set time.

• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in
the low.
the medium.
98 Indoor Unit
Operation Details

• By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they
are fixed to the desired direction.
< Cooling Mode > < Heating Mode >

CLOSED CLOSED
7° 7°
Art Cool-Mirror
Indoor Unit
OPEN OPEN
■ Chaos Natural Wind Mode

• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the
airflow mode is operated for 2~15 sec. randomly by the Chaos Simulation.

• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
Service Manual 99
Operation Details
■ Test operation
■ Auto restart
• In case the power comes on again after a power failure, Auto Restarting Operation is the function to oper-
ate procedures automatically to the previous operating conditions.
■ Air Cleaner Operation

• When an air cleaner function is selected during Air Conditioner operation
- Plasma air cleaner function will be operated while in any operation mode with selecting the function.
- The function is to be stopped while it is operating with selecting the function.
• When an air cleaner function is selected during operation off
- The function will be only operated.
• When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.B) is to
be stopped. When inlet grille of air conditioner is closed during plasma operation, High Voltage
Generator(H.V.B) will be operated again.
■ Remote Control Operation Mode
• When the remote control is selected by the slide switch on the main unit, the appliance operates according
to the input by the remote control.

• If the indoor pipe temp is below 0°C in 7 min. after the compressor operates without any pause while in
cooling cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the
• When the indoor pipe temp is 7°C or higher after 3 min. pause of the compressor, the compressor and the
outdoor fan is turned on according to the condition of the room temperature.
■ Auto Clean
• Open the door on the remote control. Press the Auto Clean Button.
Close the door on the remote control. Now each time that you press the start/stop button, the Air condition-
er operates clean function automatically.
■ Display Luminosity
• The Display Luminosity can be adjusted by using the remote control.
Press the start/stop button to start the unit. Open the door on the remote control, press the 2ndF button and,
press display luminosity button. Display will be dark. Press the button again to set bright display.

• When the appliance-operation key is input by the remote control, the short "beep" sounds.
• When an except operation and pause key is input by the remote control, the short "beep" sounds.
100 Indoor Unit

Display Function
4. Display Function
Signal Receptor
Each Icon turns on when the unit is operated, then the only Icon outline to be operated is bright.
Cooling Mode Lights up during Cooling operation. (Outline)
Auto Operation Mode Lights up during Auto operation. (Outline)
Art Cool-Mirror
Indoor Unit
Healthy Dehumidification
Lights up during Healthy Dehumidification operation. (Outline)
Mode
Heating Mode Lights up during Heating operation.

(Heat Pump model only) (Outline)
Defrost Mode Lights up during Defrost control or

Hot Start in Heating operation. (Outline)
Air circulation Mode Lights up during Air Circulation operation. (Outline)
Sleep Mode Lights up during Sleep Mode operation.
Timer Mode Lights up during Timer operation.
Auto Cleaning Mode Lights up during Auto Cleaning reservation.
Jet Cool Mode Lights up during Jet Cool Operation.
Fan Speed (Low) Lights up when Fan speed is low.
Fan Speed (Medium) Lights up when Fan speed is Medium.
Fan Speed (High) Lights up when Fan speed is High.
Fan Speed (Chaos) Lights up when Fan speed is Chaos.
Desire temperature For cooling,dehumidification,heating modes it display Desired temperature

indicator • Cooling : 18~30°C • AI : Auto Operation
• Dehumidification : 18~30°C • Po : Jet Cool
• Heating : 16~30°C • Lo : Test Mode
• C1 : Indoor pipe sensor error
Desire temperature Icon
Indoor temperature Icon
Service Manual 101

CRNN076SU*0
CRNN096SU*0
CRNN126SU*0 H
(unit: mm)
Installation plate
Model No. W H D
CRNN076SU*0
CRNN096SU*0 1030 290 153
CRNN126SU*0
102 Indoor Unit

Piping Diagrams
6. Piping Diagrams
:Cooling
Filter
C.F.F Filter
lndoor unit
Art Cool-Mirror
Indoor Unit
: Thermistor

[unit: mm(inch)]
Model Gas Liquid
CRNN076SU*0
CRNN096SU*0 12.7(1/2) 6.35(1/4)
CRNN126SU*0
Service Manual 103

Wiring Diagrams
7. Wiring Diagrams
CN-GND
MAIN PCB ASM THERMISTOR
CN-TH2
THERMISTOR
CN-TH1
CN-MOTOR
MOTOR
ZNR
CN-U/D
STEP
MOTOR
CN-POWER
CN-LR
STEP
MOTOR
CN-SUC
STEP
FUSE
CN-COMM
AC250V/T2A MOTOR
CN-LEV
LEV
CN-HVB CN-VFD
1(L) 2(N) 3 4
AIR DISPLAY
PURIFIER PCB ASM
POWER
INPUT TO OUTDOOR UNIT(Transmission)
CONNECTOR
CN-MOTOR2 BLDC FAN MOTOR OUTPUT WHITE MOTOR OUTPUT OF BLDC
CN-COM COMMUNICATION WHITE COMMUNICATION BETWEEN INDOOR AND OUTDOOR
CN-LR1 STEP MOTOR WHITE STEP MOTOR OUTPUT FOR LEFT/RIGHT
CN-UD STEP MOTOR BLUE STEP MOTOR OUTPUT
CN-TH2 DISCHARGE PIPE SENSOR RED DISCHARGE PIPE THERMISTOR
104 Indoor Unit


Warning :
any checks.
To remove the Grille from the Chassis.

• Hold up Inlet Grille Horizentally.
• To remove the Grille, pull the lower left and right
side of the grille toward you (slightly tilted) and lift it
Art Cool-Mirror
Indoor Unit
straight upward.
• To seperate connecter assembly and than to
remove Inlet Grille assembly.
1. Before removing the control box, be sure to

take out the wire screwed at the other end.
Service Manual 105


• Remove securing screws.
• Pull the control box out from the chassis carefully.
3. To remove the Discharge Grille.

• Unhook the discharge grille and pull the discharge
grille out from the chassis carefully.

• Remove 3 screws securing the evaporator(at the
left 2EA in the Eva Holder, at the right 1EA).
106 Indoor Unit

• Unhook the tab on the right inside of the chassis

at the same time, slightly pull the evaporator
toward you until the tab is clear of the slot.
Art Cool-Mirror
Indoor Unit
5. To remove the Motor Cover
• Remove 2 securing screw.
• Pull the motor cover out from the chassis
carefully.
Motor cover
6. To remove the Cross-Flow Fan

• Loosen the screw securing the cross-flow fan to
the fan motor (do not remove).
• Lift up the right side of the cross-flow fan and the
fan motor, separate the fan motor from the cross-
flow fan.
• Remove the left end of the cross-flow fan from the

self-aligning bearing.
Service Manual 107

Exploded View
9. Exploded View
146811-2 135312
152302
668713
146811-2
145200
668713
135314
263020
237900
135080
733010
267110
359011
342800
354210
131410
346810
352150
249951
352115
352116
35211B
263230-2
146811-1
159901
135311
108 Indoor Unit


LOCATION PART No.
DESCRIPTION REMARKS
No. CRNN076SU*0 CRNN096SU*O CRNN126SU*0
131410 CHASSIS ASSEMBLY 3141A20007B R
135080 DECORATION(TOP) 3508A20034A R
135080 DECORATION(BOTTOM) 3508A20034B R
135311 GRILLE ASSEMBLY,DISCHARGE 3531A10137B R
135314 GRILLE ASSEMBLY,INLET MIRROR R
BLUE R
GOLD R
135312 GRILLE ASSEMBLY,FRONT MIRROR R
Art Cool-Mirror
Indoor Unit
BLUE R
GOLD R
145200 LINK 4520A20008A R
146811-1 MOTOR ASSEMBLY,STEP 4681A20055A R
146811-2 MOTOR ASSEMBLY,STEP 4681A20055B R
152302 FILTER (MECH),A/C 5230A20022A R
159901 VANE HORIZONTAL 5990A20015B R
237900 WINDOW,DISPLAY 3790A20037F R
249951 CONTROL BOX ASSEMBLY R
263020 DIGITRON 6302A90003A R
263230-1 THERMISTOR ASSEMBLY(ROOM, PIPE-IN) R
263230-2 THERMISTOR ASSEMBLY(PIPE-OUT) R
267110 REMOTE CONTROLLER ASSEMBLY R
268714 PWB(PCB) ASSEMBLY,MAIN R
342800 BEARING 4280A20004A R
346810 MOTOR ASSEMBLY,INDOOR R
352115 TUBE ASSEMBLY,EVAPORATOR IN R
352116 TUBE ASSEMBLY,EVAPORATOR OUT R
35211B TUBE ASSEMBLY,TUBING 5211AR7066N R
352150 HOSE ASSEMBLY,DRAIN 5251AR1222R R
354210 EVAPORATOR ASSEMBLY,FIRST R
668713 PWB ASSEMBLY,SUB R
668713 PWB ASSEMBLY,SUB R
733010 PLATE 1H00843A R
W0CZZ CAPACITOR,DRAWING 3H01487A R
Service Manual 109

CRNN-SP
Art Cool Type
1. Specification .............................................................................111
2. Functions ..................................................................................112
3. Operation Details......................................................................113
4. Display Function ............................................................................118
6. Piping Diagrams .......................................................................120
7. Wiring Diagrams .......................................................................121
8. Disassembly of the parts ..........................................................122
9. Exploded View ..........................................................................124
110 Indoor Unit

Specifications
1. Specifications
Model Unit CRNN096SP*0 CRNN126SP*0
W 2,600 3,500
Btu/h 8,871 11,942
W 2,925 3,938
Btu/h 9,980 13,435
mm 570*570*137 570*570*137
Dimensions (W*H*D)
inch 22.4*22.4*5.4 22.4*22.4*5.4
Coil Rows x Columns x FPI 2*20*20 2*20*20
Face Area m2 0.17 0.17
Type Turbo Fan Turbo Fan
Motor Output x Number W 24*1 24*1
Fan Air Flow Rate(High) cmm 7.0 8.7
cfm 247 307
Drive Direct Direct
Speed control BLDC BLDC
Indoor Unit
Sound Absorbing Thermal Insulation Material Foamed polystyrene Foamed polystyrene
Air Filter Accessory Accessory
Art Cool
Safety Device Fuse Fuse
Liquid Side mm(inch) 6.35 (1/4) 6.35 (1/4)
Pipe Connections Gas Side mm(inch) 12.7 (1/2) 12.7 (1/2)
Drain Pipe(Internal Dia.) mm 12.2 12.2
Net Weight kg(lbs) 12(26.5) 12(26.5)
Noise Level (Sound Press,1m, H/M/L) dBA±3 36 / 33 / 30 40 / 36 / 31
Power Supply Ø,V,Hz 1,220~240,50 1,220~240,50
Power Cable AWG#:P*mm2 12:3*2.5 12:3*2.5
Refrigerant Control L.E.V L.E.V
Standard Accessories Operation Manual, Installation Manual, Installation guide map, Clamps,
Screws
Front Panel Color

M: Metal, D:Wood, B: Blue
('*' position)

Service Manual 111

Functons
2. Functions
Indoor Unit

• Maintains the room temperature in accordance with the Setting temperature


• High, Med, Low, CHAOS

Signal Receptor
Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
On/Off : Lights up during the system operation.
Sleep Mode : Lights up during Sleep Mode Auto operation.
Timer : Lights up during Timer operation.
Defrost Mode : Lights up during Defrost Mode or
Hot Start operation.
Temperature : Indicate the setting temperature.


Defrost(Deice) control (Heating)
Natural Air Control by CHAOS Logic • Both the indoor and outdoor fan stops dur-
• The fan is switched to intermittent or irregular operation ing defrosting.
• The fan speed is automatically switched from high to low speed.
Airflow Direction Control • The indoor fan does not rotate until the
• The louver can be set at the desired position or swing evaporator pipe temperature will be reached
up and down automatically. at 28°C.
112 Indoor Unit

Operation Details
(1) MAIN UNIT FUNCTION
• DISPLAY
Operation Indicator

Timer Indicator
Defrost Indicator

• When the intake air temperature reaches 0.5°C below the setting temperature, the compressor and the out-
door fan stop.
• When it reaches 0.5°C above the setting temperature, they start to operate again.
Indoor Unit
Art Cool
Compressor OFF Temperature ➲ Setting Temperature -0.5°C

detected and the setting temperature is automatically set according to the intake air temperature.
24°C ≤ Intake Intake Air Temperature <26°C ➲ Intake Air Temperature -1°C
18°C ≤ Intake Intake Air Temperature <24°C ➲ Intake Air Temperature -0.5°C
• While the intake air temperature is between compressor on temperature and compressor off temperature,
10-min dehumidification operation and 4-min compressor off repeat.
Compressor ON temperature ➲ Setting Temperature +0.5°C
Compressor OFF temperature ➲ Setting Temperature -0.5°C
Service Manual 113

Operation Details

• When the intake air temperature reaches +3°C above the setting temperature, the compressor is turned
off. When below the setting temperature, the compressor is turned on.
Compressor ON temperature ➲ Setting temperature
Compressor OFF temperature ➲ Setting temperature+3°C
• While in compressor on, the indoor fan is off when the indoor pipe temperature is below 20°C, when above
28°C, it operates with the low or setting airflow speed. When the indoor pipe temperature is between 20°C
and 28°C, it operates with Super-Low(while in sleep mode, with the medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temperature is below 33°C, when above
35°C , it operates with the low airflow speed.
outdoor fan is turned on/off according to the indoor pipe temperature
■ Fuzzy Operation
air temperature at that moment as follows.
24°C ≤ Inatake Air Temperature ➲ Fuzzy Operation for Cooling
21°C ≤ Inatake Air Temperature <24°C ➲ Fuzzy Operation for Dehumidification
Inatake Air Temperature <21°C ➲ Fuzzy Operation for Heating

Compressor OFF Temperature ➲ Setting Temperature + 0.5°C
26°C≤ Intake Air Temperature ➲ 25°C
24°C≤ Intake Air Temperature <26°C ➲ Intake Air Temperature + 1°C
22°C≤ Intake Air Temperature <24°C ➲ Intake Air Temperature + 0.5°C
18°C≤ Intake Air Temperature <22°C ➲ Intake Air Temperature
perature.
114 Indoor Unit

Operation Details

Compressor ON Temperature ➲ Setting Temperature + 0.5°C
Compressor OFF Temperature ➲ Setting Temperature +0.5°C
24°C ≤ Intake Air Temperature <26°C ➲ Intake Air Temperature +1°C
22°C ≤ Intake Air Temperature <24°C ➲ Intake Air Temperature +0.5°C
18°C ≤ Intake Air Temperature <22°C ➲ Intake Air Temperature
Indoor Unit
• According to the setting temperature selected by Fuzzy rule, when the intake air temperature is 3°C or more
above the setting temperature, the compressor is turned off. When below the setting temperature, the com-
Art Cool
pressor is turned on.
Compressor ON Temperature ➲ Setting Temperature
Compressor OFF Temperature ➲ Setting Temperature + 3°C
20°C≤Intake Air Temperature ➲ Intake Air Temperature + 0.5°C

Service Manual 115

Operation Details


• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hour > is input by the remote control while in
the low.
the medium.

• By the Chaos Swing key input, the louvers vane automatically operate with the Chaos Swing or they are
fixed to the desired direction.

CLOSED CLOSED
OPEN OPEN

• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the other
mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.
• During the JET HEAT function at any moment, the A/C starts to blow the hot air with side louvers closed at
extremely high speed for 60 minutes setting the room temperature automatically to 30°C.
116 Indoor Unit

Operation Details

■ Test operation
Indoor Unit
Art Cool
■ Auto restart
• If the indoor pipe temperature is below 0°C in 7 min. after the compressor operates without any pause while
in cooling cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the
• When the indoor pipe temperature is 7°C or higher after 3 min. pause of the compressor, the compressor
and the outdoor fan is turned on according to the condition of the room temperature.
• When a key is input by the remote control while the slide switch on the main unit of the appliance is on the
forced operation position, the error sound "beep-beep-beep-beep-beep-" is made 10 times to indicate that
the remote control signal cannot be received.
Service Manual 117

Display Function
4. Display Function
Operation Indicator
• Cooling, Soft Dry, Fan, Heating

• Sleep Mode
Timer Indicator
• Timer Mode
Defrost Indicator
• Hot-start, Defrost
118 Indoor Unit

Hanger Hole
570 137
568
Pipe Hole Fix Hole
(unit: mm)
Indoor Unit
Art Cool
Model W H D
CRNN096SP*0
570 570 137
CRNN126SP*0
Service Manual 119

Piping Diagrams
6. Piping Diagrams
:Cooling
Filter
Turbo Fan Filter
lndoor unit
: Thermistor

[unit: mm(inch)]
Model Gas Liquid
CRNN096SP*0
CRNN126SP*0 12.7(1/2) 6.35(1/4)
120 Indoor Unit

Wiring Diagrams
7. Wiring Diagrams
Indoor Unit
Art Cool
3 4
TO OUTDOOR UNIT (TRANSMISSION)
CONNECTOR
Service Manual 121


Warning :
any checks.
1. To remove the Grille from the Chassis.

- Pull the grille bottom, the remove 2 securing screws.
- Lift the both lower parts of panel front.
- After pull down this panel a bit, separate connecting
wire with product.
Panel Front
Connector

Step Motor Connectors
- Before removing the control box, be sure to Sensor Connector
disconnect the wires from PWB.
- Pull the cover control out from the control box
and disconnect other wires.
- Remove securing screws.
- Pull the control box out from the chassis carefully.
4Way/Fan Connector
Comp Connector
Motor
Power Connector Connector
Power Connector
Comp Connector
122 Indoor Unit


- Remove 4 screws securing the evaporator.
- Pull the evaporator out from the chassis carefully.
4. Before removing the Turbo Fan.

- Remove the securing screws from the chassis. Top Cover Air Guide
- Pull the pipe cover, top cover and the air guide.
Indoor Unit
Art Cool
Pipe Cover
5. To remove the Motor.

- Remove the securing bolt from the motor shaft. Bracket
- Pull the fan out from the motor shaft.

- Remove 4 screws securing motor mount from the Turbo Fan
chassis and lift up the motor mount and the bracket.
Bolt Motor Mount
Service Manual 123

124
135515
249951
354210
Exploded View
268714
267110
Indoor Unit
330870
144710-1
268717
352118
146811 352150 263230-1
9. Exploded View
135316 263230-2
135500-3
152312
144710-2
146811 352090 131410
147581
135311-2
135303
146811
135500-2
147581
135311-1
346810
146811
135314
268712
135311-3 147581 146811

359012
135500-1

LOCATION PART No.
DESCRIPTION REMARKS
No. CRNN096SP*0 CRNN126SP*0
131410 CHASSIS ASSEMBLY 3141A20004F R
135303 GRILLE,INLET BLEU 3530A10071B R
WOOD 3530A10071C R
METAL 3530A10071D R
135311-1 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A20069E R
135311-2 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A20069D R
135311-3 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A20069L R
135314 GRILLE ASSEMBLY,INLET BLEU 3531A20113B R
WOOD 3531A20113C R
METAL 3531A20113A R
135316 GRILLE ASSEMBLY,FRONT(INDOOR) BLEU 3531A10161Y R
WOOD 3531A10161X R
METAL 3531A10145S R
135500-1 COVER 3550A20123A R
Indoor Unit
135500-2 COVER 3550A20124A R
Art Cool
135500-3 COVER 3550A20060A R
135515 COVER ASSY,TOP(INDOOR) 3551A20031A R
144710-1 GEAR ASSEMBLY 4471A20001C R
144710-2 GEAR ASSEMBLY 4471A20001D R
147581 LOUVER,HORIZONTAL 4758A20014B R
152312 FILTER ASSEMBLY,AIR CLEANER 5231A20005A R
249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20270K 4995A20270A R
263230-1 THERMISTOR ASSEMBLY 6323A20004J R
263230-2 THERMISTOR ASSEMBLY 6323AQ3226W R
267110 REMOTE CONTROLLER ASSEMBLY 6711A20039P R
268712 PWB(PCB) ASSEMBLY,DISPLAY 6871A20238B R
268714 PWB(PCB) ASSEMBLY,MAIN 6871A10088V 6871A10088A R
268717 PWB(PCB) ASSEMBLY,SUB 6871A30027A R
346810 MOTOR ASSEMBLY,INDOOR 4681A20047B R
352090 AIR GUIDE 5238A10007A R
352118 TUBE ASSEMBLY,MENIFOLD(INDOOR) 5211A20983A R
352150 HOSE ASSY,DRAIN 5251AR1222Q R
354210 EVAPORATOR ASSEMBLY,FIRST 5421A20072A R
359012 FAN,TURBO 5900A00003A R
Service Manual 125

CRNN-SV
Art Cool Type(Wide)
1. Specification .............................................................................127
2. Installation.................................................................................128
4. Display Function ............................................................................135
6. Piping Diagrams .......................................................................137
7. Wiring Diagrams .......................................................................138
8. Disassembly of the parts ..........................................................139
9. Exploded View ..........................................................................141
126 Indoor Unit

Specifications
1. Specifications
Model Unit CRNN126SV*0 CRNN186SV*0
W 3,500 5,300
Btu/h 11,942 18,084
W 3,938 5,963
Btu/h 13,435 20,345
mm 928*522*147 928*522*147
Dimensions (W*H*D)
inch 36.5*20.6*5.8 36.5*20.6*5.8
Coil Rows x Columns x FPI - -
Face Area m2 - -
Type Turbo Fan Turbo Fan
Motor Output x Number W 12.9*2 12.9*2
Fan Air Flow Rate(High) cmm 10 12
cfm 353 424
Drive Direct Direct
Speed control BLDC BLDC
Sound Absorbing Thermal Insulation Material Foamed polystyrene Foamed polystyrene
Safety Device Fuse Fuse
Liquid Side mm(inch) 6.35 (1/4) 9.52 (3/8)
Pipe Connections Gas Side mm(inch) 12.7 (1/2) 15.88 (5/8)
Drain Pipe(Internal Dia.) mm 12.2 12.2
Net Weight kg(lbs) 15(33) 15(33)
Noise Level (Sound Press,1m, H/M/L) dBA±3 43 / 42 / 40 45 / 43 / 41
Power Supply Ø,V,Hz 1, 220~240, 50 1, 220~240, 50
Indoor Unit
Art Cool-Wide
Power Cable AWG#:P*mm2 12:3*2.5 12:3*2.5
Refrigerant Control L.E.V L.E.V
Operation Manual, Installation Manual, Installation Panel, Paper
Pattern for Installation, Clamps, Screws
Front Panel Color
('*' Position) M: Metal, D: Wood, B: Blue
Notes:-
Service Manual 127

Installation
2. Installation
Indoor Unit

• Maintains the room temperature in accordance with the Setting Temp.


• High, Med, Low, CHAOS

Signal Receptor
Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
On/Off : Lights up during the system operation.
Sleep Mode : Lights up during Sleep Mode Auto operation.
Timer : Lights up during Timer operation.
Defrost Mode : Lights up during Defrost Mode or
Hot Start operation.
Operation indication lamps


• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours. Defrost(Deice) control (Heating)
Natural Air Control by CHAOS Logic • Both the indoor and outdoor fan stops dur-
• The fan is switched to intermittent or irregular operation ing defrosting.
• The fan speed is automatically switched from high to low speed. Hot-start Control (Heating)
Airflow Direction Control • The indoor fan does not rotate until the
• The louver can be set at the desired position or swing evaporator pipe temperature will be reached
up and down automatically. at 28°C.
128 Indoor Unit

Operation Details
1. MAIN UNIT FUNCTION
• DISPLAY
Operation Indicator

Timer Indicator
Defrost Indicator

• When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan
stop.
• When it reaches 0.5°C above the setting temp, they start to operate again.
Compressor ON Temp ➲ Setting Temp+0.5°C
Compressor OFF Temp ➲ Setting Temp-0.5°C

detected and the setting temp is automatically set according to the intake air temperature.
Indoor Unit
Art Cool-Wide
24°C ≤ Intake Intake Air Temp<26°C ➲ Intake Air Temp-1°C
18°C ≤ Intake Intake Air Temp<24°C ➲ Intake Air Temp-0.5°C
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidifica-
tion operation and 4-min compressor off repeat.
Compressor ON Temp. ➲ Setting Temp+0.5°C
Compressor OFF Temp. ➲ Setting Temp-0.5°C
Service Manual 129

Operation Details

• When the intake air temp reaches +3°…above the setting temp, the compressor is turned off. When below
the setting temp, the compressor is turned on.
Compressor ON Temp. ➲ Setting Temp.
Compressor OFF Temp. ➲ Setting Temp.+3°C
• While in compressor on, the indoor fan is off when the indoor pipe temp. is below 20°C, when above 28°C
, it operates with the low or setting airflow speed. When the indoor pipe temp is between 20°C and 28°C, it
operates with Super-Low(while in sleep mode, with the medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C, when above 35°C ,
it operates with the low airflow speed.
outdoor fan is turned on/off according to the indoor pipe temp.
■ Defrost Control
• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing,
reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.
• After 40 min heating mode operation, at 4 min interval, whether to carry out defrost control or not and the
time of defrost control are determined according to the following conditions.
1) While in heating mode operation, the maximum of the indoor pipe temperature is measured and it is com-
pared with the present indoor pipe temperature to get the difference of the indoor pipe temperatures (=the
maximum temperature of indoor pipe ? the present temperature of indoor pipe), according to which,
whether to carry out defrost control or not is determined.
2) According to the need of defrost control shown above and the elapsed time of heating mode operation at
that moment, the defrost control time is determined.
3) When the determined time of defrost control is below 7 min, heating mode operation continues without car-
rying out defrost control. According to the procedure stated above, the determination is made again. When
the defrost control time is 7 min or longer, defrost control is then carried out.
• While in defrost control, the minimum temp of the indoor pipe is measured and it is compared with the pre-
sent temp of the indoor pipe to get the difference of the indoor pipe temperatures (=the present temperature
of the indoor pipe ? the minimum temperature of the indoor pipe). When the difference is 5°C or higher,
defrost control is completed and heating mode operation is carried out.
• While in defrost control, if the defrost time determined before the start of defrost control is completed,
defrost control stops and heating mode operation is carried out regardless of the above condition.
• When the indoor pipe temp is 42°C or above, defrost control is not carried out even if the condition is one of
the defrost conditions above.
• While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are
off.
130 Indoor Unit

Operation Details
■ Fuzzy Operation
air temp at that moment as follows.
24°C ≤ Inatake Air Temp ➲ Fuzzy Operation for Cooling
21°C ≤ Inatake Air Temp<24°C ➲ Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C ➲ Fuzzy Operation for Heating

Compressor ON Temp ➲ Setting Temp +0.5°C
Compressor OFF Temp ➲ Setting Temp + 0.5°C
26°C≤ Intake Air Temp ➲ 25°C
24°C≤ Intake Air Temp<26°C ➲ Intake Air Temp + 1°C
22°C≤ Intake Air Temp<24°C ➲ Intake Air Temp + 0.5°C
18°C≤ Intake Air Temp<22°C ➲ Intake Air Temp
Indoor Unit
Art Cool-Wide
perature.

Compressor ON Temp ➲ Setting Temp + 0.5°C
Compressor OFF Temp ➲ Setting Temp+0.5°C
24°C ≤ Intake Air Temp<26°C ➲ Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C ➲ Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C ➲ Intake Air Temp
Service Manual 131

Operation Details

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more above
the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.
Compressor ON Temp ➲ Setting Temp
Compressor OFF Temp ➲ Setting Temp + 3°C
20°C≤Intake Air Temp ➲ Intake Air Temp + 0.5°C



• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in
the low.
the medium.
132 Indoor Unit

Operation Details

• By the Chaos Swing key input, the louvers vane automatically operate with the Chaos Swing or they are fixed
to the desired direction.

CLOSED CLOSED
7° 7°
OPEN OPEN
■ Jet Cool Mode Operation (H/P Model)

• During the JET HEAT function at any moment, the A/C starts to blow the hot air with side louvers closed at
extremely high speed for 60 minutes setting the room temp. automatically to 30°C.
Indoor Unit
Art Cool-Wide
■ Test operation
• During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room tem-
perature and resets in 18±1 minutes.
Service Manual 133

Operation Details
■ Auto restart
• If the indoor pipe temp is below 0°C in 7 min. after the compressor operates without any pause while in
cooling cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the
• When the indoor pipe temp is 7°C or higher after 3 min. pause of the compressor, the compressor and the
outdoor fan is turned on according to the condition of the room temperature.
• When a key is input by the remote control while the slide switch on the main unit of the appliance is on the
forced operation position, the error sound "beep-beep-beep-beep-beep-" is made 10 times to indicate that
the remote control signal cannot be received.
134 Indoor Unit

Display Function
4. Display Function
Operation Indicator
• Cooling, Soft Dry, Fan, Heating
• Sleep Mode
Timer Indicator
• Timer Mode
Defrost Indicator
• Hot-start, Defrost
Indoor Unit
Art Cool-Wide
135 Indoor Unit Service Manual 135

CRNN126SV*0
CRNN186SV*0
928 147
522
Pipe Hole Pipe Hole
240mm
240mm
60mm 60mm
(Unit: mm)
Model W H D
CRNN126SV*0
928 522 147
CRNN186SV*0
136 Indoor Unit

Piping Diagrams
6. Piping Diagrams
:Cooling
Filter
Turbo Fan Filter
lndoor unit
: Thermistor

[unit: mm(inch)]
Model Gas Liquid
CRNN126SV*0
15.88(5/8) 9.52(3/8)
CRNN186SV*0
Indoor Unit
Art Cool-Wide
Service Manual 137

Wiring Diagrams
7. Wiring Diagrams
1(L) 2(N) 3 4
(Transmission)
CONNECTOR
138 Indoor Unit


Warning :
any checks.
1. To remove the Grille from the Chassis.

- Push mark[ ] on the grille bottom then pull it down
and remove 3 securing screws.
- Lift the both lower parts of panel front.
- After pull down this panel a bit, separate connecting
wire with product.
Panel Front
Connector
Indoor Unit
- Before removing the control box, be sure to
Art Cool-Wide
disconnect the wires from PWB.
- Pull the cover control out from the control box
and disconnect other wires.
- Remove securing screws.
- Pull the control box out from the chassis carefully.
Service Manual 139


- Remove 4 screws securing the evaporator.
- Pull the evaporator out from the chassis carefully.
4. Before removing the Turbo Fan.

- Remove the securing screws from the chassis. Top Cover
Air Guide
- Pull the pipe cover, top cover and the air guide.
Pipe Cover
5. To remove the Motor.

- Remove the securing bolt from the motor shaft.
Turbo Fan
- Pull the fan out from the motor shaft. Bracket
- Remove 4 screws securing motor mount from the
chassis and lift up the motor mount and the bracket.
Bolt
Motor Mount
140 Indoor Unit

Exploded View
9. Exploded View
249951 352380-2
352380-1
146811-1
268714
147582
135311-1
131410
263230-1
263230-2 135500-3
146811-1
147582
349490
346810-2
359012-2
346810-1 147581
135500-2 146811-1
359012-1
135311-2 135311-1
330870
135500-1
668713
Indoor Unit
Art Cool-Wide
267110
354210 352115
146811-2
352110
268712
135303-1
352116
352150
35211B
135303-2
135316
152302
Service Manual 141

10. Replacement parts List

LOCATION PART No .
DESCRIPTION REMARKS
No. CRNN126SV*0 CRNN186SV*0
131410 CHASSIS ASSEMBLY 3141A20008A R
135311-1 GRILLE ASSEMBLY, DISCHARGE(INDOOR) 3531A20124B R
135311-2 GRILLE ASSEMBLY, DISCHARGE(INDOOR) 3531A20125B R
135316 GRILLE ASSEMBLY, FRONT(INDOOR) BLUE 3531A10289A R
WOOD 3531A10153V R
METAL 3531A10153Z R
135303-1 GRILLE, INLET BLUE 3530A10116B R
WOOD 3530A10116A R
METAL 3530A10116D R
135303-2 GRILLE, INLET BLUE 3530A10117B R
WOOD 3530A10117A R
METAL 3530A10117D R
135500-1 COVER 3550A20060A R
135500-2 COVER(RIGHT) 3550A20120B R
135500-3 COVER(LEFT) 3550A20121B R
140570 LOCKER ASSEMBLY 3H02857A R
146811-1 MOTOR ASSEMBLY, STEP 4681A20055A R
146811-2 MOTOR ASSEMBLY, STEP 4681A20055C R
147581 LOUVER, HORIZONTAL 4758A20033A R
147582 LOUVER, VERTICAL 4758A20034A R
152302 FILTER(MECH), A/C 5230A10006B R
237900 WINDOW, DISPLAY 3790A20035A R
249951 CONTROL BOX ASEMBLY, INDOOR 4995A10098J 4995A10098K R
263230-1 THERMISTOR ASSEMBLY(ROOM, PIPE-IN) 6323A20004J R
263230-2 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226V R
267110 REMOTE CONTROLLER ASSEMBLY 6711A20039P R
268712 PWB(PCB) ASSEMBLY, DISPLAY 6871A20250A R
268714 PWB(PCB) ASSEMBLY, MAIN 6871A10088T 6871A10088U R
346810-1 MOTOR ASSEMBLY, INDOOR(R) 4681A20047C R
346810-2 MOTOR ASSEMBLY, INDOOR(L) 4681A20047D R
349490 ORIFICE ASSEMBLY 4949A20002A R
352115 TUBE ASSEMBLY, EVAPORATOR IN 5211A10423A R
352116 TUBE ASSEMBLY, EVAPORATOR OUT 5211A20301H R
35211B TUBE ASSEMBLY, TUBING 5211A10424A R
352150 HOSE ASSEMBLY, DRAIN 5251AR1222Q R
352380-1 AIR GUIDE(R) 5238A10009A R
352380-2 AIR GUIDE(L) 5238A10010A R
354210 EVAPORATOR ASSEMBLY, FIRST 5421A20104A R
359012-1 FAN, TURBO(L) 5900A00004A R
359012-2 FAN, TURBO(R) 5900A00005A R
668713 PWB(PCB) ASSEMBLY, SUB 6871A30029A R
142 Indoor Unit

CRNN-CAA/CBA/CCA/CDA(With Case)
Floor Standing Type
1. Specification .............................................................................144
2. Functions ..................................................................................145
5. Piping Diagrams .......................................................................149
6. Wiring Diagrams .......................................................................150
7. Exploded View ..........................................................................151
Floor Standing
Indoor Unit
Service Manual 143

Specifications
1. Specifications
Model Unit CRNN076CAA0 CRNN096CBA0 CRNN126CBA0 CRNN186CCA0 CRNN246CDA0
W 2,100 2,600 3,500 5,300 7,000
Cooling Capacity kcal/h 1,806 2,235 3,009 4,557 6,019
Btu/h 7,165 8,871 11,942 18,084 23,885
W 2,363 2,925 3,938 5,963 7,075
Heating Capacity kcal/h 2,031 2,515 3,385 5,127 6,771
Btu/h 8,061 9,980 13,435 20,345 26,870
Color White White White White White
mm 1050*620*218 1170*620*218 1170*620*218 1410*620*218 1530*620*218
Dimensions (W*H*D)
inch 41.3*24.4*8.6 46.1*24.4*8.6 46.1*24.4*8.6 55.5*24.4*8.6 60.2*24.4*8.6
Casing Galvaniged Steel Plate
Coil Rows x Columns x FPI 2*9*20 2*9*20 2*9*20 2*9*20 2*9*20
Face Area m 2
0.19 0.19 0.19 0.19 0.19
Moisture removal l/h. 1.0 1.2 1.5 1.8 2.2
Type Sirroco Fan
Motor Output x Number W 26 26 47 47*2 47*2
Fan Air Flow Rate(High) cmm 6.4/5.9/5.4 7.0/6.5/6.0 10.2/9.2/8.2 11.9/10.5/9.2 13.2/11.7
cfm 226/208/190 247/229/212 360/325/289 420/370/325 466/413/360
Drive Direct
Speed control Setps control
Temperature Control Micro processor, Thermostat for cooling and heating
Sound Absorbing Thermal Insulation Material Foamed Ploystyrene
Liquid Side mm(inch) 6.35(1/4) 6.35(1/4) 6.35(1/4) 9.52(3/8) 9.52(3/8)
Pipe Connections Gas Side mm(inch) 12.7(1/2) 12.7(1/2) 12.7(1/2) 15.88(5/8) 15.88(5/8)
Drain Pipe(Internal Dia.) mm 25 25 25 25 25
Net Weight kg(lbs) 22(48.5) 25(55.1) 25(55.1) 27.5(60.6) 32.5(71.7)
Noise Level (Sound Press,1.5m, H/M/L) dBA±3 36/34/32 36/34/33 37/35/34 38/36/35 40/38/36
Power Supply Ø,V,Hz 1, 220~240, 50 1, 220~240, 50 1, 220~240, 50 1, 220~240, 50 1, 220~240, 50
Power Cable AWG#:P*mm2 12:3*2.5 12:3*2.5 12:3*2.5 12:3*2.5 12:3*2.5
Refrigerant Control L.E.V L.E.V L.E.V L.E.V L.E.V
Standard Accessories Hose, Clamp Metal, Washer fixing Plate, Sealing Pads, Clamps, Screws,
Washer for Hanging Bracket, Insulation for Fitting

144 Indoor Unit

Functions
2. Functions
Indoor Unit
Hot-start Control (Heating) • The indoor fan sdoes not rotate until the evaporator pip-
ing temperature reaches 25°C.
Floor Standing
Indoor Unit
Service Manual 145

Operation Dtails


(COMP. ON)

3 minutes 3 minutes

146 Indoor Unit

Operation Dtails


(Compressor OFF)
A B A
Setting Temperature
(Compressor ON)
10sec. 10sec.

Fan Speed speed
• The indoor fan stops until the evaporator piping temperature reaches 25°C.
PIPING 1min
Floor Standing
Indoor Unit
TEMPERATURE
25°C
22°C
INDOOR FAN
COMPRESSOR ON
Service Manual 147

CRNN076CAA0 A
59
CRNN096CBA0
CRNN126CBA0
120
CRNN186CCA0
CRNN246CDA0 B
120
200
218
545
620
Model A B
CRNN076CAA0 1,050 600
CRNN096CBA0 1,170 720
CRNN126CBA0 1,170 720
CRNN186CCA0 1,410 960
CRNN246CDA0 1,530 1,080
Air Outlet
Wired LCD
Remote Control
Air Filter
Air Inlet
148 Indoor Unit

Piping Diagrams
5. Piping diagrams
:Cooling
Filter
Sirroco Fan Filter
lndoor unit
: Thermistor

[unit: mm(inch)]
Model Gas Liquid
CRNN076CAA0 12.7(1/2) 6.35(1/4)
CRNN096CBA0 12.7(1/2) 6.35(1/4)
CRNN126CBA0 12.7(1/2) 6.35(1/4)
CRNN186CCA0 15.88(5/8) 9.52(3/8)
CRNN246CDA0 15.88(5/8) 9.52(3/8)
Floor Standing
Indoor Unit
Service Manual 149

Wiring Diagrams
6. Wiring Diagrams
CN-PIPE/O
(Transmission)
CONNECTOR
CN-MOTOR AC FAN MOTOR OUTPUT YELLOW MOTOR OUTPUT OF PHASE CONTROL
150 Indoor Unit

Exploded view
8. Exploded View
263230-1
263230-2
263230-3
346810
Floor Standing
249951 268714 Indoor Unit
2671100
Service Manual 151


LOCATION PART NO.
DESCRIPTION REMARK
NO. CRNN076CCA0 CRNN096CBA0 CRNN126CBA0 CRNN186CCA0 CRNN246CDA0
249951 CONTROL BOX ASSEMBLY,INDOOR 4995A20297H 4995A20297J 4995A20297K 4995A20297L 4995A20297M R

263230-1 THERMISTOR ASSEMBLY(ROOM) 6323A30004E R
263230-2 THERMISTOR ASSEMBLY(PIPE-IN) 6323A30002A R
263230-3 THERMISTOR ASSEMBLY(PIPE-OUT) 6323AQ3226T R
268714 PWB(PCB) ASSEMBLY,MAIN 6871A10108H 6871A10108J 6871A10108K 6871A10108L 6871A10108M R
346810 MOTOR ASSEMBLY,INDOOR 4681A20100H 4681A20100J 4681A20100K 4681A20100L 4681A20100N R
346810 MOTOR ASSEMBLY,INDOOR 4681A20100M 4681A20100P R
152 Indoor Unit

Outdoor unit
Outdoor Unit
Service Manual 153

CRUN Series
1. Specifications ...........................................................................155
2. Function ....................................................................................156
5. Refrigerant Cycle Diagrams ....................................................170
6. Wiring Diagrams .......................................................................172
7. Exploded View ..........................................................................175
154 Outdoor Unit

Specifications
1. Specifications
Model Unit CRUN458S0 CRUN1008T0
kW 13.0 28.0
Btu/h 44,358 96,000
kW 14.5 31.5
Btu/h 49,500 108,000
Casing Color WARM GRAY WARM GRAY
Dimensions mm 900*1,225*370 1,246*1,519*700
(W*H*D) inch 35.43*48.42*13.57 49.07*58.84*27.56
Cooling Btu/hW 8.24 8.93
E.E.R
Heating Btu/hW 10.00 10.24
Cooling W/W (kcal/hW) 2.56 (2.08) 2.67 (2.25)
C.O.P
Heating W/W (kcal/hW) 2.93 (2.37) 3.00 (2.53)
Cooling kW 5.0 10.5
Input
Heating kW 5.2 11.0
Operation limits (Cooling/ Heating) °C -5~48 / -15~24 -5 ~48 / -20 ~ 24
Model JT100BEVYE JT100BEVTYE + JT212DATYE
Type Hermetically Sealed Scroll Type
Piston Displacement cm3/rev 53.4 53.4+117.3
Compressor
Number of Revolution r.p.m 6,750 6,750+3,450
Motor Output x Number kW 3.5 x 1 (3.5 + 3.75)
Starting Method Direct on Line Direct on Line
Type Propeller Fan Propeller Fan
Motor Output x Number W 84*2 271*2
Fan Air Flow Rate(High) cmm 70 180
cfm 2471 6354
Drive Capacitor Run Capacitor Run
Pipe Liquid Side mm(inch) 12.7(1/2) 15.88(5/8)
Connections Gas Side mm(inch) 19.05(3/4) 28.58(1 1/8)
Net Weight kg(lbs) 125 300
Noise Level (Sound Press,1m, H/M/L) dBA±3 57 60
Safety Device High Pressure Switch, Fan Motor Safety Thermostat, Inverter
Overload Protector, Over Current Relay, Fuse
Control range of capacity % 10~115 10~130
Refrigerant Name R407C R407C
Refrigerant Charge 3.5 10
Control L.E.V. L.E.V.
Refrigerant Oil DAPHNE FVC68D DAPHNE FVC68D
Refrigerant Oil
Charge Volume CC 2,000 1,600 + 2,700
Power Supply Ø,V,Hz 3, 380~415, 50 3, 380~415, 50
Standard Accessories Installation Manual
Notes:-
Outdoor Unit

Service Manual 155

Function
2. Function
Scroll compressor that operates on 30~120Hz by inverter drive enables
Inverter Compressor capacity control.
The oil separator is a device that collects the discharged oil from the
Oil separator
Compressor. The collected oil is constantly recycled to the compressor via
capillary tube.
High pressure sensor for sensing the operating status of the indoor by refriger-
High Pressure Sensor
ant pressure which senses discharge pressure.
Low Pressure Sensor Low pressure sensor for sensing the operating status of the indoor by refriger-
ant pressure which senses suction pressure.
Hot gas Solenoid valve Valve is open by low pressure safety control when pressure drops.
Liquid Injection Solenoid valve Controls liquid injection in order to prevent overheating.
Linear Expansion Valve(LEV) Linear expansion valve is controlled by micro controller when heating.
When cooling linear expansion valve is fully opened.
Outdoor Unit
Power relay control
• If power is on, it will operate to charge capacitor on controller and power relay will operate after about
2~5sec.
Comp. Freq. control

• The final operating freq. of comp. is set to sum of operating indoor unit capacities.
Overheatng and over current Protection(IPM)
Bypass control • Hot gas and Liquid injection control by solenoid valve
V/F control
• It will be changed the drive voltage of comp. according to operating frequency.
Total current control (over current protection)
4 way valve control

• It is only operated in the heating operation mode except defrosting operation.
Outdoor fan motor control

• High speed/Low speed
Discharge pipe temperature control
LEV Control
Discharge Pressure control
Suction Pressure control
156 Outdoor Unit

Operation detail
3. Operation detail
3.1 CRUN458S0
■ Compressor Control
(1) Compressor operation method
- In order to stop the compressor, decrease the frequency to 30Hz, and turn off.
- Rising speed of frequency : 1Hz/2seconds
Decreasing speed of frequency: 1Hz/1second.
(2) Compressor Operation Step
Step ICOF Step ICOF - Maximum frequency for ICOFis limitted by the temperature of outdoor air.
0 0 16 60
1 30 17 62
2 32 18 64 *ICOF : Inverter Compressor Operation Frequency
3 34 19 66
4 36 20 68
5 38 21 70
6 40 22 75
7 42 23 80
8 44 24 85
9 46 25 90
10 48 26 95
11 50 27 100
12 52 28 105
13 54 29 110
14 56 30 115
15 58 31 120
(3) Long piping Compensation

- The length of longest pipe from outdoor unit to indoor unit
- By the long pipe compensation, the decrease of capacity is suppressed
- Compensation control is done in 2 stages, short(standard), long
- Short(standard): ~ 30m
Long : ~ 60m
(4) Starting Method
According to table beside, change the step to base step(Step_base) for 3.5 minutes.
• Step 1 = 1 (30Hz)
• Step 2 = determined by pressure control
• Step 2 = (Step 1 + Step_base)/2
• Step 3 = (Step 2 + Step_base)/2 Consumed time 1 min 0.5min 0.5 min 0.5 min 0.5 min 0.5 min
• Step 4 = (Step 3 + Step_base)/2
• Step 5 = (Step 4 + Step_base)/2 Comp. Step Step 1 Step 2 Step 3 Step 4 Step 5 Step_base
(5) Pressure Control(Stage B)

- In heating operation, ICOF is controlled for high pressure to reach base pressure(21bar).
Outdoor Unit
High_Pressure > 21bar → Step down

High_Pressure < 19 bar → Step up
- In cooling operation, ICOF is controlled for low pressure to reach base pressure(6.6bar)
Low_Pressure < 6.1bar → Step down
Low_Pressure > 7.1bar → Step up
Service Manual 157

Operation detail
(6) Restart of Compressor

- In order to maintain equilibrium of pressure and prevention motor wire from generation of heat, after the
compressor is turned off, for 3 minutes it should not be turned on.
■ Linear Expansion Valve(LEV) Control
(1) Control type
LEV for Indoor Unit

LEV
for Outdoor Unit On state Off state Thermo off state
indoor unit Indoor unit Indoor unit
At starting - - - -
Cooling
Feed back Feed back - -

-
control control
At starting - - - -
Heating
Feed back Freed back Feed back

- -
control control control
Deicing - - - -
In case that main power is first turned on or in heating operation, there is no indoor unit turn on signal for 4
minutes after all of indoor units are turned off, then outdoor unit LEV is fully opened.
(2) Starting control for LEV
1 min 0.5 min 0.5 min 0.5 min 0.5 min
Outdoor Cooling Fully closed

LEV Heating 0.7 x Base pulse 0.8 x Base pulse 0.9 x Base pulse Base pulse
On Indoor Cooling 0.7 x Base pulse 0.8 x Base pulse 0.9 x Base pulse 1.1 x Base pulse Base pulse
LEV Heating Base pulse
Off Indoor Cooling Fully closed

LEV Heating 200 pulse On/Off
158 Outdoor Unit

Operation detail
■ Control of Outdoor Unit Fan

(1) Outdoor unit fan is controlled by motor which can be rotated high/low speed
(2) Steps of outdoor unit fan speed : 4 Steps
Step_Fan Left Right
4 High High
3 Low Low
2 High X
1 Low X
0 X X
(3) Determination of fan speed(Step_Fan)
Step_Fan Step_Fan
∑Qj ∑Qj
(Cooling) (Heating) ∑Qj : Total capacity summation of indoor units
7~24 3 7~24 3 (in Btu/h unit)
25~60 4 25~60 4
■ Control of Reversing Valve

1. Initial state: keep up OFF state
2. Cooling and Deicing operation: OFF
Heating operation : ON
3. Change operation mode(Cooling and Heating): 3minutes restarting, reversing valve ON.
4. Compressor stop because of Thermo-OFF: keep up the present state.
■ Hot Gas Bypass Valve
(1) General control
1. At initial start of compressor: Turn on for 1 min.
2. After compressor OFF: Turn on for 10 minutes
(This operation is resulted in equilibrium of pressure)
■ Deicing Operation
(1) The start condition of deicing operation
1. 10 minutes passed, since compressor starts
2. One of the two temperature of heat exchanger pipe in outdoor unit is continuously under the temper-
ature of start condition of deicing operation for 20 seconds or more. Outdoor Unit
Service Manual 159

Operation detail
■ Oil Return Operation

(1) Conditions for oil return operation
1. Compressor on time (normal operation not full capacity operation) is 6 hours or more.
2. During operation, deicing operation is started or the load is changed to full capacity operation, the
cumulative time is reset
(2) Process of oil return operation
1. Change the ICOF Step to 16.
2. In heating operation, oil return operation is performed in cooling mode by turning reversing valve off.
3. The method of handling reversing valve is the same that of same deicing operation
(3) Finishing oil return operation
1. After oil return operation carried out for 3 minutes, return to normal operation
■ Safety Control
(1) Control to prevent high pressure
1. If the measured pressure(transformed absolute pressure)from high-pressure sensor satisfies the condi-
tion, take 1 minute periodic control like following graph.
(2) Control to prevent low pressure
1. If the measured pressure(transformed absolute pressure)from low-pressure sensor satisfies the condi-
Cooling operation Heating operation

A A
Comp.: off
Comp.: off
Comp.: decrease the step

Comp.: decrease the step B
B Outdoor fan: X/X
Outdoor fan: high/high
C Comp.: keep up the step C Comp.: keep up the step

Outdoor fan: high/high Outdoor fan: X/X
D D
Comp.: normal step
Comp.: normal step Outdoor fan: normal
Outdoor fan: normal


Comp.: normal step
Outdoor fan: normal Bypass valve: normal
Bypass valve: normal D
D
Comp.: keep up the step Comp.: keep up the step

Outdoor fan: X/X Outdoor fan: high/high
C bypass: on C bypass: on
Comp.: steps down Comp.: steps down

Outdoor fan: X/X Outdoor fan: high/high
B B
bypass: on bypass: on
Comp.: Off Comp.:off

A A
160 Outdoor Unit

Operation detail
(3) Control the discharge temperature

1. At the temperature of compressor discharge pipe >100°C, turn on the liquid injection valve.
Inverter compressor,
Comp.: off
A
115°C
Frequency: 10Hz down
B
110°C
C ICOF: keep up the frequency
100°C
D 95°C
Comp.: normal operation
ICOF: Inverter Compressor Operation Frequency
(4) DC peak control

1. Criterion for DC peak : if the fault signal from IPM(Intelligent power moudule) is occurred continuously for
1.8ms, then it is judged that
DC peak occurred.
2. As soon as DC peak occurs, inverter compressor is turned off immediately.
3. After inverter compressor turned off, 3minutes later if there is no DC peak signal, then restart compres-
sor.
(5) CT(cirremt tramsfprmer) sensor fault error
■ Detection for CT sensor fault
Criterion for CT sensor fault(which is judged from operation current for each frequency)
CT value
After Inverter Compressor Off CT > 1.5A for 10 seconds
(6) Over upper limit voltage and below lowest limit voltage
If the voltage of system input power exceed the upper limit(415V) of rating voltage(380 ~ 415V) by 15%
over(478V or more) or is below the lowest limit(380V) of rating voltage by 20%(304V or less) then the
compressor is turned off, and restart 3 minutes later.
(7) Controls for error occurrence
1. DC peak error
- Restart 3 minutes later.
- System down if the error occurs 3 or more times in an hour
2. CT sensor error
3. Sensor error
Outdoor Unit
- During the error signal is on, the compressor can not be turned on
4. Transmission error
- If the transmission with all of indoor unit is ceased, then compressor is turned off
- If the transmission between inverter PC board and control PC board in outdoor unit, then all of the
compressor is turned off.
Service Manual 161

Operation detail
3.2 CRUN1008T0
■ Compressor Control
(1) Compressor operation method
- Capacity control operation with the combination of Inverter compressor and
constant speed compressor
- It is not allowed to operate constant speed compressor only.
- In over capacity range, rising of frequency is restrained because of the heat exchanger capacity limit.
Inverter
Capacity of compressor
comp.:
120Hz
Inverter
comp.:
50Hz
Inverter
comp.:
120Hz
CSC
ON
Inverter
comp.:
30Hz
Inverte Comp. ON Inverte Comp. ON
+ Constant Speed Comp. OFF + Constant Speed Comp. ON
Capacity
(2) Compressor switching method(The method of constant speed compressor turn-on during Inverter
compressor operation)
After inverter compressor frequency is decreased to 40Hz, CSC turn on.
Inverter compressor frequency is increased to corresponding step
(3) Compressor Operation Step

Inverter Comp. Constant Inverter Comp. Constant Inverter Comp. Constant
Step Frequency Speed Comp. Step Frequency Speed Comp. Step Frequency Speed Comp.
0 0 off 16 60 off 32 50 on
1 30 off 17 62 off 33 55 on
2 32 off 18 64 off 34 60 on
3 34 off 19 66 off 35 65 on
4 36 off 20 68 off 36 70 on
5 38 off 21 70 off 37 75 on
6 40 off 22 75 off 38 80 on
7 42 off 23 80 off 39 85 on
8 44 off 24 85 off 40 90 on
9 46 off 25 90 off 41 95 on
10 48 off 26 95 off 42 100 on
11 50 off 27 100 off 43 105 on
12 52 off 28 105 off 44 110 on
13 54 off 29 110 off 45 115 on
14 56 off 30 115 off 46 120 on
15 58 off 31 120 off
162 Outdoor Unit

Operation detail
(4) Long piping Compensation

- The length of longest pipe from outdoor unit to indoor unit
- By the long pipe compensation, the decrease of capacity is suppressed
- Compensation control is done in 3 stages, short(standard), medium, long
(5) starting Method

- Total 7 minutes consumed for starting operation
- After 7 minutes, the compressor operates at target frequency step
• Stage A = Step 6(40Hz + Off)

• Stage B = determined by pressure
Consumed time 1 min 2 min 1 min 1 min 1 min 1 min
control
• Stage C = (Stage B + Step_base)/2 Comp. Stage Stage A Stage B Stage C Stage D Stage E Step_base
• Stage D = (Stage C + Step_base)/2

• Stage E = (Stage D + Step_base)/2
Stage A Stage B Stage C Stage D Stage E Step_base

Initial Starting
Mode
CSC
ON 70Hz
60Hz
40Hz 40Hz
1 2 3 4 5 6 7 min
Frequency down for constant speed compressor turn on
(6) Pressure Control(Stage B)

- In heating operation, ICOF is controlled for high pressure to reach base pressure(21bar).
- After stage A finished, ICOF is stepped up by 1.
High_Pressure > 21bar Step down
High_Pressure < 19 bar Step up
- In cooling operation, ICOF is controlled for low pressure to reach base pressure(6.6bar)
- After stage A finished, ICOF is stepped up by 1.
Low_Pressure < 6.1bar Step down
Low_Pressure > 7.1bar Step up
(7) Compressor control at power input
For 3 minutes after main power input, crank case heater is turned on, though ON signal is inputted from
indoor unit, compressor is not operated for 3 minutes.
After 3 minutes later from main power input, the compressor can be operated in case that following
Outdoor Unit
conditions are satisfied.

i) If outdoor air temperature > 5°C, then crank case heater is OFF and the compressor can be started
ii) If outdoor air temperature < 5°C, then crank case heater is ON continuously and 5 hours later the
compressor can be started.
For the operation of , though forced operation signal from indoor unit is in, those are all ignored and
displays ‘crank case heater operation’ at indoor unit.
Service Manual 163

Operation detail
■ Linear Expansion Valve(LEV) Control

(1) Control type
LEV for Indoor Unit

LEV
for Outdoor Unit On state Off state Thermo off state
indoor unit Indoor unit Indoor unit
At starting Fully open Base Pulse Fully Closed Fully Closed

Cooling
Feed back Feed back

Fully open Fully Closed Fully Closed
control control
At starting Base Pulse Base Pulse open Fully Closed
Heating
Feed back Feed back Feed back

open Fully Closed
control control control
Deicing Deicing Fully Open Fully Open Fully Open
■ Control of Outdoor Unit Fan

(1) After compressor start, the rotation speed of two fans is High/High for 1 minute, and then step control which
is considered the total capacity and indoor air temperature is executed.
(2) Steps of outdoor unit fan speed : 4 Steps
Step_Fan Left Right

4 High High
3 Low Low
2 High X
1 Low X
0 X X
(3) Determination of fan speed(Step_Fan)
Step_Fan Step_Fan
∑Qj ∑Qj
(Cooling) (Heating) ∑Qj : Total capacity summation of indoor units
7~12 3 7~12 3 (in Btu/h unit)
13~24 3 13~24 3
25~50 4 25~50 4
51~109 4 51~109 4
164 Outdoor Unit

Operation detail
■ Control of Reversing Valve

1. Initial state: keep up OFF state
2. Cooling and Deicing operation: OFF
Heating operation : ON
3. Change operation mode(Cooling → Heating): 3minutes restarting, reversing valve ON.
4. Compressor stop because of Thermo-OFF: keep up the present state.
■ Hot Gas Bypass Valve
(1) General control
1. At initial start of compressor: Turn on for 1 min. ( Inverter comp. frequency :40Hz + Constant speed
comp.: OFF)
2. After 5 seconds from compressor OFF: Turn on for 10 minutes
(This operation is resulted in equilibrium of pressure)
■ Deicing Operation
(1) The start condition of deicing operation
1. 10 minutes passed, since compressor starts
2. One of the two TOHEXP is continuously under the temperature of start condition of deicing operation
for 20 seconds or more.
■ Oil Return Operation

(1) Conditions for oil return operation
1. Compressor on time (normal operation) is 6 hours or more.
2. After deicing operation or oil return operation is finished, the cumulative time is reset
(2) Process of oil return operation
1. Change the Step to 35 (55Hz + Constant speed comp.: On).
2. In heating operation, oil return operation is performed in cooling mode by turning reversing valve off.
3. The method of handling reversing valve is the same that of same deicing operation
(3) Finishing oil return operation
1. After oil return operation carried out for 3 minutes, return to normal operation.
■ Safety Control
(1) Control to prevent high pressure
1. If the measured pressure(transformed absolute pressure)from high-pressure sensor satisfies the condi-
A A
Comp.: off
Comp.: off
Comp.: decrease the step

Comp.: decrease the step B
Outdoor Unit
B Outdoor fan: off/off

Outdoor fan: high/high
C Comp.: keep up the step C Comp.: keep up the step

Outdoor fan: high/high Outdoor fan: off/off
D D
Comp.: normal step
Outdoor fan: normal
Service Manual 165

Operation detail

Comp.: normal step Comp.: normal step
Outdoor fan: normal Outdoor fan: normal
D Bypass valve: normal D Bypass valve: normal
Comp.: keep up the step Comp.: keep up the step

Outdoor fan: off/off Outdoor fan : high/high
C Hot gas bypass: on C Hot gas bypass: on
Comp.: steps down Comp.: steps down
B Outdoor fan: off/off B Outdoor fan: high/high
Hot gas bypass: on Hot gas bypass: on
A Comp.: Off A Comp.:off
(3) Control the discharge temperature

1. At the temperature of compressor discharge pipe >115°C, turn on the liquid injection valve.
2. With the control of discharge temperature, the control of LEV in indoor unit carried out like following
graph.
Inverter compressor, Inverter compressor

Constant speed compressor (Indoor unit emergency control)
(the existing control)
Comp.: off
A
Liquid injection: off
(CSC,InvC)125°C Indoor LEV Control
C
Frequency: down
B 105°C
Liquid injection: on
(InvC)120°C D 95°C
C ICOF: keep up the Frequency
Comp.: normal step
Liquid injection: on
(CSC,InvC)115°C Indoor unit table: return to normal
D 95°C
Comp.: normal operation
Liquid injection: off
CSC: Constant Speed Compressor
InvC: Inverter Compressor
ICOF: Inverter Compressor Operation Frequency
166 Outdoor Unit

Operation detail
(4) DC peak control

1. Criterion for DC peak : if the fault signal from IPM Intelligent (Power Module) is occurred continuously
for 1.8ms, then it is judged that DC peak occurred.
2. After inverter compressor turned off, 3minutes later if there is no DC peak signal, then restart compres-
sor.
(5) CT(current transformer) sensor fault error
Detection for CT sensor fault
Criterion for CT sensor fault(which is judged from operation current for each frequency)
CT value
After Inverter Compressor Off CT > 1.5A for 10 seconds
(6) Over upper limit voltage and below lowest limit voltage
If the voltage of system input power exceed the upper limit(415V) of rating voltage(380 ~ 415V) by 15%
over(478V or more) or is below the lowest limit(380V) of rating voltage by 20%(304V or less) then the
compressor is turned off, and restart 3 minutes later.
(7) Controls for error occurrence

1. DC peak error
2. CT sensor error
- System down if the error occurs 3 or more times in an hour- Counter reset if the error
3. Sensor error
- During the error signal is on, the compressor can not be turned on
4. Transmission error
- If the transmission with all of indoor unit is ceased, then compressor is turned off
- If the transmission between inverter PC board and control PC board in outdoor unit, then all of the
compressor is turned off.
Outdoor Unit
Service Manual 167

CRUN158S0
W
L3
L1
D
L2
H
L4
Liquid side
3-way valve
L10 L11
Gas side
3-way valve
L7 L6 L8 L9
L5
Model CRUN458S0
Dimension
W mm 900
H mm 1225
D mm 370
L1 mm 460
L2 mm 45
L3 mm 410
L4 mm 1135
L5 mm 90
L6 mm 550
L7 mm 175
L8 mm 175
L9 mm 112
L10 mm 120
L11 mm 83
168 Outdoor Unit

CRUN1008T0
L6 L5 L4
L3
L2
D
L8
L7
H
L1
L10
L9
W D
Model No.
Dimension CRUN1008T0
W mm 1,246
H mm 1,519
D mm 700
L1 mm 1,237
L2 mm 677
L3 mm 650
Outdoor Unit
L4 mm 797
L5 mm 150
L6 mm 74
L7 mm 222
L8 mm 585
L9 mm 60
L10 mm 125
Service Manual 169

170
4way valve
Strainer
CRUN458S0
Air TH High pressure

High pressure
Refrigerant Cycle Diagram
Sensor
Outdoor Unit
S/W
HOT GAS BYPASS Low pressure
Sensor
Solenoid
valve
Oil separator
Strainer
Accumulator
Pipe TH Discharge
pipe TH Inverter
Compressor
LEV
5. Refrigerant Cycle Diagram
Strainer
Check LIQUID INJECTION
valve Dryer Solenoid Suction pipe TH
valve
Receiver Strainer
: Cooling
: Heating
High pressure
Sensor 4way valve
Air TH
CRUN1008T0
HOT GAS BYPASS
Low pressure
Sensor
Oil Oil separator

separator
High High
pressure pressure
S/W S/W
LEV Inverter Normal LEV
comp. comp.
Accumulator
LIQUID INJECTION
Receiver
: Solenoid valve : Strainer
: Check valve : Thermistor

Dryer
: Cooling
: Heating
Refrigerant Cycle Diagram
Service Manual 171

Outdoor Unit
Wiring Diagrams
6. Wiring diagrams
CRUN458S0
Connector Connector
SPEC Color Description SPEC Color Description
Number Number
CN1 POWER NT AC POWER SUPPLY CN13 DC-LINK RD DC LINK VOLTAGE DETECT
CN2 FAN(L) BL FAN MOTOR LOW SIDE CN14 IPM WH IPM CONTROL SIGNAL
CN3 FAN(H) RD FAN MOTOR HIGH SIDE CN15 P-SEN(L) BL LOW PRESSURE SENSOR
CN4 HEAT YL COMPRESSOR CRANK CASE HEATER CN16 P-SEN(H) RD HIGH PRESSURE SENSOR
CN5 4WAY BL 4WAY REVERSING VALVE CN17 S-PIPE/AIR BL SUCTION PIPE SENSOR/AIR SENSOR
CN6 H/GAS GR H/GAS VALVE CN18 D/C-PIPE RD DISCHARGE/CONDENSOR SENSOR
CN7 LIQ RD LIQUID INJECTION VALVE CN19 IPM-POW2 WH IPM DC POWER 2
CN8 H/P WH HIGH PRESSURE SWITCH CN20 IPM-POW1 WH IPM DC POWER 1
CN9 MAGNETIC BL MAGNETIC SWITCH CN21 CENTROL BL INTERNET & CENTRAL CONTROL
JIG1, 2 JIG WH JIG AC POWER CN22 LEV RD LINEAR EXPANSION VALVE
CN11 TO-INDOOR BL TRANSMISSION WITH INDOOR UNIT CN23 JEG NT JIG SIGNAL
CN12 PHASE NT 3 PHASE 4 LINE CHECK
172 Outdoor Unit

Wiring Diagrams
CRUN1008T0
CN10
Outdoor Unit
Service Manual 173

Wiring Diagrams
Control board
Connector SPEC Color Description Connector SPEC Color Description
Number Number
CN1 POWER 1(AC) NT AC POWER 1 CN16 LEV(B) RD LINEAR EXPANSION VALVE(B)
CN2 YL NOT USE CN17 MAGNETIC BL MAGNETIC SWITCH
CN3 TO-INDOOR WH TRANSMISSION WITH INDOOR CN18 FAN(L) BL FAN MOTOR (LEFT)
JIG1, 2 JIG WH JIG POWER CN19 FAN(R) RD FAN MOTOR (RIGHT)
CN5 WH NOT USE CN20 HEATER(I) YL INTERNET COMP. CRANK HEATER
CN6 SIGNAL RD TRANSMISSION WITH INVERTER BOARD CN21 HEATER(C) WH CONSTANT COMP. CRANK HEATER
CN7 CENTRAL CONTROL BL INTERNET CENTRAL CONTROL CN22 4WAY BL 4WAY REVERSING VALVE
CN8 WH NOT USE CN23 H/GAS GR HOT GAS VALVE
CN9 D-PIPE/S-PIPE(B) BL DISCHARGE/SUCTION PIPE TERMINALS CN24 LIQ(I) RD INVERTER LIQUID INJECTION VALVE
CON-PIPE(A) CONDENSER PIPE THERMISTOR CN25 LIQ(C) RD LIQUID INJECTION VALVE
CN11 CON-PIPE(B) WH CN27 POWER2(AC) NT INPUT POWER AC
OUT-AIR OUTDOOR AIR THERMISTOR CN28 JIG NT JIG SIGNAL
CN13 P-SEN(H) RD HIGH PRESSURE SENSOR
CN14 P-SEN(L) BL LOW PRESSURE SENSOR
CN15 LEV(A) RD LINEAR EXPANSION VALVE(A)
Inverter board
Connector Color
SPEC Color Description
Number
CN1 POWER YL AC POWER WH: white
CN2 DC-LINK RD DC LINK VOLTAGE DETECT RD: red
CN3 WRITE BL ON BOARD WRITING
CN4 H/P, M GRAY HIGH PRESSURE SWITCH MAGNETIC SWITCH
BL: blue
CN5 PHASE NT 3 PHASE DETECT YL: yellow
CN6 SIGNAL RD TRANSMISSION WITH CONTROL BOARD
GR: green
CN7 D-PIPE WH DISCHARGE PIPE THERMISTOR
CN10,11,12 IPM WH PWM SIGNAL NT: natural
CN13 IPM WH PWM CONTROL POWER
174 Outdoor Unit

437212
435512 561410-3 552114

561410-2 561411
CRUN458S0
165010-2 561410-1 554030-1
55211G
165010-1
546810-2
554030-2
552201
7. Exploded View
559010 447910
546810-1
435301 W52101-1 552201

552204-2 55211F-2
552116 566001
352112
437210
W52110-2 558511
554160
W0CZZ
553000
137212 548490-1 548490-3 W0FZZ

668711
55211F-1
548490-2 552203-1
W48602
552101
649950
552204-1 263230-1
435511
553000 263230-2
552203-2
430411
Exploded View
Service Manual 175

Outdoor Unit
Exploded View
CRUN1008T0
554031-3
W49800-4
435312-2
435312-1
435312-2
349940
554031-2
W49800-3
435512
554031-4
435312-1
137214 554031-1
559010
546810-1
W49800-2
W4810-2 546810-2
W4810-1
549610
437211
W4810-3 W49800-1
176 Outdoor Unit

Exploded View
CRUN1008T0
561140-3
649950 561140-2
566001 561140-1
W0CZZ
55211F-1
55211F-2
W0FS
352111-2
552117-2
552117-1 352111-3
668711-1
668711-2 561410
552116
435511
554160-1 165010-1
558490-2
165010-2
548490-3
554160-2
552115-2 55211G-2
553000-1 165010-1
552203-2 165010-2
W48602
561411-1 552203-1
W49800-5 55211G-1
561411-2
553000-2
W48602
548490-1
558490-4
552115-1
352111-1
263230-1
Outdoor Unit
430411
263230-2
263230-3
Service Manual 177

Replacement parts list
8. Replacement parts list

CRUN458S0
PART NO.
LOCATION NO. DESCRIPTION REMARK
CRUN458S0
548490-1 ACCUMULATOR ASSEMBLY(MECH) 4849A10014A R
447910 BARRIER ASSEMBLY, OUTDOOR 4791A20012B R
430411 BASE ASSEMBLY, WELD(OUTDOOR) 3041A20047D R
561411 COIL ASSEMBLY, EXPANSION 6141A20009A R
561410-1 COIL ASSEMBLY, REVERSING VALVE(H/GAS) 6421AR3209Y R
561410-2 COIL ASSEMBLY, REVERSING VALVE(LIQ(I)) 6421AR3209Z R
561410-3 COIL ASSEMBLY, REVERSING VALVE 6141AR3509Z R
554160 COMPRESSOR 5416A20030A R
649950 CONTROL BOX ASSMBLY, OUTDOOR 4995A10073A R
668711 PWB(PCB) ASSEMBLY, MAIN(OUTDOOR) 6871A20247A R
W0CZZ CAPACITOR,DRAWING 0CZZA90001E R
566001 SWITCH,MAGNET 6600B000048 R
W0FZZ FUSE,DRAWING 0FZZA90001A R
435511 COVER ASSY,CONTROL(OUTDOOR) 3551A30014X R
435512 COVER ASSY,TOP(OUTDOOR) 3550AP1213B R
558511 DRIER ASSY 5851A20002A R
559010 FAN ASSY,PROPELLER 1A00195B R
553000 HEATER,SUMP 2A00093W R
W48602 CLAMP,SPRING 4H01930A R
546810-1 MOTOR ASSY,OUTDOOR(UNDER) 4681A20013W R
546810-2 MOTOR ASSY,OUTDOOR(UPPER) 4681A20013Y R
437210 PANEL ASSY,FRONT 3720AP1212B R
435301 GRILLE,DISCHARGE 3530AP1225D R
437212 PANEL ASSY,REAR 3720AP1202C R
137213 PANEL,SIDE 3720AP1215B R
263230-1 THERMISTOR ASSY(S-PIPE/AIR) 6323A20011A R
263230-2 THERMISTOR ASSY(D-PIPE/COND.) 6323A20011B R
554030-1 CONDENSER ASSY,BENT 5403A20148C R
554030-2 CONDENSER ASSY,BENT 5403A20148F R
552114 TUBE ASSY,MENIFOLD(OUTDOOR) 5211A10285D R
55211G TUBE ASSY,EXPANSION 5211A10297A R
552116 TUBE ASSY,REVERSING 5211A20629A R
55211F-1 TUBE ASSY,SOLENOID 5211A10308A R
55211F-2 TUBE ASSY,SOLENOID 5211A10307A R
352112 TUBE ASSY,COUPLING 5211A10284A R
165010-1 SENSOR ASSY(LOW) 6501A20002A R
165010-2 SENSOR ASSY(HIGH) 6501A20003A R
552203-1 VALVE,SERVICE 2H01890Q R
552203-2 VALVE,SERVICE 2A00499C R
178 Outdoor Unit

CRUN1008T0
PART NO.
CRUN1008T0
435511 COVER(CONTROL BOX) 3550A20146A R
165010-1 SENSOR ASSEMBLY(HIGH) 6501A20004A R
165010-2 SENSOR ASSEMBLY(LOW) 6501A20004B R
263230-1 THERMISTOR ASSEMBLY(D-PIPE/S-PIPE) 6323A20011D R
263230-2 THERMISTOR ASSEMBLY(CON(A)/CON(B)/AIR) 6323A20009A R
263230-3 THERMISTOR ASSEMBLY(INVERTER D-PIPE) 6323A20001E R
349940 ORIFICE ASSEMBLY 4949A10005A R
352111-1 TUBE ASSEMBLY,CONNECTOR 5211A20744A R
430411 BASE ASSEMBLY,WELD[OUTDOOR] 3041AP2606Z R
435312-1 GRILLE ASSEMBLY,REAR(OUTDOOR) 3531A10197B R
435312-2 GRILLE ASSEMBLY,REAR(OUTDOOR) 3531A10197D R
435512 COVER 3550A10066C R
437211 PANEL ASSEMBLY,FRONT(OUTDOOR) 3721A10085A R
137214 PANEL ASSEMBLY,UPPER 3720A10075C R
546810-1 MOTOR ASSEMBLY,OUTDOOR(L) 4681A10014A R
546810-2 MOTOR ASSEMBLY,OUTDOOR(R) 4681A10014B R
548490-1 ACCUMULATOR ASSEMBLY(MECH) 4849A10038B R
549610 MOUNT ASSEMBLY,MOTOR(OUTDOOR) 4961A10005A R
552115-1 TUBE ASSEMBLY,MENIFOLD(OUTDOOR) (R) 5211A20554B R
552115-2 TUBE ASSEMBLY,MENIFOLD(OUTDOOR) (L) 5211A20554A R
552116 TUBE ASSEMBLY,REVERSING 5211A20585B R
552117-1 TUBE ASSEMBLY,SUCTION(OUTDOOR) 5211A20760A R
552117-2 TUBE ASSEMBLY,SUCTION(OUTDOOR) 5211A10315A R
55211F-1 TUBE ASSEMBLY,SOLENOIDE 5211A10286B R
55211F-2 TUBE ASSEMBLY,SOLENOIDE 5211A10281A R
55211G-1 TUBE ASSEMBLY,EXPANSION 5211A10294A R
55211G-2 TUBE ASSEMBLY,EXPANSION 5211A10283A R
552203-1 VALVE,SERVICE 2A00469J R
552203-2 VALVE,SERVICE 2A00468L R
553000-1 HEATER,SUMP(I) 2A00093U R
553000-2 HEATER,SUMP(C) 2A00093V R
554031-1 CONDENSER ASSEMBLY,BENT 5403A20085J R
554031-2 CONDENSER ASSEMBLY,BENT 5403A20085K R
554031-3 CONDENSER ASSEMBLY,BENT 5403A20085L R
Outdoor Unit
554031-4 CONDENSER ASSEMBLY,BENT 5403A20085M R

554160-1 COMPRESSOR 5416A20030B R
554160-2 COMPRESSOR 5416A20030C R
Service Manual 179

CRUN1008T0
PART NO.
CRUN1008T0
559910 FAN ASSEMBLY,PROPELLER 5901A10029A R
561410-1 COIL ASSEMBLY,SOLENOID(LIQ(I)) 6141A10001A R
561410-2 COIL ASSEMBLY,SOLENOID(LIQ(C)) 6141A10001B R
561410-3 COIL ASSEMBLY,SOLENOID(H/GAS) 6141A10001C R
561410 COIL ASSEMBLY,REVERSING VALVE 6141A20010A R
561411-1 COIL ASSEMBLY,EXPANSION 6141A20009C R
561411-2 COIL ASSEMBLY,EXPANSION 6141A20009E R
566001 SWITCH,MAGNET 2A01031H R
649950 CONTROL BOX ASSEMBLY,OUTDOOR 4995A10069A R
668711-1 PWB(PCB) ASSEMBLY,MAIN(OUTDOOR) 6871A10076A R
668711-2 PWB(PCB) ASSEMBLY,MAIN(OUTDOOR) 6871A10075A R
W4810-1 BRACKET ASSEMBLY 4811A20028A R
W4810-2 BRACKET 4810A20114A R
W4810-3 BRACKET 4810A20116B R
W49800-1 SUPPORTER 4980A20053B R
W49800-5 SUPPORTER 4980AP2621C R
WOCZZ CAPACITOR,DRAWING 0CZZA90001E R
WOFS FUSE,DRAWING 0FZZA90001A R
W48602 CLAMP,SPRING 4H01930A R
180 Outdoor Unit

Control Devices
Control Devices
and Functions
Control Devices and
Functions
Service Manual 181

Control Device and Functions
1. Control Devices and Function

1.1 Wired Remote Control .......................................................183
1.2 Wireless Remote Control ..................................................184
1.3 Simple Central Control......................................................185
1.4 Group Control with wired Remote Control......................191
2. Deluxe Central Control

2.1 Introduction........................................................................192
3. Installation
3.1 Transmission between indoor units and outdoor unit .......198
3.2 Addressing of indoor units...............................................200
3.3 Group number setting for indoor units............................203
3.4 Optional operation.............................................................206
182 Outdoor Unit

Control Devices
Control Devices
and Functions
Installation
1. Control Devices and Function
1.1 Wired Remote Control
1.1.1 Appearance and Functions
Appearance Functions (Button Descriptions)
Ceiling Mounted Cassette Type: No. Name Function

CRNN -TC/TD/TE 1 Operation display Displays the operation conditions.
Convertible Type: 2 On/Off
Operation starts when this button is pressed, and
CRNN -TB stops when the button is pressed again.
Used to set the temperature when the desired
3 Set Temperature
temperature is obtained.
AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION
Room Temp
HI AUTO Heater Preheat
1 Used to circulate room air without cooling or
MED JET Defrost Humidify 4 FAN Operation
LO Filter Out door heating.
Time ZONE 1 2 3 4
Timer
On Off
Operation unit Program set
5 Fan Speed Used to set the desired fan speed
Set no. Time 01 03 05 07 09 11 13 15 17 19 21 23
3 Operation Mode
6 Used to select the operation mode.
Selection
16 2 7 Auto Swing Used to swing up and down.
9 5 Room Temperature
10
Timer Cancel 8 Used to check the room temperature.
6 Checking
11 Program Week Holiday
12 4 9 Timer Cancel Used to cancel the timer.
Plasma
13 Set/Clr
7 Used to set the timer when the desired time is
14 10 Timer Set
Hour Min RESET 8 obtained.
15 11 Week Used to set a day of the week
17
12 Program Used to set the weekly timer.
13 Holiday Used to set a holiday of the week.
Used to set the time of the day and change the
14 Time Set
time in weekly timer Function.
15 Set and Clear Used to set and clear the weekly timer.
16 Jet Cool Used to select jet cool mode.
Used to set the current time and clear the setting
17 Reset
time.
Ceiling Concealed Duct Type: No. Name Function

CRNN –BH/BG/BE/BN/BJ 1 Operation display Displays the operation conditions.
Floor Standing Type: Operation starts when this button is pressed, and
2 On/Off
CRNN –CA/CB/CC/CD stops when the button is pressed again.
Used to set the temperature when the desired
3 Set Temperature
temperature is obtained.
Used to circulate room air without cooling or
4 FAN Operation
heating.
5 Fan Speed Used to set the desired fan speed
Room Temp
1 Operation Mode
MED JET Defrost Humidify 6 Used to select the operation mode.
LO Filter Out door Selection
Time ZONE 1 2 3 4
Timer Operation unit Program set Used to set the timer when the desired time is
On Off
7 Timer Set
Set no. Time 01 03 05 07 09 11 13 15 17 19 21 23
obtained.
3
8 Timer Cancel Used to cancel the timer.
16 2
9 Week Used to set a day of the week
8 5
Timer Cancel 10 Program Used to set the weekly timer.
7
9 6
Program Week Holiday
4 11 Holiday Used to set a holiday of the week.
10
11 Used to set the time of the day and change the
12
SET/CLR
12 Time Set
time in weekly timer Function.
Hour Min RESET 14
13 15 13 Set and Clear Used to set and clear the weekly timer.
Room Temperature
14 Used to check the room temperature.
Checking
Used to set the current time and clear the setting
15 Reset
time.
Used to take the signal from wireless remote
16 Signal Receptor
control
Service Manual 183

Control Devices
1.2 Wireless Remote Control

1.2.1 Appearance and Functions
Appearance Functions (Button Descriptions)
Mounted Type: CRNN -SR/ST No. Name Function

Art Cool Type: CRNN -SP/SV/SU Operation starts when this button is pressed and
1 START/STOP
stops when the button is pressed again.
OPERATION MODE
2 Used to select the operation mode.
Signal transmitter SELECTION
ROOM
3 TEMPERATURE Used to select the room temperature.
SETTING
FAN SPEED Used to select fan speed in four steps (low,
4
SELECTOR medium, high, or CHAOS.)
Used to start or stop the speed cooling/heating.
JET COOL
5 (Speedcooling/heating operates super high fan
(JET HEAT: CRNN-SP only)
speed in cooling mode.)
5 6 Used to stop or start louver movement and set
6 CHAOS SWING
the desired up/down airflow direction.
4 1
Used to set the time of starting and stopping
3 7 ON/OFF TIMER
ON OFF operation.
7 10
8 TIME SETTING Used to adjust the time.
8 11
SET CANCEL
9 12 Used to set the timer when the desired time is
9 TIMER SET/CANCEL
2 13 obtained and to cancel the Timer operation.
10 SLEEP MODE AUTO Used to set Sleep Mode Auto operation.
Used to circulate the room air without cooling or

11 AIR CIRCULATION
heating (turns indoor fan on/off).
ROOM
12 TEMPERATURE Used to check the room temperature.
CHECKING
Used prior to resetting time or after replacing
13 RESET
batteries.
184 Outdoor Unit

Control Devices
Control Devices
and Functions
1.3 Simple Central Control
1.3.1 Features
• Easy operation button.
• Independent operation for 16 indoor units each.
• Simultaneous turn ON/OFF for all of indoor units connected.
• Easy change operation mode to cooling or heating
• Set and clear lock-mode for each indoor unit
• Simultaneously set and clear lock-mode for all of indoor units
connected.
• Display function for all of indoor units connected.
1.3.2 Term of Each part and Function
On/Off display LED Individual On/Off button

(TOTAL 16EA) • Control ON/OFF of a unit.
• On pressing individual on/off
button, display the present
operation state.
-Operation : green.
-Stop : off
-Error mode : blinking
Power display LED

• Indicate the state of DC
Power supply in central
controller unit. TOTAL Off button
- On : red(Heating), green(Cooling) • Stop all linked units sequentially.
- Off : no signal
- Error mode : blinking with red color
TOTAL On button
• Operate all linked units sequentially.
Service Manual 185

Control Devices
1.3.3 Electrical wiring

■ PICTORIAL VIEW OF THE CONNECTION
Outdoor
Outdoor unit
unit
SUB : SUB PCB
MAIN PCB
T.B : TERMINAL BLOCK
SUB T.B
Control Box
Earth Shield Line
C
D
VCC
GND
Control
A
B To Indoor unit
JIG2
JIG1
MAIN PCB
T.B
C C
SUB PCB D D CENTRAL
VCC VCC CONTROL
GND GND UNIT
A A
B B
To Indoor
Units
• Special purcharse: Central control, Sub(485-Gateway)
■ ONE SIMPLE CENTRAL CONTROL CONNECTION
001 002 003 004 005 006 007 008

MAIN PCB
<Group Number 0 >
C C
D D Vcc GND C D
VCC VCC
SUB GND GND
Central
A A To Indoor control
B B Units Unit 1 Vcc GND C D
Outdoor
Outdoor unit
unit CN-POWER
GND
CN-COM B
CN-POWER CN-COM A
S1 S2 S4
L
A, B(Communication Line) LED2
LED3 LED4
IC1P S5 S6 S3
+ + + +
+
LED5 LED7 LED8 TX1
S9 S10 S11 S12

+ + +
LED9 LED10 LED11 LED12
S14 S15 S16

+ + + +
Indoor unit LED13 LED14 LED15

PWB:6870A10001A
LED16
Group Number 0 +
ASM:6711A20005E
S15 S18
LED17 ON KSDO4H
Master Mode L1 2 3
S19
4
All the connections are to be done as shown above.

A and B are the communication lines for the indoor and
C and D are the communication lines for the Central Control.
Use two shield lines for C/D connecting line.(Earth the shield line)
186 Outdoor Unit

Control Devices
Control Devices
and Functions
■ 2 OR MORE SIMPLE CENTRAL CONTROL CONNECTION
Indoor unit
001 002 003 004 005 ... 014 015 016
MAIN PCB
<Group Number 0>
C C
D D Vcc GND C D
VCC VCC
SUB GND GND
Central
A A
B B
To Indoor
Units
control
Unit 1 Master DIP SWITCH
Outdoor unit
The connection of Master and Slave
SUB : SUB PCB

T.B : TERMINAL BLOCK Indoor unit
101 102 103 104 105 ... 115 116
MAIN PCB
<Group Number 1>
C C
D D Vcc GND C D
VCC VCC
SUB GND GND
Central
A A To Indoor control
B B Units Unit 1
Slave DIP SWITCH
Outdoor unit
Note
1. Adhere the 485 SUB PCB(For connecting central control) to the Control Box.
2. Connect the 485 SUB PCB to central control.
3. In the case of connecting two more than central control, set the Master/Slave mode 001
and then connect each communication lines(C,D) <Refer to above fig>.
*Special purcharse: Central control(P/No.:4995A20105F), Group No.
Sub PCB(P/No.:4995A20105G) Indoor No.
* It can be added to 15 Central controls for the slave control.
1.3.4 Indoor unit setting method

The indoor unit PCB has 2 rotary switches. One is for the Group Number setting and another is for Room
Number Setting. The group number on the Central Control rotary switch and on the rotary switch of Indoor
Unit PCB should match exactly.
Like: Group Number 0 on the Central Control = Group Number 0 on all Indoor units to be connected to Group
Number 0.
But the Room Number switch on Central control is one increment of the rotary switch
number on the Indoor PCB.
Like: Rotary switch number 0 on the indoor unit PCB means Room number 1 on the
central control.
Rotary_low
Rotary_low Indoor unit
Indoor unit number 1 No. setting
On central control
Rotary_high
Rotary_high Group unit
Group number 0 No. setting
On central control
Service Manual 187

Control Devices
1.3.5 Test run method

1. Set the wiring of system and indoor unit.
2. Apply power to the setting.
3. Do auto addressing to the outdoor unit.
4. After addressing then initialize the central controller(Check up Dip Swtich ON('1')).
• Cooling: Setting basically(Total On + Total Off + 4 key)
• Heating: Total On + Total Off + 8 key ➡ Red power lamp 'On'
6. Check up On/Off with a related indoor key pressing.
1.3.6 Installation
■ CAUTIONS
Do not install in this area Keep in mind

• Don’t install near elevator, computer, auto- • Don’t operate with wet hands.
matic door. (High noise area).
• Don’t install near high moisture & high oscilla-

tion area.
• Don’t pull the connected wire.
• Don’t install near direct sunlight as heat

source.
188 Outdoor Unit

Control Devices
Control Devices
and Functions
■ INSTALLATION ORDER
1. Remove upper & lower case. 2. Fixate screw in the holes of the 3. For Dip switch, and Rotary
case bottom. switch setting, refer to the page
“How to Install”.
4. For wiring connection, refer page 5. Adjust the upper case in accor- 6. Check the operation by supply-
“Installation Procedure” dance with back case while ing the power.
assembling as shown in the fig-
ure.
■ LINK OF CONNECTING WIRE

1. First, separate the front case from rear case of controller, connect terminal GND
C, D,Vcc, GND on PCB referring to the following table. Vcc D
Maximum length of connecting wire C
• Between controller and outdoor unit : 220m(25Ω )

• Between controllers : 220m(25Ω )
Out door unit Terminal Block Wire Color Central Controller Terminal
GND BLUE Vcc
Vcc Red GND
C Brown C
D Yellow D
2. After attaching the supplied wire to terminal, link the connecting wire.
If necessary, Cut the indicated part of front case to draw the lead wire.
Service Manual 189

Control Devices
■. ROTARY SWITCH SETTING(INSTALLATION FOR 2 OR MORE SIMPLE CENTRAL CONTROL)

The setting of Group Number in the Central Control is done by the rotary switch as shown in the figure below.
It is possible to set 0~15 Group(Total 16 Groups). All the numbers on the rotary switch represent the different
Group Numbers. By changing the knob we can set rotary switch to the group number we want to control. The
above fig. Shows the control of group number “0”. Similarly we can control all the 16 Groups.
■. DIP SWITCH SETTING(INSTALLATION FOR 2 OR MORE SIMPLE CENTRAL CONTROL)

CAUTION
Dip switch is now used only for the setting of master or slave mode.( In the case of two more
than central controls.)
Set one to Master, the others to slave.
Master Mode
Rotary Switch
Dip Switch
ON
OFF Slave Mode
■. ACCEASSORY PARTS
Central control and sub PCB(with wire ass'y) should be purchased as optional.
Central Control(1EA) Sub PCB Wire Assy 1

6871A20295A
Screw(4EA) Wire Assy 2 Wire Assy 3
190 Outdoor Unit

Control Devices
Control Devices
and Functions
1.4 Group Control with Wired Remote Control
It operates maximum 16 Units by only one Wired Remote Control, and each Unit starts sequentially to
prevent overcurrent.
Main PCB
Indoor Unit 1 Indoor Unit 2 Indoor Unit 16
Terminal(Local Supply) Terminal(Local Supply) Terminal(Local Supply)
Block Block Block
Connector Connector Connector
RED(12V) RED(12V)
Main PCB Main PCB Main PCB
YL(SIGNAL)
BR(GND)
YL(SIGNAL)
BR(GND) #1
YL(SIGNAL)
BR(GND)
YL(SIGNAL)
BR(GND) #2 .... YL(SIGNAL)
BR(GND)
YL(SIGNAL)
BR(GND) #16
Connecting Cable(Local Supply)

....

Room Temp
MED JET Defrost Humidify
LO Filter Out door
Time ZONE 1 2 3 4
Timer Operation unit Program set
On Off
Set no. Time 01 03 05 07 09 11 13 15 17 19 21 23
Wired Remote Controller

(Standard)
Single
Slide Switch2 Group
• Using the supplied Wired Remote Control, wire them
Remote like above.
Controller
PCB • Move slide switch 2 to "Group" position.
• Ensure that the color of wire.
CAUTION
• Be careful not to exchange the color of wires.

• The maximum length of connecting wire should be below 200m(25Ω) on connecting each units.
• Use a wire more than 0.5mm2
Service Manual 191

Deluxe Central Control
Installation
2. Deluxe Central Control
2.1 Introlduction
2.1.1 Summary
Deluxe Central control is a product available for individual and integrated monitoring and control of maximum
256 of Multi V air conditioner systems. Specially operation status of the individual air conditioner can be particu-
larly checked. Individual or simultaneous operation of the air conditioner, operation mode, wind quantity, user
locking and temperature setup are also available.
Specially for this system, installation is simple and user's environment is excellent. Central control is available
by a simple manipulation. In addition, this system have the self-battery built-in and can stably operate in spite of
outside disturbance such as temporary power failure. This system has no need of additional peripheral equip-
ment like UPS (Undisturbed Power System) and AVR to be purchased for stability when composing the existing
PC central control system, and has so attractive advantage in installation costs.
Using the Deluxe Central control enables the management room to setup lock of each air conditioner and pre-
vent indoor control of the individual air conditioner and restrain the necessary use. In case of releasing the lock,
you may control the system by using the wire/wireless remote control at the place where the individual air condi-
tioner is installed.
Setup of a weekly schedule is available and detailed schedule of the individual air conditioner can be easily
setup through the GUI. Details of schedule setup can be immediately checked with a graph. This system is a
product to meet energy saving and convenience at the same time at a place like a school by using this schedule
function.
Defending on installation environment, location and conditions of use, you can setup groups. With this setup,
more efficient operation at the center is available. Setup without requiring other equipment is available by using
the GUI and change by the consumer is also available after installation.
You can reduce development time to configure special system upon the request by the consumer and conve-
niently this system by using the touch panel.
Where needs from a new customer occur or where purchase of additional air conditioner is done, the Deluxe
Central control can be smoothly installed.
Deluxe Outdoor Unit Indoor Indoor Indoor

Central control CNU Unit #1 Unit #2 Unit #3
Indoor ……… Indoor

Unit #240 Unit #256
Figure 1) Overview of LG MultiV Central Control System
192 Outdoor Unit

Control Devices
and Functions
2.1.2 Major Characteristics
Figure 2) Deluxe Central control
1. Individual/Integrated Operation/Monitoring
■ You can identify operation status of the air conditioner, operation mode, wind quantity, wind direction, locking,
temperature setting and error, etc by selecting the installed air conditioner through individual selection, group
selection or all selection. Individual setup and operation of the detailed functions are available. Therefore, the
manage can use a central control only with the Deluxe Central control installed at the control room at a build-
ing where a number of air conditioner are installed.
2. Group Management
■ Grouping management of the installed air conditioners is available. Thank to such group setup, separation by
nature, location and size of each air conditioner enables convenient use. In addition, allotment of respective
name to the setup group allows further intuitive management.
3. Self-diagnosis Function
■ The air conditioner installed can self-diagnosed its error status and then transmits the result to the central
control. Therefore, a rapid countermeasure against failure of the air conditioner allows easy management and
increases the use life of air conditioner.
4. Semi-permanent Life / Convenient Maintenance

■ Since the Deluxe Central control is designed for the semi-permanent use, this system can be used semi-per-
manently after installation differently from the existing PC or a large of central control system requiring a con-
tinuous management due to the life of peripheral and other PC.
5. Management Costs Down

■ In absence of the Central Control System, the manager controlled a number of air conditioners respectively,
in addition, even if management was done at the center, there is only function of on/off management at best
and thus 2 or 3 building managers were actually required. However, manipulation of all functions can be now
done at a control room for the Deluxe Central control and so a manager can easily control all air conditioners.
Automatic operation is also allowed without a manager if using schedule function.
Service Manual 193

6. Convenient GUI / Touch Screen

■ Not requires special education for using the Deluxe Central control, conveniently used only by pressing the
buttons on the screen, and its function can be understood with intuitive pictogram. Especially schedule setting
is done by simply dragging the screen as patented technology differently from the existing system requiring to
press the button by more than average 30 times to enter a schedule.
7. Schedule Automatic Operation Management / Energy Saving

■ For the Schedule Automatic Operation, weekly setting is available. Enlisting of the schedule exception pro-
cessing schedule (national holiday) is done for a year prevents the air conditioner from an unnecessary oper-
ation of air conditioner, allowing the system to be controlled at the center so that it can be only used for a nec-
essary case and enabling to obtain excellent energy savin effect. Use of this function if there is a fixed sched-
ule for elementary schoo, middle school, high school and college or university will get excellent effect.
8. Power Failure Backup Function / Powerful Stability

■ For the existing Central Control System, additional purchase of expensive UPS equipment in provision for a
temporary power failure must be done in the past but for the Deluxe Central control, since the self-power fail-
ure compensation battery is built-in, power is automatically converted by maximum 2 hours. Therefore, there
is almost no malfunction due to a temporary power failure because stable operation is available.
9. Mobility
■ A wireless radio system may be installed at the Deluxe Central control. You may control the system while
directly going around the building with the wireless radio system and its self-battery function (100 m where
there is no obstacle).
10. Convenient Installation

■ This system may be freely fixed to the wall surface with its small size, light weight and thin thickness and
stood up on the desk by using a dedicated cradle. It is not almost subject to spatial restriction in installation
space and location since this system communicates with on the basis of the I-GW and the Ethernet.
11. Stable Date Storage/Backup

■ Setup information is saved as it is even if no power is supplied since all date are saved in the built-in flash
memory.
12. Scalability
■ Scalability of the system is easy in case of additionally purchasing equipment since scalable slot such as
USB, Serial (RS-232c), PCMCIA, CF Type is prepared. This system is designed considering sufficient scala-
bility in provision for special request by the customer.
13. Upgrade
■ Additional installation of a new program is available via the CF memory card and the existing program can be
upgraded to a new program. Using such upgrade function always enables to construct a modern type of
Central Control System.
194 Outdoor Unit

Control Devices
and Functions
Figure 3) Deluxe Central control
Table 1) Comparison Between Central control Characteristics
Internet Central control PC Central control Deluxe

Central control
Dedicate PC Non-required Required Non-required
Configuration User S/W User S/W, Engine S/W Main Body of Web Pad
Deluxe Central control
Position of program Download to i-GW Installation Built-in
Max. installation set 256 sets (Less than 128 sets 256 sets1) 256 sets
numbers recommended)
Remote control Available - -
Control & monitoring Available Available Available
Schedule management - Available Available
System setup Available(Configure file Available Available
modification)
System monitoring(overview) - Available Available
User’s lock Available Available Available

Upgrade Available Available Available
Touch screen - - Built-in
Built-in Flash DB (backup) - - Built-in
Wireless LAN (movable) - - Available (option)
Installation on wall - - Available
Non-interruption device - Separately add Built-in
Requirements Browser supporting JAVA 2)
JVM (provided by MS) -
Life Semi-permanent Peripheral devices & PC life Semi-permanent
1) For the PC central control, installation set numbers may respond up to 1024 sets upon user’s request.
2) JVM (Java Virtual Machine) is basically installed at the Windows but some versions of Window XP may be
manually installed.
Service Manual 195

2.1.3 Major Function of Deluxe Central control
[ System Control ]
To check general monitor function of the air con central control
system such as selection of group and air conditioner, air
conditioner control monitor function etc.
[ System Monitor ]
To check the current actual time status of the whole of air

conditioner.
PCS-W501A0
[ System Set-up ]
To manage the air conditioner through grouping and record setup

of group and installation position, etc.
PCS-W501A0
[ Time Schedule ]
Setup of a weekly schedule for all, group and individual air

conditioner enables operation of the system. Processing through
enlist of extra schedule for a year is available.
PCS-W502A0
196 Outdoor Unit

Control Devices
and Functions
2.1.4 System Configuration
Scenario 1 : In case of not using Internet access function
B part A part Product

Control System Multi-V
Interface
Delux Central CNU

Control PI485
PI485
Cross UTP Cable

(Cross LAN Cable)
RS-485 Cable
PI485
PI485
Main Specifications
1. Control System
- Centralized control of of maximum 256 indoor units
- Simple Touch PAD method
- GUI setting considering convenience of use
- Power failure compensation with independent Battery Built-in (Max. 2 hours)
2. CNU
- Combination of maximum 8 outside units
- 485 to Ethernet Converter Built-in
3. PI485
- 1 pcs per outdoor units (control of 8 outdoor units per bridge)
Note: - GUI(Graphic User Interface) may be changed without any notice, for improvement or options.
Service Manual 197

Installation
3. Installation
Installation
3.1 Transmission between indoor units and outdoor unit
1) Transmission cable
• Types : shielding wire CVVS or CPEVS
• Diameter : over 0.75mm2
• Insulation material : PVC
• Maximum allowable temperature: 60°C
• Maximum allowable line length: under 300m
2) Remote control cable
• Types : 3-core cable
• Diameter : 0.5mm2
• Maximum length: 100m(over 50m, use over 0.5m2)
3) Simple central control cable
• Types : 4-core cable
• Diameter : over 0.75mm2
• Insulation material : PVC
• Maximum allowable line length: under 100m
4) Separation of transmission and power lines
• If transmission and power lines are run alongside each other then here is a strong likelihood of operational
faults developing due to interference in the signal wiring caused by electrostatic and electromagnetic cou-
pling.
The tables below indicates our recommendation as to appropriate spacing of transmission and power lines
where these are to be run side by side
Current capacity of power line Spacing

10A 300mm
50A 500mm
100V or more
100A 1000mm
100A or more 1500mm
Note:
1. The figures are based on assumed length of parallel cabling up to 100m. For length in excess of 100m
the figures will have to be recalculated in direct proportion to the additional length of line involved.
2. If the power supply waveform continues to exhibit some distortion the recommended spacing in the
table should be increased.
• If the lines are laid inside conduits then the following point must also be taken into account when grouping
various lines together for introduction into the conduits
- power lines(including power supply to air conditioner) and signal lines must not be laid inside the same
- In the same way, when grouping the lines power and signal lines should not be bunched together.
CAUTION
• Have the indoor and outdoor units both been earthed?
■ If apparatus is not properly earthed then there is always a risk of electric shocks, the earthing of the
apparatus must be carried out by a qualified person.
198 Outdoor Unit

Installation
Control Devices
and Functions
Example connection of transmission wire
Power supply switch : 3 Phase power line

(Switch/Fuse) : Single phase power line
Power supply : Transmission line(2 wire)
3 phase 50Hz
380~415V
Power supply
1 phase 50Hz
220~240V
Outdoor Unit Control Box

TB6
Central controller Indoor unit
D C Vcc GND A B
3 4 3 4 3 4
Service Manual 199

Installation
3.2 Addressing of indoor units

• The address of indoor units would be set by Automatic addressing
- CRUN1008T0
➀ Press the switch(SW02M) of outdoor unit for 5 seconds
➁ 7-segment of Main PCB in outdoor unit : displays "88"
➂ 2~3 minutes passed after ➁, the address of each indoor unit is displayed at each wired remote controller
or display device of each indoor unit.
- CRUN458S0
➀ Press the switch(SW01M) of outdoor unit for 5 seconds
➁ LED01C is ON.
➂ 2~3 minutes passed after ➁, the address of each indoor unit is displayed at each wired remote controller
or display device of each indoor unit.
Caution
• In the Art Cool type (CRNN-SP, CRNN-SV) indoor unit, the address is not displayed after
automatic addressing.
Warning
• If the PCB in indoor unit is replaced with new PCB for service, then the Automatic
addressing should be executed.
CRUN1008T0 Control board
LED01K
7-SEG
SW01M
SW02M
AUTO ADDRESS
SW03M
SW04M
CRUN458S0 Control board
SW02M
LED01C
SW01M
AUTO
ADDRESS
200 Outdoor Unit

Installation
Control Devices
and Functions
The procedure of automatic addressing(CRUN1008T0)
Service Manual 201

Installation
The procedure of automatic addressing(CRUN458S0)
1 minutes
Stop pressing SW01M
202 Outdoor Unit

Installation
Control Devices
and Functions
3.3 Group number setting for indoor units
3.3.1 Process fot Group Number Setting

➀ Confirm the power of whole system(indoor unit, outdoor unit) is OFF, otherwise turn off.
➁ The transmission lines connected to C, D of simple central controller should be connected to C,D terminal port
for central control of outdoor unit with care for their polarity (C ➔ C, D ➔ D)
➂ DC power line(12V) and ground line should be connected to terminal block of adjacent indoor unit
➃ Set group number with increasing the rotary switch From 00 to 7F in orderly manner (if it is desired to control
several indoor units as a group, each group control is possible by group ID rotary switch setting from 0 to 7)
➄ The whole system power turn on.
Terminal block of outdoor unit
Indoor unit Central controller

A B 12V GND C D
GND D
12V C
Simple central Controller
• Group number of each indoor unit is set with rotary switch of control PCB in each indoor unit
• Before power is supplied the rotary switch for simple central controller on the indoor unit PCB should be set
• ID Mapping of Rotary Switch is following table
Each rotary switch setting in Indoor

Simple central controller recognition
SW01M(GROUP) SW02M(UNIT)
0 0~F 1st Group, 0~F Unit
1 0~F 2ndGroup, 0~F Unit
2 0~F 3rd Group, 0~F Unit
3 0~F 4th Group, 0~F Unit
Service Manual 203

Installation
Wiring Diagram for Simple Central Control
Outdoor Unit 1
Control box
001 002 003 004 005 006 007 008
Control Board
< Group Number 0 >

C C
Vcc GND C D
Sub D D
PCB G G Central
V V
Control DIP
A A
B B
Unit 1 Master SWITCH
TB6
For Master the First switch of DIP switch should be ON and the
other three switches can be On or Off (Don ’t Care Condition)
The connection of Master and Slave
Outdoor Unit 2
Control box
101 102 103 104 105 106 107 108
Control Board
< Group Number 1 >

C C
Vcc GND C D
Sub D D
PCB G G Central
V V
Control
A A DIP
B B
Unit 2
Slave SWITCH
TB6
For Slave the First switch of DIP switch should be OFF and the
other three switches can be On or Off (Don ’t Care Condition)
❑ PC Borad of Simple Cental Control
Vcc GND C D
Group Number Setting S/W
Master /Slave Mode Select S/W
204 Outdoor Unit

Installation
Control Devices
and Functions
Position of rotary switch on the indoor unit
Cassette, Duct, Convertible type indoor unit

Group ID rotary S/W
Indoor unit ID rotary S/W
Wall Mounted type indoor unit
Group ID rotary S/W
Artcool type indoor unit
Group ID S/W
Service Manual 205

Installation
3.4 Optional operation
1) Two Thermistor System

(1) Open the rear cover of the wired remote-controller to set the mode.
(2) Select one of three selectable modes as follows.
• Position 1:
The room temperature is controlled by the thermistor of the main body.
• Position 2:
The room themperature is controlled by the thermistor of the wired remote-controller, control the
temperature according to the position of wired remote-controller.
• Position 3:
The room temperature is controlled by lower temperature between the temperature of main body and of
remote-controller sensor.
(3) Move the slide switch to set position.
Room Temp. sensor

Slide switch for 2 Thermistor
TH R13H R12H OP5R16H OP4
CO1H
R15H
OP2 OP1
R14H OP3 R19H
SW TH R11H
Position 2 REMO REMO

MAIN OP7
2TH R18H
Position 1 MAIN R17H
OP6
Position 3 2TH LO
C070
STAND
HI R03S
R04S
R01S
R02S
SW HIGH
Slide switch for ceiling height
(4) Close the rear cover and check if it works normally.
CAUTION
• Select the position after counselling with a customer.

• In case of cooling mode, room temperature is controlled by the main body sensor.
• To control the room temperature by a wired remote controller, install controller(room temperature sensor)
to sense the temperature more accurately.
• Maunfactured in the position 3.
206 Outdoor Unit

Installation
Control Devices
and Functions
2) Adjusting air volume to the height of ceiling
You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the com-
fortable atmosphere to consumers.
Procedure
1. Choose the selectable position in the table after measuring the height of ceiling.
Ceiling height Mode of slide switch Change of air volume Remark

more than 4.0m High Ceiling Increasing
Maunfactured in stan-
3.2~4.0m Standard -
dard mode
less than 3.2m Low Ceiling Decreasing
2. In the case of changing the height as "high" or "low", open the rear cover of the wired remote-controller.
3. Move the slide switch to the set position.
Slide switch for 2 Thermistor
TH R13H R12H OP5R16H OP4

CO1H
R15H
Low ceiling Lo R14H OP3
SW TH
OP2 OP1
R19H
R11H
Standard STAND
(Default) REMO
MAIN
2TH OP7
High Ceiling Hi R17H

R18H
OP6
LO
C070
STAND
HI R03S
R04S
R01S
Slide switch for ceiling height

R02S
SW HIGH
4. Close the rear cover and check if it works nomally.
Service Manual 207

208 Trouble Shooting Guide
Trouble Shooting
Guide
Trouble shooting guide
Service Manual 209

Trouble shooting guide
1. The phenomena from main component failure ............................211

2. Checking Method for Key Components
2.1 Compressor ............................................................................212
2.2 Linear Expansion Valve ............................................................213
2.3 3Phase Bridge Diode ..............................................................216
2.4 IPM(Integrated Power Module) ................................................217
2.5 Others ...................................................................................218
3. Self-diagnosis function ...............................................................219

The phenomena from main component failure
1. The phenomena from main component failure

The phenomena from main component failure
Component Phenomenon Cause Check method and Trouble shooting
Trouble Shooting
Not operating Motor insulation broken Check resistance between terminals and
chassis
Guide
Strainer locking Service necessary
Compressor Oil shortage Open drain cock and check oil
Stop during running Motor insulation failure Check resistance between terminals and
chassis
Loud noise during Phase sequence fault Check wiring(R, S, T) sequence, or lnter
running change last two phase connection.
High pressure error Motor failure, Check the outdoor fan operation after being
Outdoor at cooling Bad ventilation around turned the outdoor unit off for sme time.
fan outdoor heat exchanger Remove obstacles around the outdoor unit
Heating failure, fre- Bad connector contact Check connector

quent defrosting
No operating sound Coil failure Check resistance between terminals
Outdoor at applying power
LEV
Heating failure, LEV clogged Service necessary
Frozen outdoor heat
exchanger part
Low pressure error LEV clogged Service necessary
or discharge temper-
ature error
When system fault occurs, the error code is displayed at indoor unit display or remote control display, the trou-
ble shooting guide is in the service manual
Outdoor
Unit
Indoor
Unit
Remote
controllers
Service Manual 211

Checking Method for Key Components
2. Checking Method for Key Fompornents

2.1 Compressor
Caution Turn-off the main power of the indoor/outdoor unit before check
Cheking Method 1 Check the compressor
1. Check an electric leakang with DC 500V megger

Comp. pipe
Uncover the compressor terminal cover, and then unplug compressor power
Ω cable from the terminal.
Set the checking range to resistance(Ω)
Check the insulation resistance between pipe and each terminal(U,V,W) as
Figure 1. described in figure 1.
If the insulation resistance is not less than than the value listed in the table 1,
then the compressor is normal
Table 1. Environment air temperature is 20˚C
Resistance (MΩ)
The refrigerant is charged Therefrigerant is not charged
1 30
U 2. Check a short-circuit in the compressor with tester

Ω
Uncover the compressor terminal cover, and then unplug compressor power
V W
cable from the terminal.
Set the checking range to resistance(Ω)
Figure 2.
Check the resistance between each terminal(U,V,W) as described in figure 2.
If the measured value of the resistance is out of the tolerance range listed in
the table 2, then the compressor is not normal.
Table 1. Environment air temperature is 20˚C
Resistance (MΩ)
JT100BEVYE (Inverter) DT212DATYE (Normal)
1.4 ± 7% 1.8 ± 7%

2.2 Linear Empansion Valve

DC 12V Driving
Trouble Shooting
circuit
Guide
LEV
4 ø5 Red 5
ø4 White 4 ø4
M 6
ø3 Yellow 3 ø3
2
1 3 ø2 Orange 2 ø2
ø1 Blue 1 ø1
• Pulse signal output value and valve operation

Output state
Output(ø) No.
1 2 3 4 5 6 7 8
ø1 ON OFF OFF OFF OFF OFF ON ON
ø2 ON ON ON OFF OFF OFF OFF OFF
ø3 OFF OFF ON ON ON OFF OFF OFF
ø4 OFF OFF OFF OFF ON ON ON OFF
• Output pulse sequence

- In valve close state: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 1
- In valve open state: 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 8
* 1. If LEV open angle is not change, all of output phase will be OFF
2. If output phase is different or continuously in the ON state, motor will not operate smoothly and start
vibrating.
• LEV valve operation
- At power ON, open angle signal of 520 pulses out-
put and valve position is set to
Valve If valve is operated smoothly, no noise and vibration
close
open is occurred and if valve is closed. noise occurs.
Angle
- If you contact screw driver to LEV, and contact your
ear to driver hand grip. you can confirm the noise
open Full open from LEV.
480 pulses
- If liquid refrigerant is in LEV, the noise is lower.
pulse
Service Manual 213

• LEV Coil and body(Outdoor unit)
Coil part Body
Lead wire
• Remove and assemble the coil
Remove Assemble
• Grip the A part tightly, and pull up coil part

upward.
When the coil part is removed or assembled,
be careful not to bend the pipe of the body.
A part

• LEV failure check method

* Attention: Outdoor unit LEV and Indoor unit LEV are different in specification,
so the repair process may be different
Failure mode Diagnosis Repair process Unit
Trouble Shooting
Microcomputer 1.Disconnect the LEV connector form control board and Check and replace Indoor
Driving circuit connect testing LED Indoor unit control unit
Guide
failure board
1K LED
2. Main power ON, pulse signal is out from LEV for 17 sec.
If LEDs do not turn on, or are in on state continuously,
then driving circuit is abnormal
LEV locking 1.If LEV is locked, in no load state, the driving motor rotate, Replace LEV Indoor
and clicking sound always occurs / Outdoor
unit
LEV Motor coil 1. Check the resistance between coil terminal Replace LEV Outdoor
short or (red-white, red-yellow, red-orange, red-blue) unit
misconnection 2. If the estimated resistance value is in 52 ± 3Ω
then the LEV is normal
1. Check the resistance between coil terminal Replace LEV Indoor
(brown-white, brown-yellow, brown-orange, brown-blue) unit
2. If the estimated resistance value is in 150 ± 10Ω
then the LEV is normal
Full closing 1. Operate indoor unit with FAN mode and operate another If the amount of Indoor
(valve leakage) indoor unit with COOLING mode leakage is much, unit
2. Check indoor unit(FAN mode) liquid pipe temperature Replace LEV
(from operation monitor of outdoor unit control board)
3. When fan rotate and LEV is fully closed, if there is any
leakage, then the temperature is down
If estimated temperature is very low in comparison with

suction temperature which is displayed at remote
controller then the valve is not fully closed
Service Manual 215

2.3 3Phase Bridge Diode
Internal circuit diagram Appearance

+
- +
~ (U) ~ (V) ~ (W)
~ (U) ~ (V) ~ (W)

-
1. Unplug the + terminal of electrolytic capacitor from the + terminal of

3phase bridge diode
2. Set the multi meter to resistance mode

Check and estimate the resistance between each pair of terminal (+, -),
(+, ~(U)), (+, ~(V)), (+, ~(W)), (~(U), -), (~(V), -), (~(W), -),
the estimated value should be large enough to Mega Ohm unit.
3. Set the multi meter to diode mode, and estimate between each pair of
terminal (~(U), +), (~(V), +), (~(W), +), (-, ~(U)), (-, ~(V)), (-, ~(W)),
the estimated value should be stable and be in between 0 to 1.
(ex: 0.35, 0.46 etc.)
If one of the above articles is not satisfied,

bridge diode must be inferior and to be replaced
Caution In case that the control box is opened and before checking electrical parts,
it should be checked that the LED 01Y (in inverter board, refer to page 172) turned off
(wait 3 minutes after main power OFF), otherwise it may cause electrical shock.

2.4 IPM(Integrated Power Module)
Internal circuit diagram Appearance

P
Trouble Shooting
1
Guide
3 7 11 Array of IPM Pin 19
U V W P
16 17 18
N W V U
1. Unplug the +, – terminal of electrolytic capacitor from the P and N terminal of

IPM
Check and estimate the resistance between each pair of terminal
(P, N), (P, U), (P, V), (P, W), (U, N), (V, N), (W, N), the estimated value should be
large enough to Mega Ohm unit.
Check and estimate the resistance between each pair of terminal
(3, U), (7, V), (11, W), (16, N), (17, N), (18, N), the estimated value
should be large enough to Mega Ohm unit.
the check point is inside of the screw hole (U, V, W, N), if check points are plate
face of the terminal, then estimated values are gate resistance.
4. Set the multi meter to diode mode, and estimate between each pair of
terminal (U, P), (V, P), (W, P), (N, U), (N, V), (N, W), the estimated value
should be stable and be in between 0 to 1. (ex: 0.35, 0.46 etc.)
If one of the above articles is not satisfied,

IPM must be inferior and is to be replaced
Service Manual 217

2.5 Other
Electrolytic
Guide of capacitor and resistor
check electrolytic for voltage
capacitor and distribution
resistor for voltage distribution
1) Disconnect an terminal of voltage distribution resistor from each DC link

electrolytic capacitor
2) Set the multi meter to resistance mode, connect the probe to +,- terminal
of the capacitor. If the estimated resistance value is increase
continuously without short(value is 0), then the resistor is normal
3) Set the multi meter to resistance mode, confirm that the resistance value
of the resistor is around 270 kOhm
Check and replace inferior

components

Self-diagnosis function
3. Self-diagnosis function
Error Indicator
• The function is to self-diagnose airconditioner and indicate the problems, if any.
• Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of
outdoor unit control board as shown in the table.
Trouble Shooting
• If more than two troubles occur simultaneously, lower number of error code is first displayed.
Guide
• After error occurrence, if error is released, error LED is also released simultaneously.
Display Title Cause of Error

0 1 Indoor unit air sensor Indoor unit air sensor open or short
0 2 Indoor unit sensor(inlet pipe) Indoor unit inlet pipe sensor open or short
Wired remote control ↔ indoor In the case that indoor unit can not receive any signal
Indoor unit related error
0 3
unit transmission from wired remote control successively for 3 minutes
0 4 Drain pump Malfunction of drain pump
Outdoor unit ↔ indoor unit trans- In the case that indoor unit can not receive any signal
0 5 from outdoor unit successively for 3 minutes
mission
0 6 Indoor unit outlet pipe sensor Indoor unit outlet pipe sensor open or short
The other operation mode In the case that an indoor unit is operated the other
0 7
operation mode different from the operated indoor unit
0 8 Not in use Not in use
Serial No. Error In the case that the serial number marked on
0 9 EEPROM of indoor unit is 0 or FFFFFF
DC peak IPM over temperature or compressor malfunction is
2 1
occurred 3 times in 1 hour
Power related error
Max CT When current detection is over the maximum current

2 2
limit
DC link DC charging is not performed for 45 sec after starting
2 3
relay turn on
2 4 High pressure Compressor is OFF 3 times in 1 hour due to high pressure
Low/Over voltage Input voltage is out of tolerance of rating voltage
2 5
3 1 Not in use Not in use

Compressor related error
Discharge temperature Due to over rising of inverter compressor discharge tem-

3 2
(inverter compressor) perature, Compressor off is occurred 3 times in 1 hour
Discharge temperature Due to over rising of constant speed compressor dis-
3 3 (constant speed compressor) charge temperature, Compressor off is occurred 3
times in 1 hour
High pressure Due to high pressure, Compressor off is occurred 3
3 4
times in 1 hour
Low pressure Due to low pressure, Compressor off is occurred 3
3 5
times in 1 hour
Service Manual 219

■ Error code 52, 53, 54, 56, 57 are applied only to CRUN1008T0
Display Title Cause of Error

4 0 CT sensor CT sensor open or short
Inverter compressor discharge pipe Inverter compressor dischare pipe sensor open or
4 1
sensor (discharge temperature) short
Outdoor unit related error
4 2 Low pressure sensor Low pressure sensor open or short

4 3 High pressure sensor High pressure sensor open or short
4 4 Outdoor air sensor Outdoor unit air sensor open or short
4 5 Outdoor unit pipe sensor Outdoor unit pipe sensor(left) open or short
4 6 Suction pipe sensor Duction pipe sensor open or short
4 7 Normal compressor discharge Normal compressor discharge pipe sensor open or
pipe short
4 8 Outdoor unit pipe sensor Outdoor unit pipe sensor (right) open or short
4 9 Voltage sensor Voltage sensor open or short
Indoor connection over(capacity) The displayed number of indoor units being connected
5 1 is over rated capacity of outdoor unit
Transmission error from inverter In the case that main PCB can not receive any signal
5 2 PCB to main PCB in the outdoor from inverter PCB successively for 20 seconds
unit
Transmission related error
Transmission error from indoor In the case that main PCB can not receive any signal-
5 3 unit to main PCB in the outdoor from indoor unit successively for 3minutes
unit
Reverse connection of the R,S,T Misconnection or disconnection of R,S,T power line
5 4 power line
Transmission error from central In the case that main PCB can not receive any signal
5 5 control to main PCB in the outdoor from central control successively for 3minutes
unit
Transmission error from main In the case that central control can not receive any
5 6 PCB in the outdoor unit to central signal from main PCB successively for 3minutes
control
Transmission error from main PCB In the case that inverter PCB can not receive any sig-
5 7
to inverter PCB in the outdoor unit nal from main PCB successively for 20 seconds
■ Please refer to trouble shooting guide in service manual for each error title
In case that the control box is opened and before checking electrical parts, it should
Caution be checked that the LED 01Y (Refer to next page) turned off (wait 3 minutes after
main power OFF), otherwise it may cause electrical shock.

Fault diagnosis and Trouble shooting guide

Display
code Title Meaning Cause of error
01 Indoor unit sensor(air)

It is occurred that the • The temperature sensor unplugged
Trouble Shooting
Indoor unit sensor
02 (inlet pipe)
temperature sensor may • The sensor may be open or short
detect abnormal value • Indoor unit PCB may be poor
Guide
Indoor unit sensor
06 (outlet pipe)
Trouble shooting Flow
Confirm the connection between PCB

and temperature sensor
No
The state of sensor Reconnect the unplugged
connection is normal? sensor to correct position
Yes
Unplug the sensor and estimate the

resistance of the sensor
No
The resistance of the
Replace the sensor
sensor is normal?
• Refer to Temperature resistance Table in appendix

Yes
Check the indoor

unit PCB
Service Manual 221

Display
In the case that indoor unit • Wired remote controller PCB may be
Wired remote controller ↔
can not receive any signal poor
03 indoor unit transmission
from wired remote controller • Indoor unit PCB may be poor
error
successively for 3minutes • Defection of connection
Confirm the transmission signal from

the indoor unit PCB
No
Transmission signal is
Replace the indoor unit PCB
normal?
Yes
Confirm the connection between indoor unit

and wired remote controller
The connection is No Repair the

normal? connection
Yes
Replace the wired

remote controller


Display
• Malfunction of float switch of drain

Although operation signal of
Trouble Shooting
pump
04 Fault of drain pump drain pump is occurred, the
• Malfunction of drain pump
float switch send full signal
Guide
• Indoor unit PCB may be poor
Drain pump is No
immersed in water?
Yes
Float Switch is No
normal?
The wire Yes

connection of Drain No Repair the
pump is normal? connection
Yes
Internal drain hose No Check the

is normal? hose
Yes
The PCB output No

Replace the PCB
signal is normal?
Yes
Replace the drain

pump
Service Manual 223


Display
• Automatic addressing problem.

• Unplugging of transmission connector
Outdoor unit ↔ In the case that indoor unit
• Misconnection or open of transmission cable
indoor unit can not receive any signal
05 transmission from outdoor unit
• Malfunction of indoor unit transmission circuit
• Malfunction of outdoor unit transmission circuit
error successively for 3minutes
• The distance between power cable and
transmission cable is not enough.
Transmission
error in all of
indoor units? No
In indoor unit which

Yes
displays error code
Does it execute
automatic
addressing? No Is the state of
connection for
Yes transmission No
is normal?
Yes
Is the state of
transmission in
outdoor unit No
normal?
Yes
Check and replace Repair the Check and replace Repair the
outdoor unit PCB connection indoor unit PCB connection
Execute automatic
addressing


Display
• Example: When one or more indoor units are

All indoor units are not
Trouble Shooting
Different operated in cooling mode, if an indoor unit which is
operating in the same mode.
07 operation
This indoor unit is in different
off state is to operate heating mode, press
mode operation key in the remote controller then this
Guide
mode than other units.
error occurs.
The operation mode

No Change the operation mode of
of indoor unit = The
indoor unit to the same operation
operation mode of
mode of outdoor unit
outdoor unit
Yes
Check and replace

indoor unit PCB
Service Manual 225


Display
• An instant over current in the U,V,W phase of

The protection operation of compressor
inverter compressor driving • Overheat of IPM for malfunction of heat radiation
21 DC Peak
device(IPM) for over • Overcharging of refrigerant
current flow into the IPM • Poor insulation of compressor
• Low voltage input
• Damage of compressor motor coil.
Is the terminal of No
IPM in outdoor unit
normal?
Yes
Repair the
connection
Is the driving No
voltage of IPM
normal?
Yes Check and replace
PCB of outdoor unit
No
Is the IPM normal?
Yes Replace the IPM
Is the outdoor fan No

normal?
Yes
Check the fan
Is the input voltage No

normal?
Yes Check power supply

system
Is the compressor No
normal?
Yes Replace the

compressor
Check whether pipe is blocked and
refrigerant state


Display
• Malfunction of compressor
Trouble Shooting
When current detection is
• Blocking of pipe
22 Max CT over the maximum current
• Malfunction of current detection circuit
limit
Guide
• Low voltage input
Is the detected
value of current No
over the current
limit?
Yes
Check current detection circuit
and replace the PCB
Is input voltage No
normal?
Yes
Check power supply system
Is compressor No
normal?
Yes
Check whether pipe is blocked

Replace compressor
and refrigerant state
Service Manual 227


Display
• Poor connection on DC link terminal

DC charging is not • Malfunction of starting relay
performed for 45 sec. after • Malfunction of capacitor
23 DC link
starting relay turn on (initial • Abnormal in R,S,T connection
charging is under 320VDC) • Malfunction of IPM
• Malfunction of detection PCB
No
Is the starting relay
normal?
Yes
Check and replace PCB and
starting relay
No
Is the connection of
R,S,T input power
normal?
Yes
Repair the connection
No
Is the voltage of DC
link normal?
Yes
Check and replace IPM and
capacitor
Check and replace the PCB


Display
Trouble Shooting
• Malfunction of high pressure switch
Compressor off has occurred • Fan lock of indoor or outdoor unit
24 High pressure
3 times in1 hour • Obstacles of indoor or outdoor heat exchanger
Guide
• Blocking in discharge pipe of compressor
No
Does indoor/outdoor
fan operate?
Yes
Check and replace the fan
and its drive part
Is the ventilation of No
heat exchanger
smooth?
Yes
Remove the obstacles
material from heat exchanger
Does high pressure No

switch operate at the
power off?
Yes
Replace high power switch
Is the circuit for No

detection of high
pressure switch
normal?
Yes
Replace PCB

Service Manual 229


Display
Input voltage is out of

Low / over • Abnormal of Input power voltage
25 voltage
tolerance of rating voltage
• Malfunction of circuit for detection of voltage
No
Is normal input voltage?
Yes
Check power supply system
Check and replace PCB


Display
• Abnormal of sensor for detecting temperature of
Due to over rising of
Discharge discharge gas from compressor
Trouble Shooting
inverter compressor
temperature • Malfunction of circuit for detection of temperature
32 (inverter
discharge temperature,
of discharge gas from compressor
Guide
Compressor off has occurred
compressor) • Shortage of refrigerant
3 times in 1 hour
• Malfunction of LEV
Does discharge No
temperature really
rise?
Yes
Is discharge No
temperature
normal ?
Yes
Is indoor/outdoor No
Replace
LEV normal? Check and discharge
replace PCB temperature
Yes sensor
Check and replace

LEV
Does liquid No
Injection operate
normally?
Yes
Check liquid SV
Is the amount of No
additive refrigerant
normal?
Yes
Add refrigerant
Check leakage of refrigerant
Service Manual 231


Display
• Abnormal of sensor for detecting temperature of

Discharge Due to over rising of
discharge gas from compressor
temperature constant speed compressor
• Malfunction of circuit for detection of temperature
33 (constant discharge temperature,
of discharge gas from compressor
speed Compressor off has occurred
• Shortage of refrigerant
compressor) 3 times in 1 hour
• Malfunction of LEV
Does discharge No
temperature really
rise?
Yes
Is discharge No
temperature
normal ?
Yes
Is indoor/outdoor No
Replace
LEV normal? Check and discharge
replace PCB temperature
Yes sensor
Check and replace

LEV
Does liquid No
Injection operate
normally?
Yes
Check liquid SV
Is the amount of No
additive refrigerant
normal?
Yes
Add refrigerant
Check leakage of refrigerant


Display
Due to high pressure,

Compressor off has occurred • Malfunction of high pressure sensor
Trouble Shooting
3 times in1 hour • Fan lock of indoor or outdoor unit
34 High pressure
• Covering of indoor or outdoor heat exchanger
Guide
The discharge pressure of • Blocking in discharge pipe of compressor
compressor is over the limit
Does discharge No
pressure really rise?
Yes
Is high pressure No
sensor normal ?
Yes
Does indoor/outdoor No
Replace high
fan operate?
Check and pressure
replace PCB sensor
Yes
Check and replace the fan

and its drive part
Is the ventilation of No
heat exchanger
smooth?
Yes
Remove the covering
material from heat exchanger

Service Manual 233


Display
Compressor off has occurred • Abnormal of sensor for detecting pressure of

3 times in1 hour suction pipe of compressor
35 Low pressure • Malfunction of circuit for detecting pressure of
The suction pressure of suction pipe of compressor
compressor is under the • Closing of SVC valve
limit • Shortage of refrigerant
Does suction No
pressure really
drop?
Yes
Is low No
pressure
normal?
Yes Replace low

pressure sensor
Replace PCB
No
Does SVC valve
open?
Yes
Open SVC valve



Display
40, 41,
Trouble Shooting
•The temperature sensor is unplugged
42, 43,
Sensor Sensor detects abnormal •The sensor is open or short by its inferiority
44, 45, error value •PCB inferiority
Guide
46, 47,
48, 49
Confirm the state of sensor connection

to the PCB
No
Is the state of sensor Plug the sensor to
connection normal? normal position
Yes
No
Is the value of Sensor Replace sensor
resistance/voltage which is
normal? corresponded
Yes •• Refer to value table of temperature-resistance in appendix
•• Refer to value table of pressure-voltage in appendix
Check indoor unit

PCB
Service Manual 235


Display
The total capacity of indoor
units being connected is
Indoor over rated capacity of • Over connection to outdoor unit capacity
51 connection outdoor unit by 130% (10HP), • Malfunction of indoor unit capacity code
over(capacity) 115% (4.5HP)
120% (6HP)
Is the total capacity of No

Adjust indoor unit capacity
indoor units normal?
Yes
Confirm indoor unit capacity code and

replace PCB


Display
Transmission
In the case that main PCB
Trouble Shooting
error from • The connector for transmission disconnected
can not receive any signal
inverter PCB to • The transmission line is misconnected or shorted
52 main PCB in
from inverter PCB
• Transmission circuit of main PCB is abnormal
Guide
successively for 20
the outdoor • Transmission circuit of inverter PCB is abnormal
seconds
unit
Is the transmission No
line connection /
Connector normal?
Yes
Repair the connection /
connector
circuit of main PCB
normal?
Yes
Check and replace the Check and Replace the

inverter PCB main PCB
Service Manual 237


Display
Transmission
• The connector for transmission disconnected
error from In the case that main PCB
• The transmission line is misconnected or shorted
indoor unit to can not receive any signal
53 main PCB in from indoor unit
• Transmission circuit of main PCB is abnormal
• Transmission circuit of indoor unit PCB is
the outdoor successively for 3minutes
abnormal
unit
Is the transmission
line connection /
Connector normal? No
Yes
connector
circuit of main PCB
normal?
Yes



Display
Trouble Shooting
Reverse
• Inverter PCB is abnormal
connection of
54 • One of the R,S,T line is disconnected
Guide
R,S,T power
• Connection order of R,S,T line is changed
line
Is the R,S,T power

No
line connection
normal?
Repair the connection
Yes
Exchange the connection of two of the

R,S,T line
No
Is the operation normal?
Check and replace

inverter PCB
Service Manual 239


Display
Transmission • Group setting is not carried out
error from In the case that main PCB
can not receive any signal • Transmission connector unplugged
central
55 controller to from central controller • Transmission cable misconnected / disconnection
main PCB in successively for 3minutes • Malfunction of central controller circuit
the outdoor • Malfunction of transmission circuit of indoor unit
unit
Is the PCB of central No

controller normal?
Yes
No
Execute group
setting
Yes
Is the state of No
transmission in
outdoor unit normal?
Yes
Check and replace outdoor Repair the

connection Check and replace
unit PCB
indoor unit PCB
Execute group
setting


Display
• Group setting is not carried out
Transmission
In the case that central • Transmission connector unplugged
Trouble Shooting
error from main
controller can not receive • Transmission cable misconnected / disconnection
56 PCB in the
any signal • Malfunction of central controller circuit
Guide
outdoor unit
from main PCB • Malfunction of transmission circuit of indoor unit
to central
successively for 3minutes • Distance between transmission cable and power
controller
cable is not enough
Is the PCB of central No

controller normal?
Yes
Execute group No
setting
Yes
Is the state of No
transmission in
outdoor unit normal?
Yes
Check and replace outdoor Repair the

connection Check and replace
unit PCB
indoor unit PCB
Execute group
setting
Service Manual 241


Display
In the case that inverter

Transmission
PCB can not receive any • The connector for transmission disconnected
error from main
signal • The transmission line is misconnected or shorted
57 PCB to inverter
from main PCB • Transmission circuit of main PCB is abnormal
PCB in the
successively for 20 • Transmission circuit of inverter PCB is abnormal
outdoor unit
seconds
line connection /
Connector normal?
Yes
connector
circuit of main PCB
normal?
Yes


Appendix
Appendix
Service Manual 243

Position of the LED01Y in inverter board
Position of the LED01Y in inverter board

CRUN10080T Inverter board
LED 01Y
244 Appendix
Resistance-Temperature Table
Thermistor: LNTA502HF
T Rmin Rcent Rmax DR DT(°C) T Rmin Rcent Rmax DR DT(°C)
-30 79.62 86.91 94.78 9.05% 1.42 51 1.649 1.736 1.826 5.20% 1.39
-29 75.02 81.79 89.08 8.92% 1.41 52 1.587 1.672 1.760 5.28% 1.42
-28 70.71 77.00 83.76 8.79% 1.40 53 1.527 1.610 1.697 5.36% 1.45
-27 66.67 72.51 78.79 8.66% 1.39 54 1.470 1.552 1.636 5.44% 1.48
-26 62.89 68.31 74.14 8.53% 1.38 55 1.416 1.495 1.578 5.52% 1.51
-25 59.34 64.38 69.79 8.40% 1.37 56 1.364 1.441 1.522 5.59% 1.54
-24 56.00 60.69 65.71 8.27% 1.36 57 1.314 1.389 1.468 5.67% 1.57
-23 52.88 57.24 61.90 8.15% 1.35 58 1.266 1.340 1.417 5.75% 1.60
-22 49.94 54.00 58.33 8.02% 1.33 59 1.220 1.292 1.367 5.83% 1.63
-21 47.19 50.96 54.98 7.90% 1.32 60 1.176 1.246 1.320 5.90% 1.66
-20 44.60 48.11 51.85 7.77% 1.31 61 1.134 1.203 1.274 5.98% 1.69
-19 42.17 45.43 48.91 7.65% 1.30 62 1.093 1.161 1.231 6.05% 1.72
-18 39.88 42.92 46.15 7.53% 1.29 63 1.054 1.120 1.189 6.13% 1.76
-17 37.73 40.56 43.57 7.40% 1.28 64 1.017 1.081 1.148 6.20% 1.79
-16 35.71 38.35 41.14 7.28% 1.26 65 0.9815 1.044 1.110 6.28% 1.82
-15 33.81 36.26 38.86 7.16% 1.25 66 0.9472 1.008 1.072 6.35% 1.85
-14 32.02 34.30 36.72 7.04% 1.24 67 0.9143 0.9739 1.037 6.43% 1.88
-13 30.33 32.46 34.71 6.93% 1.23 68 0.8827 0.9409 1.002 6.50% 1.91
-12 28.74 30.73 32.82 6.81% 1.22
Appendix
69 0.8523 0.9092 0.9689 6.57% 1.95
-11 27.25 29.10 31.04 6.69% 1.20 70 0.8232 0.8787 0.9370 6.64% 1.98
-10 25.84 27.56 29.37 6.58% 1.19
71 0.7951 0.8493 0.9064 6.72% 2.01
-9 24.51 26.11 27.80 6.46% 1.18
72 0.7682 0.8211 0.8768 6.79% 2.04
-8 23.25 24.75 26.32 6.35% 1.16
-7 22.07 23.47 24.93 6.23% 1.15 73 0.7423 0.7940 0.8484 6.86% 2.08
-6 20.95 22.26 23.62 6.12% 1.14 74 0.7174 0.7678 0.8211 6.93% 2.11
-5 19.90 21.12 22.39 6.01% 1.13 75 0.6935 0.7427 0.7947 7.00% 2.14
-4 18.91 20.04 21.22 5.90% 1.11 76 0.6704 0.7185 0.7693 7.07% 2.18
-3 17.97 19.02 20.13 5.79% 1.10 77 0.6483 0.6952 0.7449 7.15% 2.21
-2 17.08 18.07 19.09 5.68% 1.09 78 0.6270 0.6728 0.7214 7.22% 2.25
-1 16.24 17.16 18.12 5.57% 1.07 79 0.6064 0.6512 0.6987 7.29% 2.28
0 15.45 16.31 17.20 5.46% 1.06 80 0.5867 0.6304 0.6768 7.36% 2.31
1 14.70 15.50 16.33 5.36% 1.04 81 0.5677 0.6104 0.6557 7.42% 2.35
2 13.99 14.74 15.51 5.25% 1.03 82 0.5494 0.5911 0.6353 7.49% 2.38
3 13.32 14.02 14.74 5.15% 1.02 83 0.5317 0.5724 0.6157 7.56% 2.42
4 12.68 13.33 14.01 5.04% 1.00 84 0.5147 0.5545 0.5968 7.63% 2.45
5 12.08 12.69 13.32 4.94% 0.99 85 0.4983 0.5372 0.5786 7.70% 2.49
6 11.51 12.08 12.66 4.83% 0.97 86 0.4826 0.5205 0.5610 7.77% 2.52
7 10.97 11.50 12.05 4.73% 0.96 87 0.4674 0.5044 0.5440 7.84% 2.56
8 10.46 10.96 11.46 4.63% 0.95 88 0.4527 0.4889 0.5275 7.90% 2.59
9 9.978 10.44 10.91 4.53% 0.93 89 0.4386 0.4739 0.5117 7.97% 2.63
10 9.518 9.949 10.39 4.43% 0.92 90 0.4249 0.4595 0.4964 8.04% 2.67
11 9.083 9.484 9.895 4.33% 0.90 91 0.4118 0.4455 0.4816 8.10% 2.70
12 8.669 9.044 9.427 4.23% 0.89 92 0.3991 0.4321 0.4674 8.17% 2.74
13 8.277 8.627 8.983 4.13% 0.87 93 0.3868 0.4191 0.4536 8.24% 2.77
14 7.905 8.231 8.563 4.03% 0.86 94 0.3750 0.4065 0.4402 8.30% 2.81
15 7.551 7.856 8.165 3.93% 0.84 95 0.3636 0.3944 0.4274 8.37% 2.85
16 7.216 7.500 7.787 3.84% 0.83 96 0.3526 0.3826 0.4149 8.43% 2.88
17 6.897 7.161 7.430 3.74% 0.81 97 0.3419 0.3713 0.4029 8.50% 2.92
18 6.594 6.841 7.090 3.65% 0.80 98 0.3317 0.3604 0.3912 8.56% 2.96
19 6.306 6.536 6.768 3.55% 0.78 99 0.3217 0.3498 0.3800 8.63% 3.00
20 6.032 6.246 6.462 3.46% 0.76 100 0.3121 0.3396 0.3691 8.69% 3.03
21 5.772 5.971 6.172 3.37% 0.75 101 0.3029 0.3297 0.3586 8.76% 3.07
22 5.524 5.710 5.897 3.27% 0.73 102 0.2939 0.3201 0.3484 8.82% 3.11
23 5.288 5.461 5.635 3.18% 0.72 103 0.2853 0.3109 0.3385 8.88% 3.15
24 5.064 5.225 5.386 3.09% 0.70 104 0.2769 0.3019 0.3290 8.95% 3.19
25 4.850 5.000 5.150 3.00% 0.68 105 0.2688 0.2933 0.3197 9.01% 3.22
26 4.638 4.786 4.934 3.09% 0.71 106 0.2610 0.2849 0.3108 9.07% 3.26
27 4.437 4.583 4.728 3.18% 0.73 107 0.2534 0.2768 0.3021 9.14% 3.30
28 4.246 4.389 4.532 3.27% 0.76 108 0.2461 0.2690 0.2937 9.20% 3.34
29 4.064 4.204 4.345 3.36% 0.79 109 0.2390 0.2614 0.2856 9.26% 3.38
30 3.891 4.028 4.167 3.45% 0.81 110 0.2321 0.2540 0.2777 9.33% 3.42
31 3.726 3.861 3.997 3.53% 0.84
32 3.569 3.701 3.835 3.62% 0.86
33 3.419 3.549 3.681 3.71% 0.89
34 3.277 3.404 3.534 3.79% 0.92 Note: T : Temperature(°C)
35 3.141 3.266 3.393 3.88% 0.94
36 3.012 3.134 3.258 3.97% 0.97 Rmin : Minimum value of Resistance
37 2.888 3.008 3.130 4.05% 1.00
38 2.771 2.888 3.008 4.14% 1.02 Rcent : Central value of Resistance
39 2.659 2.773 2.890 4.22% 1.05
40 2.552 2.664 2.779 4.31% 1.08
41 2.450 2.559 2.672 4.39% 1.10 Rmax : Maximum value of Resistance
42 2.352 2.459 2.569 4.47% 1.13
43 2.259 2.364 2.472 4.55% 1.16 DR : Deviation Ratio
44 2.170 2.273 2.378 4.64% 1.19
45 2.085 2.185 2.289 4.72% 1.22 DT : Deviation Temperature
46 2.004 2.102 2.203 4.80% 1.25
47 1.926 2.022 2.121 4.88% 1.27
48 1.852 1.946 2.042 4.96% 1.30
49 1.781 1.873 1.967 5.04% 1.33
50 1.713 1.803 1.895 5.12% 1.36
Service Manual 245

Thermistor: 103HF
-30 159.2 173.8 189.6 9.05% 1.42 51 3.297 3.472 3.652 5.20% 1.39
-29 150.0 163.6 178.2 8.92% 1.41 52 3.173 3.344 3.520 5.28% 1.42
-28 141.4 154.0 167.5 8.79% 1.40 53 3.054 3.221 3.394 5.36% 1.45
-27 133.3 145.0 157.6 8.66% 1.39 54 2.940 3.103 3.272 5.44% 1.48
-26 125.8 136.6 148.3 8.53% 1.38 55 2.832 2.990 3.155 5.52% 1.51
-25 118.7 128.8 139.6 8.40% 1.37 56 2.727 2.882 3.044 5.59% 1.54
-24 112.0 121.4 131.4 8.27% 1.36 57 2.627 2.779 2.936 5.67% 1.57
-23 105.8 114.5 123.8 8.15% 1.35 58 2.532 2.680 2.834 5.75% 1.60
-22 99.89 108.0 116.7 8.02% 1.33 59 2.440 2.584 2.735 5.83% 1.63
-21 94.38 101.9 110.0 7.90% 1.32 60 2.352 2.493 2.640 5.90% 1.66
-20 89.20 96.22 103.7 7.77% 1.31 61 2.267 2.405 2.549 5.98% 1.69
-19 84.34 90.87 97.82 7.65% 1.30 62 2.187 2.321 2.462 6.05% 1.72
-18 79.76 85.84 92.30 7.53% 1.29 63 2.109 2.240 2.378 6.13% 1.76
-17 75.46 81.12 87.13 7.40% 1.28 64 2.035 2.163 2.297 6.20% 1.79
-16 71.42 76.69 82.28 7.28% 1.26 65 1.963 2.088 2.219 6.28% 1.82
-15 67.61 72.52 77.72 7.16% 1.25 66 1.894 2.017 2.145 6.35% 1.85
-14 64.03 68.61 73.44 7.04% 1.24 67 1.829 1.948 2.073 6.43% 1.88
-13 60.66 64.92 69.42 6.93% 1.23 68 1.765 1.882 2.004 6.50% 1.91
-12 57.48 61.45 65.64 6.81% 1.22 69 1.705 1.818 1.938 6.57% 1.95
-11 54.49 58.19 62.09 6.69% 1.20 70 1.646 1.757 1.874 6.64% 1.98
-10 51.67 55.12 58.74 6.58% 1.19
71 1.590 1.699 1.813 6.72% 2.01
-9 49.01 52.23 55.60 6.46% 1.18
72 1.536 1.642 1.754 6.79% 2.04
-8 46.51 49.50 52.65 6.35% 1.16
-7 44.14 46.94 49.86 6.23% 1.15 73 1.485 1.588 1.697 6.86% 2.08
-6 41.91 44.52 47.24 6.12% 1.14 74 1.435 1.536 1.642 6.93% 2.11
-5 39.80 42.23 44.77 6.01% 1.13 75 1.387 1.485 1.589 7.00% 2.14
-4 37.81 40.08 42.45 5.90% 1.11 76 1.341 1.437 1.539 7.07% 2.18
-3 35.94 38.05 40.25 5.79% 1.10 77 1.297 1.390 1.490 7.15% 2.21
-2 34.16 36.13 38.19 5.68% 1.09 78 1.254 1.346 1.443 7.22% 2.25
-1 32.48 34.32 36.24 5.57% 1.07 79 1.213 1.302 1.397 7.29% 2.28
0 30.90 32.62 34.40 5.46% 1.06 80 1.173 1.261 1.354 7.36% 2.31
1 29.40 31.00 32.66 5.36% 1.04 81 1.135 1.221 1.311 7.42% 2.35
2 27.98 29.48 31.02 5.25% 1.03 82 1.099 1.182 1.271 7.49% 2.38
3 26.64 28.03 29.48 5.15% 1.02 83 1.063 1.145 1.231 7.56% 2.42
4 25.37 26.67 28.01 5.04% 1.00 84 1.029 1.109 1.194 7.63% 2.45
5 24.16 25.38 26.63 4.94% 0.99 85 0.9967 1.074 1.157 7.70% 2.49
6 23.03 24.16 25.33 4.83% 0.97 86 0.9651 1.041 1.122 7.77% 2.52
7 21.95 23.01 24.09 4.73% 0.96 87 0.9347 1.009 1.088 7.84% 2.56
8 20.92 21.91 22.93 4.63% 0.95 88 0.9054 0.9778 1.055 7.90% 2.59
9 19.96 20.88 21.82 4.53% 0.93 89 0.8771 0.9479 1.023 7.97% 2.63
10 19.04 19.90 20.78 4.43% 0.92 90 0.8498 0.9190 0.9928 8.04% 2.67
11 18.17 18.97 19.79 4.33% 0.90 91 0.8235 0.8911 0.9633 8.10% 2.70
12 17.34 18.09 18.85 4.23% 0.89 92 0.7981 0.8641 0.9347 8.17% 2.74
13 16.55 17.25 17.97 4.13% 0.87 93 0.7736 0.8381 0.9071 8.24% 2.77
14 15.81 16.46 17.13 4.03% 0.86 94 0.7500 0.8130 0.8805 8.30% 2.81
15 15.10 15.71 16.33 3.93% 0.84 95 0.7272 0.7887 0.8547 8.37% 2.85
16 14.43 15.00 15.57 3.84% 0.83 96 0.7051 0.7653 0.8298 8.43% 2.88
17 13.79 14.32 14.86 3.74% 0.81 97 0.6839 0.7426 0.8058 8.50% 2.92
18 13.19 13.68 14.18 3.65% 0.80 98 0.6633 0.7208 0.7825 8.56% 2.96
19 12.61 13.07 13.54 3.55% 0.78 99 0.6435 0.6996 0.7600 8.63% 3.00
20 12.06 12.49 12.92 3.46% 0.76 100 0.6243 0.6792 0.7382 8.69% 3.03
21 11.54 11.94 12.34 3.37% 0.75 101 0.6057 0.6594 0.7171 8.76% 3.07
22 11.05 11.42 11.79 3.27% 0.73 102 0.5878 0.6403 0.6967 8.82% 3.11
23 10.58 10.92 11.27 3.18% 0.72 103 0.5705 0.6218 0.6770 8.88% 3.15
24 10.13 10.45 10.77 3.09% 0.70 104 0.5538 0.6039 0.6579 8.95% 3.19
25 9.700 10.00 10.30 3.00% 0.68 105 0.5376 0.5866 0.6394 9.01% 3.22
26 9.277 9.572 9.868 3.09% 0.71 106 0.5219 0.5698 0.6215 9.07% 3.26
27 8.875 9.165 9.456 3.18% 0.73 107 0.5068 0.5536 0.6042 9.14% 3.30
28 8.492 8.777 9.064 3.27% 0.76 108 0.4921 0.5379 0.5874 9.20% 3.34
29 8.128 8.408 8.691 3.36% 0.79 109 0.4780 0.5227 0.5711 9.26% 3.38
30 7.781 8.057 8.335 3.45% 0.81 110 0.4643 0.5080 0.5554 9.33% 3.42
31 7.452 7.722 7.995 3.53% 0.84
32 7.138 7.403 7.671 3.62% 0.86
33 6.839 7.099 7.362 3.71% 0.89
34 6.554 6.809 7.067 3.79% 0.92 Note: T : Temperature(°C)
35 6.282 6.532 6.786 3.88% 0.94
36 6.024 6.268 6.517 3.97% 0.97 Rmin : Minimum value of Resistance
37 5.777 6.016 6.260 4.05% 1.00
38 5.542 5.776 6.015 4.14% 1.02 Rcent : Central value of Resistance
39 5.317 5.547 5.781 4.22% 1.05
40 5.103 5.328 5.557 4.31% 1.08 Rmax : Maximum value of Resistance
41 4.899 5.119 5.343 4.39% 1.10
42 4.704 4.919 5.139 4.47% 1.13
43 4.518 4.728 4.943 4.55% 1.16
DR : Deviation Ratio
44 4.340 4.545 4.756 4.64% 1.19
45 4.170 4.371 4.577 4.72% 1.22 DT : Deviation Temperature
46 4.008 4.204 4.406 4.80% 1.25
47 3.853 4.044 4.242 4.88% 1.27
48 3.704 3.892 4.085 4.96% 1.30
49 3.563 3.746 3.934 5.04% 1.33
50 3.427 3.606 3.790 5.12% 1.36
246 Appendix
Voltage-Pressure Table
Low pressure sensor
YSK S344 sensor

1000
Pressure, kPa abs
800
600
400
Appendix
200
0
0 0.5 1 1.5 2 2.5 3
Voltage, V
Voltage, V P, kPa Tbub, °C Voltage, V P, kPa Tbub, °C Voltage, V P, kPa Tbub, °C

0.5 101 -43.9 1.28 361 -13.2 2.06 621 2.8
0.53 111 -41.9 1.31 371 -12.5 2.09 631 3.3
0.56 121 -40.0 1.34 381 -11.7 2.12 641 3.8
0.59 131 -38.3 1.37 391 -11.0 2.15 651 4.3
0.62 141 -36.7 1.4 401 -10.3 2.18 661 4.8
0.65 151 -35.1 1.43 411 -9.6 2.21 671 5.3
0.68 161 -33.6 1.46 421 -8.9 2.24 681 5.7
0.71 171 -32.3 1.49 431 -8.2 2.27 691 6.2
0.74 181 -30.9 1.52 441 -7.6 2.3 701 6.7
0.77 191 -29.6 1.55 451 -6.9 2.33 711 7.1
0.8 201 -28.4 1.58 461 -6.3 2.36 721 7.6
0.83 211 -27.2 1.61 471 -5.6 2.39 731 8.0
0.86 221 -26.1 1.64 481 -5.0 2.42 741 8.5
0.89 231 -25.0 1.67 491 -4.4 2.45 751 8.9
0.92 241 -23.9 1.7 501 -3.8 2.48 761 9.4
0.95 251 -22.9 1.73 511 -3.2 2.51 771 9.8
0.98 261 -21.9 1.76 521 -2.6 2.54 781 10.2
1.01 271 -20.9 1.79 531 -2.1 2.57 791 10.7
1.04 281 -20.0 1.82 541 -1.5 2.6 801 11.1
1.07 291 -19.1 1.85 551 -0.9 2.63 811 11.5
1.1 301 -18.2 1.88 561 -0.4 2.66 821 11.9
1.13 311 -17.3 1.91 571 0.2 2.69 831 12.3
1.16 321 -16.5 1.94 581 0.7 2.72 841 12.7
1.19 331 -15.6 1.97 591 1.2 2.75 851 13.1
1.22 341 -14.8 2 601 1.8 2.78 861 13.5
1.25 351 -14.0 2.03 611 2.3 2.81 871 13.9
Service Manual 247

High pressure sensor
YSK S345 sensor

3500
Pressure, kPa abs
3000
2500
2000
1500
1000
500
0
0 0.5 1 1.5 2 2.5 3 3.5 4
Voltage, V
Voltage, V P, kPa Tbub, °C Voltage, V P, kPa Tbub, °C Voltage, V P, kPa Tbub, °C

1.28 881 14.3 2.06 1661 38.0 2.84 2441 54.4
1.31 911 15.5 2.09 1691 38.7 2.87 2471 54.9
1.34 941 16.6 2.12 1721 39.4 2.9 2501 55.5
1.37 971 17.7 2.15 1751 40.2 2.93 2531 56.0
1.4 1001 18.8 2.18 1781 40.9 2.96 2561 56.5
1.43 1031 19.8 2.21 1811 41.5 2.99 2591 57.1
1.46 1061 20.9 2.24 1841 42.2 3.02 2621 57.6
1.49 1091 21.9 2.27 1871 42.9 3.05 2651 58.1
1.52 1121 22.9 2.3 1901 43.6 3.08 2681 58.6
1.55 1151 23.8 2.33 1931 44.2 3.11 2711 59.1
1.58 1181 24.8 2.36 1961 44.9 3.14 2741 59.6
1.61 1211 25.7 2.39 1991 45.5 3.17 2771 60.1
1.64 1241 26.6 2.42 2021 46.1 3.2 2801 60.6
1.67 1271 27.5 2.45 2051 46.8 3.23 2831 61.1
1.7 1301 28.4 2.48 2081 47.4 3.26 2861 61.6
1.73 1331 29.3 2.51 2111 48.0 3.29 2891 62.1
1.76 1361 30.1 2.54 2141 48.6 3.32 2921 62.6
1.79 1391 31.0 2.57 2171 49.2 3.35 2951 63.1
1.82 1421 31.8 2.6 2201 49.8 3.38 2981 63.5
1.85 1451 32.6 2.63 2231 50.4 3.41 3011 64.0
1.88 1481 33.4 2.66 2261 51.0 3.44 3041 64.5
1.91 1511 34.2 2.69 2291 51.6 3.47 3071 64.9
1.94 1541 35.0 2.72 2321 52.1 3.5 3101 65.4
1.97 1571 35.8 2.75 2351 52.7
2 1601 36.5 2.78 2381 53.3
2.03 1631 37.3 2.81 2411 53.8
248 Appendix
P/No.: 3828A20279A Printed in Korea
After reading this manual, keep it in a place easily accessible to the user for future reference.

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Safety Precautions .......................................................................................5

Ceiling Mounted Cassette Type (4 way)................................................20

Ceiling Mounted Duct Type (High static) ..............................................35

Ceiling Mounted Duct Type (Low static)...............................................47

Convertible Type .....................................................................................57

Wall Mounted Type..................................................................................76

Art Cool Type (Mirror).............................................................................92

Art Cool Type.........................................................................................110

Art Cool Type (Wide).............................................................................126

Flor Standing Type................................................................................143

Trouble Shooting Guide .......................................................................209

Total Cooling Capacity in Btu/h unit

Combination of Inverter Type and

Indicates that this is System indoor unit

Total Cooling Capacity in Horse Power(Hp) unit

Combination of Inverter Type and

Indicates that this is System outdoor unit

CRNN CRNN CRNN

Art CRNN CRNN

CRNN CRNN CRNN

High CRNN CRNN CRNN

Static CRNN CRNN

Inverter Series CRUN CRUN 3ø, 4W,380V~415V,

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

■ Meanings of symbols used in this manual are as shown below.

Be sure not to do.

Be sure to follow the instruction.

This symbol indicates a part which must be grounded.

This symbol alerts you to the risk of electric shock.

This symbol alerts you to the risk of hot surface.

NOTICE This symbol indicates special notes.

ELV Pay attention to electric shock.

Carefully read the labels affixed to the main unit.

Cautions before installation

Take measures to prevent children from

Cautions for electrical work and movement

Safely dispose of the packing materials.

Cautions before the test run

Turn on the power at least 12 hours before starting operation.

Do not touch the switches with wet fingers.

Do not turn off the power immediately after stopping operation.

Notes:- Conversion Formula

Sensing the Room Temperature • Room temperature sensor. (Thermistor)

Time Delay Safety Control • Restarting is inhibited for approx. 3 minutes.

Indoor Fan Speed Control • Jet, High, Med, Low

Soft Dry Operation Mode • Intermittent operation of fan at low speed.

■ Auto Swing Control

■ Air-Filter Checking Control

■ Cooling Mode Operation

Intake Air Temperature

COMPRESSOR ON OFF ON OFF ON

■ Heating Mode Operation

Intake Air Temperature. minimum 3min

INDOOR FAN (Hot Start) Selected

Refrigerant pipe connection port diameter

CRNN096TCA0 12.7(1/2) 6.35(1/4)

8. Replacement Parts List