AC Carrier PDF

R410A
FILE NO. SVM-10019

SERVICE MANUAL
SPLIT TYPE
Indoor Unit Outdoor Unit
<High Wall, Heat Pump Type> <Heat Pump Type>
RAS-09LKV-UL RAS-09LAV-UL
RAS-12LKV-UL RAS-12LAV-UL
Feburary, 2010
2
CONTENTS
1. SAFETY PRECAUTIONS .......................................................................... 3
2. SPECIFICATIONS ..................................................................................... 6
3. REFRIGERANT R410A ............................................................................. 8
4. CONSTRUCTION VIEWS ........................................................................ 16
5. WIRING DIAGRAM .................................................................................. 18
6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 20
7. REFRIGERANT CYCLE DIAGRAM ........................................................ 21
8. CONTROL BLOCK DIAGRAM ................................................................ 24
9. OPERATION DESCRIPTION................................................................... 26
10. INSTALLATION PROCEDURE ................................................................ 51
11. HOW TO DIAGNOSE THE TROUBLE...................................................... 66
12. HOW TO REPLACE THE MAIN PARTS................................................... 93
13. EXPLODED VIEWS AND PARTS LIST ................................................. 109
FILE NO. SVM-10019
1. SAFETY PRECAUTIONS
Installing, staring up, and servicing air-conditioning equipment can be hazardous due to system pressures, electrical
components, and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should install, start-up, and service this equipment.
Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes, Wear safety glasses and work gloves. Keep quenching cloth and fire extinguisher near by
when brazing. Use care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit.
Consult local building codes and National Electrical Code (NEC) for special requirements. Recognize safety information.
This is the safety-alert symbol ! . When you see this symbol on the unit and in instructions or manuals, be alert to the
potential for personal injury. Understand these signal words : DANGER, WARNING, and CAUTION. These words are
used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in severs personal injury or death. WARNING signifies
hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result
in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
Before installation, please read these precautions for safety carefully.
Be sure to follow the precautions provided here to avoid safety risks. The symbols and their meanings are shown below.
WARNING : It indicates that incorrect use of this unit may cause severe injury or death.
CAUTION : FAILURE TO FOLLOW THIS CAUTION may result in equipment damage or improper operation and
personal injury.
CAUTION
New refrigerant air conditioner installation
THIS AIR CONDITIONER USES THE NEW HFC REFRIGERANT (R410A), WHICH DOES NOT DESTROY THE
OZONE LAYER.
R410A refrigerant is affected by inpurities such as water and oils because the pressure of R410A refrigerant is approx.
1.6 times of refrigerant R22.
ALSO NEW OILS ARE USED WITH R410A, THUS ALWAYS USE NEW REFRIGERANT PIPING AND DO NOT
ALLOW MOISTURE OR DUST TO ENTER THE SYSTEM.
To avoid mixing refrigerant and refrigerant machine oil, the sizes of charging port on the main unit is different than
those used on R22 machines and different tools will be required.
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe in the ground. If any section of pipe is buried, there must
be a 6 in. (152 mm) vertical rise to the valve connections on the outdoor units. If more than the recommended length
is buried, refrigerant may migrate to the cooter buried section during extended periods of system shutdown. This
causes refrigerant slugging and could possibly damage the compressor at start-up.
FILE NO. SVM-10019
3
DANGER
FOR USE BY QUALIFIED PERSONS ONLY.
TURN OFF MAIN POWER SUPPLY BEFORE.ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL POWER
SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED WRONGLY,
ELECTRIC PARTS MAY BE DAMAGED.
CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION.
DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS.
FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.
TO PREVENT OVERHEATION THE INDOOR UNIT AND CAUSING A FIRE HAZARD, PLACE THE UNIT WELL AWAY
(MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEATERS, FURNACE, STOVES, ETC.
WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN, BE VERY CAREFUL NOT
TO GET THE SPECIFIED REFRIGERANT (R410A) WITH ANY OTHER GASEOUS BODY INTO THE REFRIGERATION
CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION
CYCLE BECOMES ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST OF THE PIPE AND INJ URIES ON
PERSONS.
IN THE EVENT THAT THE REFRIGERANT LEAK, DURING INSTALLATION WORK, IMMEDIATELY ALLOW FRESH AIR
INTO THE ROOM. IF THE REFRIGERANT GAS IS HEATED BY FIRE OR SOMETHING ELSE, IT CAUSE GENERATION
OF POISONOUS GAS.
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may
be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label.
Never modify this unit by removing any of the safety guards or bypassing any of the safety interlock switches.
Installation work must be purformed by qualified personnel only.
Specified tools and pipe parts for model R410A are required, and installation work must be done in accordance with the
manual. HFC type refrigerant R410A has 1.6 times more pressure than that of conventional refrigerant (R22). Use the
specified pipe parts, and ensure correct installation, otherwise damage and/or injury may be caused. At the same time,
water leakage, electrical shock, and fire may occur.
Be sure to install the unit in a place which can sufficiently bear its weight. If the load bearing of the unit is not enough, or
installation of the unit is improper, the unit may fall and result in injury.
Electrical work must be performed by trained, qualified installers and service mechanics in accordance with the code governing
such installation work, internal wiring regulations, and the manual. A dedicated circuit and the rated voltage must be used.
Insufficient power supply or improper installation may cause electrical shock or fire.
Use a cabtyre cable to connect wires in the indoor/outdoor units. Midway connection is not allowed. Improper connection or
fixing may cause a fire.
Wiring between the indoor unit and outdoor units must be well shaped so that the cover can be firmly placed. Improper
cover installation may cause increased heat, fire, or electrical shock at the terminal area.
Be sure to use only approved accessories or the specified parts. Failure to do so may cause the unit to fall, water leakage,
fire or electrical shock.
After the installation work. ensure that there is no leakage of refrigerant gas. If the refrigerant gas leaks out of the pipe into
the room and is heated by fire or something else from a fanheater, stove or gas range, it causes generation of poisonous gas.
Make sure the equipment is properly grounded. Do not connect the ground wire to a gas pipe, water pipe, lightning
conductor, or telephone earth wire. Improper earth work may be the cause of electrical shock.
Do not install the unit where flammable gas may leak. If there is any gas leakage or accumulation around the unit, it can
cause a fire.
Do not select a location for installation where there may be excessive water or humidity, such as a bathroom. Deterioration
of insulation nay cause electrical shock or fire.
Installation work must be performed following the instructions in this installation manual. Improper installation may cause
water leakage, electrical shock or fire. Check the following items before operating the unit.
- Be sure that the pipe connection is well placed and there are no leaks.
- Check that the service valve is open. If the service valve is closed, it may cause overpressure and result in compressor
damage. At the same time, if there is a leak in the connection part, it may cause air suction and overpressure, resulting
in damage to the unit or injury.
In a pump-down operation, be sure to stop the compressor unit before removing the refrigerant pipe. If removing the
refrigerant pipe while the compressor is operating with the service valve opened, it may cause air suction and overpressure,
resulting in damage to the unit or injury.
Do not modity the power cable, connect the cable midway, or use a multiple outlet extension cable. Doing so may cause
contact failure, insulation failure, or excess current, resulting in fire or electrical shock.
If you detect any damage, do not install the unit. Contact your dealer immediately.

FILE NO. SVM-10019
4
CAUTION
CAUTION
Exposure of unit to water or other moisture before installation could result in electric shock. Do not store it in a wet
basement or expose to rain or water.
After unpacking the unit, examine it carefully for possible damage. Report any damages to your distributor.
Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify
the noise level of the unit or where noise and discharged air might disturb neighbors.
Please read this installation manual carefully before installing the unit. It contains further important instructions
for proper installation.
This appliance must be connected to the main power supply by means of a circuit breaker depending on the
place where the unit is installed. Failure to do so may cause electrical shock.
Follow the instructions in this installation manual to arrange the drain pipe for proper drainage from the unit.
Ensure that drained water is discharged. Improper drainage can result is water leakage, causing water damage
to furniture.
Tighten the flare nut with a torque wrench using the prescribed method. Do not apply excess torque. Otherwise,
the nut may crack after a long period of usage and it may cause the leakage of refrigerant.
Wear gloves (heavy gloves such as cotton gloves) for installation work. Failure to do so may cause personal
injury when handling parts with sharp edges.
Do not touch the air intake section or the aluminum fins of the outdoor unit. It may cause injury.
Do not install the outdoor unit in a place which can be a nest for small animals. Small animals could enter and
contact internal electrical parts, causing a failure or fire.
Request the user to keep the place around the unit tidy and clean.
Make sure to conduct a trial operation after the installation work, and explain how to use and maintain the unit
to the customer in accordance with the manual. Ask the customer to keep the operation manual along with the
installation manual.
FILE NO. SVM-10019
5
FILE NO. SVM-10019
Unit model Indoor RAS-09LKV-UL RAS-12LKV-UL
Outdoor RAS-09LAV-UL RAS-12LAV-UL
Cooling capacity (Btu/h) 9000 12000
Cooling capacity range (Btu/h) 3750 -10580 2750 - 13950
Heating capacity (Btu/h) 10800 14200
Heating capacity range (Btu/h) 3070 - 16350 3070 - 19000
Power supply
Electric Indoor Operation mode Cooling Heating Cooling Heating
characteristic Running current (A) 0.22 0.20 0.25 0.23
Power consumption (W) 35 40 30 35
Power factor (%) 76 76 66 66
Outdoor Operation mode Cooling Heating Cooling Heating
Running current (A) 3.46 3.13 5.26 4.76
Power consumption (W) 655 760 920 1055
Power factor (%) 91 94 95 95
Starting current (A) 3.68 3.33 4.81/4.35 5.51/4.99
EER (Cooling/Heating) (Btu/W.h) 13.0/13.5 12.6 / 13.0
SEER (Btu/W.h) / HSPF (w/w)
Operating Indoor High (Cooling/Heating) (dB-A) 39/40 45/46
noise Medium (Cooling/Heating) (dB-A) 34/35 40/41
Low (Cooling/Heating) (dB-A) 27/29 30/32
Outdoor (Cooling/Heating) (dB-A) 47/47 50/50
Indoor unit Unit model RAS-09LKV-UL RAS-12LKV-UL
Dimension Height in. (mm) 10-25/32 (275) 10-25/32 (275)
Width in. (mm) 31-1/8 (790) 31-1/8 (790)
Depth in. (mm) 8-1/16 (205) 8-1/16 (205)
Net weight lbs (kg) 20 (9) 20 (9)
Fan motor output (W) 20 30
Air flow rate (Cooling/Heating) cfm (m
3
/min) 303/335 (8.6)/(9.5) 406/438 (11.5/12.4)
Outdoor unit Unit model RAS-09LAV-UL RAS-12LAV-UL
Dimension Height in. (mm) 21-11/16 (550) 21-11/16 (550)
Width in. (mm) 30-11/16 (780) 30-11/16 (780)
Depth in. (mm) 11-7/16 (290) 11-7/16 (290)
Net weight lbs (kg) 75 (34) 88 (39)
Compressor Motor output (w) 750 750
Type
Model DA89X1C-23FZ2 DA111A1F-20F1
Fan motor output (W) 43 43
Air flow rate (Cooling/Heating) cfm (m
3
/min) 1060/1060 (30)/(30) 1395/1236 (39.5/35.0)
Piping Type Flare connection Flare connection
connection Indoor unit Liquid side in. (mm) 1/4 (6.35) 1/4 (6.35)
Gas side in. (mm) 3/8 (9.92) 3/8 (9.92)
Outdoor unit Liquid side in. (mm) 1/4 (6.35) 1/4 (6.35)
Gas side in. (mm) 3/8 (9.92) 3/8 (9.92)
Maximum length ft. (m)
Maximum chargeless length ft. (m) 50 (15) 50 (15)
Maximum height difference ft. (m) 33 (10) 33 (10)
Refrigerant Name of refrigerant R410A R410A
Weight lbs (kg) 1.77 (0.8) 2.43 (1.10)
Wiring Power supply
connection Interconnection 4Wires:includes earth 4Wires:includes earth
Usable temperature range Indoor (Cooling/Heating) F (C) 70-90 / 32-82 (21-32/0-28) 70-90 / 32-82 (21-32/0-28)
Outdoor (Cooling/Heating) F (C) 14-115 / 5-75 (-10-46/-15-24) 14-115 / 5-75 (-10-46/-15-24)
* The specifications may be subject to change without notice for purpose of improvement.
20.0/10.0
66 (20)
23.0/9.5
66 (20)
Single rotary type with DC-inverter
variable speed control
Twin rotary type with DC-inverter
variable speed control
1Ph, 60Hz, 208V/230V 1Ph, 60Hz, 208V/230V
3Wires:includes earth (Outdoor) 3Wires:includes earth (Outdoor)
2. SPECIFICATIONS
6
7
120
100
80
60
40
20
0
100
95
90
85
80
75
70
65
60
55
50
105
90 91 93 95 97 99 100 102 104 106 108 109 111 113 115
C
a
p
a
c
i
t
y

R
a
t
i
o

(
%
)
C
a
p
a
c
i
t
y

R
a
t
i
o

(
%
)
Capacity Ratio: 100% =
9000 Btu/h (RAS-09LKV-UL)
RAS-09LKV-UL
RAS-12LKV-UL
2-2. Operation Characteristic Curve
<Cooling> <Heating>
2-3. Capacity Variation Ratio According to Temperature
<Cooling> <Heating>
Condition
Indoor: DB70F/WB60F
Indoor Air-Flow Volume: High
Pipe Length: 16 ft (5m)
Capacity Ratio: 100% =
(DB21.1C/WB15.6C)
FILE NO. SVM-10019
0
1
2
3
4
5
6
7
8
0 10 20 30 40 50 60 70 80 90 100 110 120
Compressor Speed (rps)
C
u
r
r
e
n
t

(
A
)
0
1
2
3
4
5
6
7
8
0 10 20 30 40 50 60 70 80 90 100 110 120
Compressor Speed (rps)
C
u
r
r
e
n
t

(
A
)
Conditions
Indoor:DB80
o
F/WB67
o
F
(DB26.7
o
C/WB19.4
o
C)
Outdoor:DB98
o
F/WB75
o
F
(DB35
o
C/WB23.9
o
C)
IndoorAirFlow:High
PipLength:5m
Voltage:230V
Conditions
Indoor:DB70
o
F/WB60
o
F
(DB21.1
o
C/WB15.6
o
C)
Outdoor:DB47
o
F/WB43
o
F
(DB8.3
o
C/WB6.1
o
C)
IndoorAirFlow:High
PipLength:5m
Voltage:230V
RAS-09LKV-UL
RAS-12LKV-UL
RAS-12LKV-UL
RAS-09LKV-UL
RAS-09LKV-UL
RAS-12LKV-UL
Voltage : 230V
Condition
Indoor: DB80F/WB67F
Indoor Air-Flow Volume: High
Pipe Length: 16 ft (5m)
(DB26.7C/WB19.4C)
Voltage : 230V
Outdoor Temperature (C)
(32)(33)(34)(35)(36)(37)(38)(39)(40)(41)(42)(43)(44)(45)(46)
Outdoor Temperature (C)
5 14 23 32 41 50
(-15) (-10) (-5) (0) (5) (10)
8
3. REFRIGERANT R410A
This air conditioner adopts the new refrigerant HFC
(R410A) which does not damage the ozone layer.
The working pressure of the new refrigerant R410A
is 1.6 times higher than conventional refrigerant
(R22). The refrigerating oil is also changed in
accordance with change of refrigerant, so be careful
that water, dust, and existing refrigerant or refrigerat-
ing oil are not entered in the refrigerant cycle of the
air conditioner using the new refrigerant during
installation work or servicing time.
The next section describes the precautions for air
conditioner using the new refrigerant. Conforming to
contents of the next section together with the
general cautions included in this manual, perform
the correct and safe work.
3-1. Safety During Installation/Servicing
As R410As pressure is about 1.6 times higher than
that of R22, improper installation/servicing may
cause a serious trouble. By using tools and materi-
als exclusive for R410A, it is necessary to carry out
installation/servicing safely while taking the following
precautions into consideration.
1. Never use refrigerant other than R410A in an air
conditioner which is designed to operate with
R410A.
If other refrigerant than R410A is mixed, pressure
in the refrigeration cycle becomes abnormally
high, and it may cause personal injury, etc. by a
rupture.
2. Confirm the used refrigerant name, and use tools
and materials exclusive for the refrigerant R410A.
The refrigerant name R410A is indicated on the
visible place of the outdoor unit of the air condi-
tioner using R410A as refrigerant. To prevent
mischarging, the diameter of the service port
differs from that of R22.
3. If a refrigeration gas leakage occurs during
installation/servicing, be sure to ventilate fully.
If the refrigerant gas comes into contact with fire,
a poisonous gas may occur.
4. When installing or removing an air conditioner, do
not allow air or moisture to remain in the refrig-
eration cycle. Otherwise, pressure in the refrig-
eration cycle may become abnormally high so
that a rupture or personal injury may be caused.
5. After completion of installation work, check to
make sure that there is no refrigeration gas
leakage.
If the refrigerant gas leaks into the room, coming
into contact with fire in the fan-driven heater,
space heater, etc., a poisonous gas may occur.
6. When an air conditioning system charged with a
large volume of refrigerant is installed in a small
room, it is necessary to exercise care so that,
even when refrigerant leaks, its concentration
does not exceed the marginal level.
If the refrigerant gas leakage occurs and its
concentration exceeds the marginal level, an
oxygen starvation accident may result.
7. Be sure to carry out installation or removal
according to the installation manual.
Improper installation may cause refrigeration
trouble, water leakage, electric shock, fire, etc.
8. Unauthorized modifications to the air conditioner
may be dangerous. If a breakdown occurs
please call a qualified air conditioner technician
or electrician.
Improper repairs may result in water leakage,
electric shock and fire, etc.
3-2. Refrigerant Piping Installation
3-2-1. Piping Materials and Joints Used
For the refrigerant piping installation, copper pipes
and joints are mainly used. Copper pipes and joints
suitable for the refrigerant must be chosen and
installed. Furthermore, it is necessary to use clean
copper pipes and joints whose interior surfaces are
less affected by contaminants.
1. Copper Pipes
It is necessary to use seamless copper pipes
which are made of either copper or copper alloy
and it is desirable that the amount of residual oil
is less than 40 mg/10 m. Do not use copper
pipes having a collapsed, deformed or discolored
portion (especially on the interior surface).
Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
As an air conditioner using R410A incurs pres-
sure higher than when using R22, it is necessary
to choose adequate materials.
Thicknesses of copper pipes used with R410A
are as shown in Table 3-2-1. Never use copper
pipes thinner than 0.0315 in. (0.8 mm) even when
it is available on the market.
FILE NO. SVM-10019
9
Table 3-2-1 Thicknesses of annealed copper pipes
Nominal diameter (in.)
1/4
3/8
1/2
Outer diameter (mm)
6.35
9.52
12.70
Thickness in. (mm)
R410A R22
0.0315 (0.80) 0.0315 (0.80)
0.0315 (0.80)
2. Joints
For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.
a) Flare J oints
Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds
20 mm. In such a case, socket joints can be used.
Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 3-2-3 to 3-2-6 below.
b) Socket J oints
Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose
diameter is larger than 0.7874 in. (20 mm).
Thicknesses of socket joints are as shown in Table 3-2-2.
Table 3-2-2 Minimum thicknesses of socket joints
Nominal diameter (in)
1/4
3/8
1/2
Reference outer diameter of
copper pipe jointed (mm)
6.35
9.52
12.70
Minimum joint thickness
in. (mm)
0.0197 (0.50)
0.0236 (0.60)
0.0276 (0.70)
3-2-2. Processing of Piping Materials
When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not
enter the pipe interior, that no other oil than lubricating oils used in the installed air-water heat pump is used,
and that refrigerant does not leak. When using lubricating oils in the piping processing, use such lubricating oils
whose water content has been removed. When stored, be sure to seal the container with an airtight cap or any
other cover.
1. Flare processing procedures and precautions
a) Cutting the Pipe
By means of a pipe cutter, slowly cut the pipe so that it is not deformed.
b) Removing Burrs and Chips
If the flared section has chips or burrs, refrigerant leakage may occur.
Carefully remove all burrs and clean the cut surface before installation.
c) Insertion of Flare Nut
0.0315 (0.80)
0.0315 (0.80) 0.0315 (0.80)
FILE NO. SVM-10019
10
A
D
d) Flare Processing
Make certain that a clamp bar and copper
pipe have been cleaned.
By means of the clamp bar, perform the flare
processing correctly.
Use either a flare tool for R410A or conven-
tional flare tool.
Flare processing dimensions differ according
to the type of flare tool. When using a con-
ventional flare tool, be sure to secure dimen-
sion A by using a gauge for size adjustment. Fig. 3-2-1 Flare processing dimensions
Table 3-2-3 Dimensions related to flare processing for R410A
Nominal
diameter
1/4
3/8
1/2
Outer
diameter
(mm)
6.35
9.52
12.70
Thickness
in. (mm)
0.0315 (0.8)
0.0315 (0.8)
0.0315 (0.8)
A in. (mm)
Flare tool for R410A
clutch type
0 to 0.0197 (0 to 0.5)
0 to 0.0197 (0 to 0.5)
0 to 0.0197 (0 to 0.5)
Conventional flare tool
Clutch type Wing nut type
0.0394 to 0.0591
(1.0 to 1.5)
0.0394 to 0.0591
(1.0 to 1.5)
0.0394 to 0.0591
(1.0 to 1.5)
0.0591 to 0.0787
(1.5 to 2.0)
0.0591 to 0.0787
(1.5 to 2.0)
0.07874 to 0.0984
(2.0 to 2.5)
Nominal
diameter
1/4
3/8
1/2
Outer
diameter
(mm)
6.35
9.52
12.70
Thickness
in. (mm)
0.0315 (0.8)
0.0315 (0.8)
0.0315 (0.8)
A in. (mm)
Flare tool for R22
clutch type
0 to 0.0197 (0 to 0.5)
0 to 0.0197 (0 to 0.5)
0 to 0.0197 (0 to 0.5)
Conventional flare tool
Clutch type Wing nut type
0.0197 to 0.0394
(0.5 to 1.0)

0.0394 to 0.0591
(1.0 to 1.5)

0.0197 to 0.0394
(0.5 to 1.0)

0.0394 to 0.0591
(1.0 to 1.5)

0.0197 to 0.0394
(0.5 to 1.0)

0.0591 to 0.0787
(1.5 to 2.0)

Table 3-2-4 Dimensions related to flare processingf or R22
Table 3-2-5 Flare and flare nut dimensions for R410A
Nominal
diameter
1/4
3/8
1/2
Outer diameter
(mm)
6.35
9.52
12.70
Thickness
in. (mm)
0.0315 (0.8)
Dimension in. (mm)
A B C D
0.358 (9.1) 0.362 (9.2) 0.256 (6.5) 0.512 (13)
0.520 (13.2) 0.531 (13.5) 0.382 (9.7) 0.787 (20)
0.630 (16.0)
0.508 (12.9)
Flare nut width
in. (mm)
0.669 (17)
0.866 (22)
1.024 (26)
0.0315 (0.8)
0.0315 (0.8) 0.653 (16.6)
0.906 (23)
FILE NO. SVM-10019
in.
in.
in.
11
4
3

t
o

4
5

4
5
to
4
6

B A C D
Table 3-2-6 Flare and flare nut dimensions for R22
Fig. 3-2-2 Relations between flare nut and flare seal surface
2. Flare Connecting Procedures and Precautions
a) Make sure that the flare and union portions do not have any scar or dust, etc.
b) Correctly align the processed flare surface with the union axis.
c) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is
the same as that for conventional R22. Incidentally, when the torque is weak, the gas leakage may occur.
When it is strong, the flare nut may crack and may be made non-removable. When choosing the tighten-
ing torque, comply with values designated by manufacturers. Table 3-2-7 shows reference values.
NOTE :
When applying oil to the flare surface, be sure to use oil designated by the manufacturer.
If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.
Table 3-2-7 Tightening torque of flare for R410A [Reference values]
Nominal
diameter
1/4
3/8
1/2
Outer diameter
(mm)
6.35
9.52
12.70
Tightening torque
lbf.ft (Nm)
10 to 13 (14 to 18)
24 to 31 (33 to 42)
37 to 46 (50 to 62)
Tightening torque of torque
wrenches available on the market
lbf.ft (Nm)
12 (16), 13 (18)
31 (42)
41 (55)
Nominal
diameter
1/4
3/8
1/2
Outer diameter
(mm)
6.35
9.52
12.70
Thickness
in. (mm)
0.0315 (0.8)
Dimension in. (mm)
A B C D
0.354 (9.0) 0.362 (9.2) 0.256 (6.5) 0.512 (13)
0.512 (13.0) 0.531 (13.5) 0.382 (9.7) 0.787 (20)
0.638 (16.2) 0.508 (12.9)
Flare nut width
in. (mm)
0.669 (17)
0.866 (22)
0.945 (24)
0.0315 (0.8)
0.0315 (0.8) 0.630 (16.0) 0.787 (20)
FILE NO. SVM-10019
in.
in.
12
3-3. Tools
3-3-1. Required Tools
The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is
changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing
dimensions and opposite side dimension of flare nut (For 1/2 in. 12.7mm) copper pipe) of the refrigerant
piping are lengthened.
The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge,
clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.
1. Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
2. Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
3. Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.
Tools exclusive for R410A (The following tools for R410A are required.)
Tools whose specifications are changed for R410A and their interchangeability
No.
1
2
3
4
5
6
7
8
9
10
Used tool
Flare tool
Copper pipe gauge for
adjusting projection
margin
Torque wrench
[(For 1/2 (12.7mm)]
Gauge manifold
Charge hose
Vacuum pump adapter
Electronic balance for
refrigerant charging
Refrigerant cylinder
Leakage detector
Charging cylinder
Usage
Pipe flaring
Flaring by
conventional flare tool
Connection of flare nut
Evacuating, refrigerant
charge, run check, etc.
Vacuum evacuating
Refrigerant charge
Refrigerant charge
Gas leakage check
Refrigerant charge
R410A
air-water heat pump installation
Existence of
new equipment
for R410A
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
(Note 2)
Whether conven-
tional equipment
can be used
*(Note 1)
*(Note 1)
Conventional air-water
heat pump installation
Whether new equipment
can be used with
conventional refrigerant
*(Note 1)
(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
(Note 2) Charging cylinder for R410A is being currently developed.
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary
as the general tools.
1. Vacuum pump
Use vacuum pump by attaching
vacuum pump adapter.
2. Torque wrench [For 1/4, 3/8 in.
( 6.35, 9.52mm)]
4. Reamer
5. Pipe bender
6. Level vial
7. Screwdriver (+, )
8. Spanner or Monkey wrench
9. Hole core drill [2-9/16 in. (65mm)]
10. Hexagon wrench
[Opposite side 3/16 in. (4mm)]
11. Tape measure
12. Metal saw
Also prepare the following equipments for other installation method and run check.
1. Clamp meter
2. Thermometer
3. Insulation resistance tester
4. Electroscope
3. Pipe cutter
FILE NO. SVM-10019
13
Connect the charge hose to packed valve service
port at the outdoor units gas side.
Recover the refrigerant, and check no refrigerant
remains in the equipment.
(For refrigerant charging, see the figure below.)
Connect the charge hose to the vacuum pump
adapter.
Open fully both packed valves at liquid and gas
sides.
Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pumps
power switch. Then, evacuating the refrigerant in the
cycle.
When the compound gauges pointer has indicated
14.7 Psi (0.1 Mpa) or 29.9 inHg (76 cmHg),
place the handle Low in the fully closed position, and
turn off the vacuum pump's power switch.
Keep the status as it is for 1 to 2 minutes, and ensure
that the compound gauges pointer does not return.
Set the refrigerant cylinder to the electronic balance,
connect the connecting hose to the cylinder and the
connecting port of the electronic balance, and charge
liquid refrigerant.
(Indoor Unit)
(Outdoor unit)
Opened
Opened
Refrigerant cylinder
(with siphon)
Check valve
Open/close
valve for charging
Electronic balance for refrigerant charging
Opened
Closed
Service port
3-4. Recharging of Refrigerant
When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps.
1. Never charge refrigerant exceeding the specified amount.
2. If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.
3. Do not carry out additional charging.
When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the
specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high
pressure, and may cause a rupture or personal injury.
Fig. 3-4-1 Configuration of refrigerant charging
FILE NO. SVM-10019
14
Gauge manifold
[ Cylinder with siphon ] [ Cylinder without siphon ]
OUTDOOR unit
Gauge manifold
OUTDOOR unit
Refrigerant
cylinder
Electronic
balance
R e f r i g e r a n t
c y l i n d e r
Electronic
balance
Siphon
1. Be sure to make setting so that liquid can be charged.
2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.
It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.
Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the
cylinder upside down if cylinder is not equipped with siphon.
R410A refrigerant is HFC mixed refrigerant.
Therefore, if it is charged with gas, the composi-
tion of the charged refrigerant changes and the
characteristics of the equipment varies.
3-5. Brazing of Pipes
3-5-1. Materials for Brazing
1. Silver brazing filler
Silver brazing filler is an alloy mainly composed
of silver and copper. It is used to join iron, copper
or copper alloy, and is relatively expensive though
it excels in solderability.
2. Phosphor bronze brazing filler
Phosphor bronze brazing filler is generally used
to join copper or copper alloy.
3. Low temperature brazing filler
Low temperature brazing filler is generally called
solder, and is an alloy of tin and lead. Since it is
weak in adhesive strength, do not use it for
refrigerant pipes.
1. Phosphor bronze brazing filler tends to react
with sulfur and produce a fragile compound
water solution, which may cause a gas
leakage. Therefore, use any other type of
brazing filler at a hot spring resort, etc., and
coat the surface with a paint.
2. When performing brazing again at time of
servicing, use the same type of brazing filler.
3-5-2. Flux
1. Reason why flux is necessary
By removing the oxide film and any foreign
matter on the metal surface, it assists the flow
of brazing filler.
In the brazing process, it prevents the metal
surface from being oxidized.
By reducing the brazing fillers surface tension,
the brazing filler adheres better to the treated
metal.
Fig. 3-4-2
FILE NO. SVM-10019
15
Nitrogen gas
cylinder
Pipe
Flow meter
M
Stop valve
From Nitrogen cylinder
Nitrogen
gas
Rubber plug
2. Characteristics required for flux
Activated temperature of flux coincides with the
brazing temperature.
Due to a wide effective temperature range, flux
is hard to carbonize.
It is easy to remove slag after brazing.
The corrosive action to the treated metal and
brazing filler is minimum.
It excels in coating performance and is harm-
less to the human body.
As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and
shape of treated metal, type of brazing filler and
brazing method, etc.
3. Types of flux
Noncorrosive flux
Generally, it is a compound of borax and boric
acid.
It is effective in case where the brazing tem-
perature is higher than 1472F (800C).
Activated flux
Most of fluxes generally used for silver brazing
are this type.
It features an increased oxide film removing
capability due to the addition of compounds
such as potassium fluoride, potassium chloride
and sodium fluoride to the borax-boric acid
compound.
4. Piping materials for brazing and used
brazing filler/flux
1. Do not enter flux into the refrigeration cycle.
2. When chlorine contained in the flux remains
within the pipe, the lubricating oil deteriorates.
Therefore, use a flux which does not contain
chlorine.
3. When adding water to the flux, use water
which does not contain chlorine (e.g. distilled
water or ion-exchange water).
4. Remove the flux after brazing.
3-5-3. Brazing
As brazing work requires sophisticated techniques,
experiences based upon a theoretical knowledge, it
must be performed by a person qualified.
In order to prevent the oxide film from occurring in
the pipe interior during brazing, it is effective to
proceed with brazing while letting dry Nitrogen gas
(N2) flow.
Never use gas other than Nitrogen gas.
1. Brazing method to prevent oxidation
1) Attach a reducing valve and a flow-meter to
the Nitrogen gas cylinder.
2) Use a copper pipe to direct the piping mate-
rial, and attach a flow-meter to the cylinder.
3) Apply a seal onto the clearance between the
piping material and inserted copper pipe for
Nitrogen in order to prevent backflow of the
Nitrogen gas.
4) When the Nitrogen gas is flowing, be sure to
keep the piping end open.
5) Adjust the flow rate of Nitrogen gas so that it
is lower than 0.03 cfm (0.05 m
3
/Hr) or 2.9 Psi
(0.02 MPa) by means of the reducing valve.
6) After performing the steps above, keep the
Nitrogen gas flowing until the pipe cools down
to a certain extent (temperature at which
pipes are touchable with hands).
7) Remove the flux completely after brazing.
Fig. 3-5-1 Prevention of oxidation during brazing
Piping material
Copper - Copper
Copper - Iron
Iron - Iron
Used brazing filler
Phosphor copper
Silver
Silver
Used flux
Do not use
Paste flux
Vapor flux
FILE NO. SVM-10019
16
4. CONSTRUCTION VIEWS
4-1. Indoor Unit
FILE NO. SVM-10019
4-2. Outdoor Unit
1
0
-
7
/
8

(
2
7
5
)
2-23/32 (69)
3-17/32 (90)
3-17/32 (90)
23-5/8 (600)
17-5/32 ( 436) WIRE GUARD
1
2
-
1
9
/
3
2

(
3
2
0
)
4-1/4 (108) 4-15/16 (125)
3
-
3
/
8

(
8
6
)
1 ( 25) Water Drain Outlet
4
-
9
/
1
6

(
1
1
6
)
A
B
13-1/2 (342)
COVER
PACKED VALVE
11-7/16 (290)
2
1
-
1
1
/
1
6

(
5
5
0
)
View Z
5
-
9
/
1
6

(
1
4
1
)
2
-
3
/
3
2

(
5
3
)
3
-
1
5
/
3
2

(
8
8
)
Liquid side
(Flare Nut : 1/4 ( 6.35))
Gas side
(Model 09,12k Flare Nut : 3/8 ( 9.52))
Service Port
1-27/64 (36)
1-31/32 (50)
(R5.5)
R7/32
( 6) Hole
1/4 Hole
(R15)
R19/32
1
2
-
1
9
/
3
2

(
3
2
0
)
23-5/8 (600)
1
2
-
3
/
6
4

(
3
0
6
)
1-27/64 (36)
1-31/32 (50)
R19/32 (R15)
( 6)-Hole
1/4-Hole
23-5/8 (600)
7/16x9/16 Oval-Hole
( 11x14) Oval Hole
1
2
-
1
9
/
3
2

(
3
2
0
)
1
2
-
3
/
6
4

(
3
0
6
)
Detail-B (Front Leg)
23-5/8 (600)
1
2
-
1
9
/
3
2

(
3
2
0
)
3-15/16 Inch or more
(100 mm. or more)
23-5/8 Inch or more
(600 mm. or more)
Air Inlet
Air Outlet
2-R7/32x43/64L (R5.5x17L) U-Shape
(For 5/16~ 13/32 ( 8~ 10) Anchor Bolt)
2- 7/16x9/16 ( 11x14) Oval-Hole
(For 5/16~ 13/32 ( 8~ 10) Anchor Bolt)
3-15/16 Or more
(100 mm or more)
23-5/8 Or more
(600 mm or more)
View Z
Detail-A (Rear Leg)

Unit : Inch (mm)
FILE NO. SVM-10019
17
18
5. WIRING DIAGRAM
5-1. RAS-09LKV-UL / RAS-09LAV-UL
FILE NO. SVM-10019
Outdoor Terminal Block
POWER SUPPLY
Indoor Terminal Block
L1 L2 S
L1 L2 S
Heat
Exchanger
B
L
K
W
H
I
R
E
D
G
R
N
&
Y
E
L
(From Outdoor Unit)
208/230-1-60
3 1
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
1010
1111
1
2
3
4
5
6
7
8
9
10
11
(WHI)
CN10
(YEL)
CN21
W
i
r
e
l
e
s
s

U
n
i
t

A
s
s
e
m
b
l
y
M
C
C
-
5
0
4
4
WHI
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
1 1
2 2
1 1
2 2
(BLU)
CN62
(WHI)
CN61 Thermo Sensor
(TA)
Heat Exchanger Sensor
(TC)
1 1
2 2
3 3
4 4
5 5
1 1
2 2
3 3
4 4
5 5
1 1
2 2
3 3
1 1
2 2
3 3
4 4
5 5
6 6
5 5
4 4
3 3
2 2
1 1
(WHI)
CN32
(WHI)
CN33
(WHI)
CN31
WHI
YEL
YEL
YEL
YEL
1
2
3
4
(WHI)
CN22
Color indication
BRW:BROWN
YEL:YELLOW
BLK:BLACK
RED:RED
BLU:BLUE
WHI:WHITE
GRN & YEL:
GREEN & YELLOW
Fan Motor
AC Motor
P
o
w
e
r

S
u
p
p
l
y

C
i
r
c
u
i
t
Main PC Board
WP-020
DC5V
DC12V
T
3
.
1
5
A

F
u
s
e

F
0
1

CN01 CN51
Varistor
Line
Filter
+
Louver Motor
~
1 1
2 2
3 3
3 3
2 2
1 1
3 3
2 2
1 1
3 3
2
1 1
2 2
1 1
6 6
5 5
4 4
3 3
2
1 1
2 2
1
2
1
L1
1

~ ~
L2 S
1 3
1
1
2
1
2
3
L1 L2

COMPRESSOR
RED
WHI
BLK
YEL
YEL
BRW
YEL
ORN
REACTOR
P06
P25
P24
R221
P.C.BOARD
(MCC-5009)
R220
R219
L03
R321
CN300
CN700
L01
CN603
TS
(SUCTION PIPE
TEMP. SENSOR)
TO
(OUTDOOR
TEMP. SENSOR)
TD
(DISCHARGE PIPE
TEMP. SENSOR)
TE
(CONDENSER PIPE
TEMP. SENSOR)
2
1
PRESSURE SW.
CN602
VARISTOR
SURGE
ABSORBER
P02
WHI
POWER
SUPPLY
208/230-1-60
P01
BLK
P07
BLK
P03
ORN
CN601
CN600
CN500
BLK
WHI
RED
FAN MOTOR
PULSE MOTOR VALVE
VARISTOR
R320
R319
C13
C12 C14
Q200~205
IGBT
Q300~305
MOS-FET
DB01
POWER
RELAY
DB02
Q404
PUR
RELAY
CT
F03
FUSE
T3.15A
AC250V
P22
P20
P23
P21
P35
P34
P19
P33 P31 P30
CN701 P32
P18
P11
P08
P05
P04
CM FM
PMV
BLK:BLACK
BLU:BLUE
RED:RED
GRY:GRAY
PNK:PINK
WHI:WHITE
BRW:BROWN
ORN:ORANGE
YEL:YELLOW
PUR:PURPLE
COLOR IDENTIFICATION
F01
FUSE
25A
AC250V
COIL
FOR
4WAY
VALVE
1 2
1 2
REACTOR
5-2. RAS-12LKV-UL /RAS-12LAV-UL
19
FILE NO. SVM-10019
1 1
2 2
1 1
2 2
1 1
2 2
3 3
4 4
5 5
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
1010
1111
1212
1313
1414
1515
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
1010
1111
1212
1313
1414
1515
1 1
2 2
3 3
4
1
2
3
4
4
5 5
1 1
3 3
4 4
5 5
6 6
Outdoor Terminal Block
POWER SUPPLY
Indoor Terminal Block
L1 L2 S
L1 L2 S
3 1
Heat
Exchanger
GRN&YEL
B
L
K
B
L
K
(BLU)
W
H
I
R
E
D
(From Outdoor Unit)
208/230-1-60
SHEET METAL
CN02
CN01 CN51
CN62
(WHI)
CN61
(WHI)
CN32
(WHI)
WHI
YEL
YEL
YEL
YEL
CN31
(WHI)
CN22
(WHI)
CN10
(WHI)
CN21
T
3
.
1
5
A

2
5
0
V
A
C
F
u
s
e

F
0
1
Thermo Sensor
(TA)
Heat Exchanger Sensor
(TC)
W
i
r
e
l
e
s
s

U
n
i
t

A
s
s
e
m
b
l
y
M
C
C
-
5
0
4
4
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
WHI
Varistor
Line
Filter
DC5V
DC12V
P
o
w
e
r

S
u
p
p
l
y

C
i
r
c
u
i
t
Main PC Board
MCC-5045
Louver Motor
Fan Motor
DC Motor
Color indication
BRW:BROWN
YEL:YELLOW
BLK:BLACK
RED:RED
BLU:BLUE
WHI:WHITE
GRN & YEL:
GREEN & YELLOW
1 1
2 2
3 3
3 3
2 2
1 1
3 3
2 2
1 1
3 3
2
1 1
2 2
1 1
6 6
5 5
4 4
3 3
2
1 1
2 2
1
2
1
L1
1

~ ~
L2 S
1 3
1
1
2
1
2
3
L1 L2

COMPRESSOR
RED
WHI
BLK
YEL
YEL
BRW
YEL
ORN
REACTOR
P06
P25
P24
R221
P.C.BOARD
(MCC-5009)
R220
R219
L03
R321
CN300
CN700
L01
CN603
TS
(SUCTION PIPE
TEMP. SENSOR)
TO
(OUTDOOR
TEMP. SENSOR)
TD
(DISCHARGE PIPE
TEMP. SENSOR)
TE
(CONDENSER PIPE
TEMP. SENSOR)
2
1
PRESSURE SW.
CN602
VARISTOR
SURGE
ABSORBER
P02
WHI
POWER
SUPPLY
208/230-1-60
P01
BLK
P07
BLK
P03
ORN
CN601
CN600
CN500
BLK
WHI
RED
FAN MOTOR
PULSE MOTOR VALVE
VARISTOR
R320
R319
C13
C12 C14
Q200~205
IGBT
Q300~305
MOS-FET
DB01
POWER
RELAY
DB02
Q404
PUR
RELAY
CT
F03
FUSE
T3.15A
AC250V
P22
P20
P23
P21
P35
P34
P19
P33 P31 P30
CN701 P32
P18
P11
P08
P05
P04
CM FM
PMV
BLK:BLACK
BLU:BLUE
RED:RED
GRY:GRAY
PNK:PINK
WHI:WHITE
BRW:BROWN
ORN:ORANGE
YEL:YELLOW
PUR:PURPLE
COLOR IDENTIFICATION
F01
FUSE
25A
AC250V
COIL
FOR
4WAY
VALVE
1 2
1 2
REACTOR
~
20
6. SPECIFICATIONS OF ELECTRICAL PARTS
6-1. Indoor Unit

L =10mH, 16A
2 Outdoor fan motor
3 Suction temp. sensor (TS sensor) 10k (25C)
4 Discharge temp. sensor (TD sensor) 62k (20C)
5 Outside air temp. sensor (TO sensor) 10k (25C)
6 Heat exchanger temp. sensor (TE sensor) 10k (25C)
7 Terminal block (5P) 30A, AC600V
RAS-09LAV-UL
RAS-12LAV-UL
9 COIL FOR P.M.V. DC12V
10 Coil for 4-way valve
CAM-MD 12TCTH-4
STF
Compressor
(Inverter attached)
(Inverter attached)
(Inverter attached)
8
(Inverter attached)
DA89X1C-23FZ2
DA111A1F-20F2
CH-57
ICF-340UA40-2 DC340V, 40W
11 Pressure SW.

ACB-4UB82W 4.7 MPa
RAS-09LKV-UL

(for indoor)
RAS-12LKV-UL
2 Room temp. sensor (TA-sensor) 10k at 25C
3 Heat exchanger temp. sensor (TC-sensor) 10k at 25C
4 Louver motor Output (Rated) 1W, 16 poles, DC12V
( )
( )
MP24Z3T
AFS-220-20-4D AC240V, 20W
1
ICF-340U30-2 AC220V, 20W
No.
Fan motor
Parts name Specifications Type
No. Parts name Model name Rati ng
Reactor 1
3-phases 4-poles 750W
3-phases 4-poles 680W
FILE NO. SVM-10019
6-2. Outdoor Unit
21
7. REFRIGERANT CYCLE DIAGRAM
7-1. Refrigerant Cycle Diagram
RAS-09LKV-UL / RAS-09LAV-UL
NOTE :
The maximum pipe length of this air conditioner is 66ft (20 m). When the pipe length exceeds 50ft (15m), the additional
Deoxidized copper pipe
Outer dia. : 3/8 in (9.52mm)
Thickness : 1/32 in (0.8mm)
NOTE : Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
INDOOR UNIT
T1
TO
Temp. measurement
TC
TA
Indoor heat
exchanger
Cross flow fan
Outer dia. : 1/4 in (6.35mm)
Thickness : 1/32 (0.8mm)
Sectional shape
of heat insulator
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P Pressure measurement
Gauge attaching port
Vacuum pump connecting port
Strainer
Pulse Modulating
valve at liquid side
TD
4-way valve
Compressor
DA89X1C-23FZ2
TS
T2
Outdoor heat
exchanger
Temp. measurement
Propeller fan
Refrigerant amount : 1.77lbs (0.80kg)
OUTDOOR UNIT
Muffler
Muffler
TE
Min. : 6.6ft (2m)
Chargeless : 50ft (15m)
Strainer
Max. : 66ft (20m)
Charge : 0.22oz/ft
(51 to 66ft)
charging of refrigerant, 0.22 oz/ft (20g/m) for the part of pipe exceeded 50ft (15m) is required. [(Max. 0.22 lbs (100g)]
[20g/m (16 to 20m)]
FILE NO. SVM-10019
High Pressure switch
Fusible plug
22
RAS-12LKV-UL / RAS-12LAV-UL
NOTE :
The maximum pipe length of this air conditioner is 66ft (15 m). When the pipe length exceeds 50ft (15m), the additional
Max. : 66ft (20m)
Outer dia. : 3/8 in. (9.52mm)
Thickness : 1/32 in. (0.8mm)

NOTE : Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
INDOOR UNIT
T1
TO
Temp. measurement
Indoor heat
exchanger
Cross flow fan
Outer dia. : 1/4 in. (6.35mm)
Thickness : 1/32 in. (0.8mm)
Sectional shape
of heat insulator
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Gauge attaching port
Vacuum pump connecting port
Strainer
Pulse Modulating
valve at liquid side
1.2 x 80
1.2 x 80
TD
4-way valve
Compressor
DA111A1F-20F1
TS
T2
Outdoor heat
exchanger
Split capillary
Temp. measurement
Propeller fan
Refrigerant amount : 2.43 lbs (1.10kg)
OUTDOOR UNIT
Muffler
Muffler
TE
TC
TA
charging of refrigerant, 0.22 oz/ft (20g/m) for the part of pipe exceeded 15m is required. [Max. 0.22 lbs (100g)]
Min. : 6.6ft (2m)
Chargeless : 50 ft (15m)
Charge : 0.22oz/ft
(51 to 66 ft)
[20g/m (16 to 20m)]
FILE NO. SVM-10019
7-2. Operation Data
<Cooling>
Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor
condition(C) RAS- pressure pipe temp. fan mode fan mode revolution
Indoor Outdoor P Psia (MPa) T1 F (C) T2 F (C) (rps)
80/67 98/75 137 to 160 54 to 57 99 to 102
(26.7/19.4) (35/23.9) (0.9 to 1.1) (12 to 14) (37 to 39)
116 to 145 52 to 55 104 to 107
(0.8 to 1.0) (11 to 13) (42 to 44)
<Heating>
Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor
condition(C) RAS- pressure pipe temp. fan mode fan mode revolution
Indoor Outdoor P Psia (MPa) T1 F (C) T2 F (C) (rps)
70/60 47/43 363 to 392 102 to 105 32 to 37
(21.1/15.6) (8.3/6.1) (2.5 to 2.7) (39 to 41) (0 to 3)
377 to 406 106 to 106 32 to 36
(2.6 to 2.8) (41 to 43) (0 to 2)
NOTES :
1. Measure surface temperature of heat exchanger pipe around center of heat exchaner path U bent.
(Thermistor themometer)
2. Connecting piping condition : 16 ft (5m)
62
High High 64
09LKV-UL
12LKV-UL
High High
12LKV-UL High High 77
High High 60 09LKV-UL
FILE NO. SVM-10019
23
24
8. CONTROL BLOCK DIAGRAM
8-1. Indoor Unit
M.C.U.
Indoor Unit Control Unit
From Outdoor Unit
208/230-1-60
Serial Signal Communication
(Operation Command and Information)
Serial Signal Transmitter/Receiver
Converter
(D.C circuit)
Noise Filter
Indoor
Fan Motor
Louver
Motor
Louver Motor
Drive Control
Indoor Fan
Motor Control
Initializing Circuit
Clock Frequency
Oscillator Circuit
Power Supply
Circuit
Infrared Rays, 36.7kHz Remote Controller
Thermo. Setting
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver AUTO Swing
Louver Direction Setting
Operation Mode Selection
AUTO, COOL, DRY, HEAT, FAN
REMOTE CONTROLLER
ECO
Hi-POWER
Heat Exchanger Sensor (Tc)
Room Temperature Sensor (Ta)
Infrared Rays Signal Receiver
and Indication
Functions
Cold draft preventing Function
3-minute Delay at Restart for Compressor
Fan Motor Starting Control
Processing
(Temperature Processing)
Timer
Serial Signal Communication
Clean Function
Operation (START/STOP)
COMFORT SLEEP
QUIET
SLEEP (1,3,5,9 OFF TIMER)
FILE NO. SVM-10019
25
8-2. Outdoor Unit (Inverter Assembly)
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FILE NO. SVM-10019
26
9. OPERATION DESCRIPTION
9-1. Outline of Air Conditioner Control
This air conditioner is a capacity-variable type air
conditioner, which uses AC or DC motor for the indoor
for motor and the outdoor fan motor. And the capacity-
proportional control compressor which can change the
motor speed in the range from 11 to 96 rps is
mounted. The DC motor drive circuit is mounted to the
indoor unit. The compressor and the inverter to control
fan motor are mounted to the outdoor unit.
The entire air conditioner is mainly controlled by the
indoor unit controller.
The indoor unit controller drives the indoor fan motor
based upon command sent from the remote controller,
and transfers the operation command to the outdoor
unit controller.
The outdoor unit controller receives operation com-
mand from the indoor unit side, and controls the
outdoor fan and the pulse Modulating valve. (P.M.V)
Besides, detecting revolution position of the compres-
sor motor, the outdoor unit controller controls speed of
the compressor motor by controlling output voltage of
the inverter and switching timing of the supply power
(current transfer timing) so that motors drive according
to the operation command.
And then, the outdoor unit controller transfers reversely
the operating status information of the outdoor unit to
control the indoor unit controller.
As the compressor adopts four-pole brushless
DC motor, the frequency of the supply power
from inverter to compressor is two-times cycles
of the actual number of revolution.
1. Role of indoor unit controller
The indoor unit controller judges the operation
commands from the remote controller and assumes
the following functions.
Judgment of suction air temperature of the indoor
heat exchanger by using the indoor temp. sensor.
(TA sensor)
Judgment of the indoor heat exchanger tempera-
ture by using heat exchanger sensor (TC sensor)
(Prevent-freezing control, etc.)
Louver motor control
Indoor fan motor operation control
LED (Light Emitting Diode) display control
Transferring of operation command signal (Serial
signal) to the outdoor unit
Reception of information of operation status
(Serial signal including outside temp. data) to the
outdoor unit and judgment/display of error
Air purifier operation control
2. Role of outdoor unit controller
Receiving the operation command signal (Serial
signal) from the indoor unit controller, the outdoor
unit performs its role.
Compressor operation control
Operation control of outdoor fan motor
P.M.V. control
4-way valve control
Operations followed to judgment
of serial signal from indoor side.
Detection of inverter input current and current
release operation
Over-current detection and prevention operation
to IGBT module (Compressor stop function)
Compressor and outdoor fan stop function when
serial signal is off (when the serial signal does not
reach the board assembly of outdoor control by
trouble of the signal system)
Transferring of operation information (Serial
signal) from outdoor unit controller to indoor unit
controller
Detection of outdoor temperature and operation
revolution control
Defrost control in heating operation (Temp.
measurement by outdoor heat exchanger and
control for 4-way valve and outdoor fan)
3. Contents of operation command signal
(Serial signal) from indoor unit controller to
outdoor unit controller
The following three types of signals are sent from
the indoor unit controller.
Operation mode set on the remote controller
Compressor revolution command signal defined
by indoor temperature and set temperature
(Correction along with variation of room tempera-
ture and correction of indoor heat exchanger
temperature are added.)
Temperature of indoor heat exchanger
For these signals ([Operation mode] and [Com-
pressor revolution] indoor heat exchanger tem-
perature), the outdoor unit controller monitors the
input current to the inverter, and performs the
followed operation within the range that current
does not exceed the allowable value.
4. Contents of operation command signal
(Serial signal) from outdoor unit controller
to indoor unit controller
The following signals are sent from the outdoor unit
controller.
The current operation mode
The current compressor revolution
Outdoor temperature
Existence of protective circuit operation
For transferring of these signals, the indoor unit
controller monitors the contents of signals, and
judges existence of trouble occurrence.
Contents of judgment are described below.
Whether distinction of the current operation
status meets to the operation command signal
Whether protective circuit operates
When no signal is received from the outdoor
unit controller, it is assumed as a trouble.
FILE NO. SVM-10019
27
9-2. Operation Description
1. Basic operation ........................................................................................................... 28
1. Operation control ................................................................................................... 28
2. Cooling/Heating operation ..................................................................................... 29
3. AUTO operation ..................................................................................................... 29
4. DRY operation........................................................................................................ 29
2. Indoor fan motor control ............................................................................................. 30
3. Outdoor fan motor control ........................................................................................... 32
4. Capacity control .......................................................................................................... 33
5. Current release control ............................................................................................... 33
6. Release protective control by temperature of indoor heat exchanger ........................ 34
7. Defrost control (Only in heating operation) ................................................................ 35
8. Louver control ............................................................................................................. 36
1) Louver position....................................................................................................... 36
2) Air direction adjustment ......................................................................................... 36
3) Swing ..................................................................................................................... 36
9. ECO operation ............................................................................................................ 37
10. Temporary operation................................................................................................... 38
11. Discharge temperature control ................................................................................... 38
12. Pulse Modulating valve (P.M.V.) control ..................................................................... 39
13. Self-Cleaning function ................................................................................................ 40
14. Remote-A or B selection ............................................................................................ 42
9-3. Auto Restart Function..
9-3-1. How to Cancel the A uto Restart Function ................................................................. 45
9-3-2. How to set the Au to Restar t Function ....................................................................... 46
9-3-3. Power Failure During Timer Operation ................................................................... 46
9-4. Remote Controller and Its Fuctions
9-4-1. Parts Name of Remote Contr oller ............................................................................. 47
9-4-2. Operation of remote control ...................................................................................... 47
15. QUIET mode ............................................................................................................. 43
16. COMFORT SLEEP mode ............ ............................................................................. 43
17. One-Touch Comfort ........................ .......................................................................... 43
18. Hi-POWER Mode ...................................................................................................... 44
9-4-3. Name and Functions of Indications on Remote Contr oller ....................................... 50
FILE NO. SVM-10019
19. FILTER Indicator ........................................................................................................ 44
28
Item
1. Basic
operation
Operation flow and applicable data, etc.
1. Operation control
Description
Receiving the users operation condition setup, the operation statuses of indoor/outdoor units are
controlled.
1) The operation conditions are selected by the remote controller as shown in the below.
2) A signal is sent by ON button of the remote controller.
3) The signal is received by a sensor of the indoor unit and processed by the indoor controllers as
shown in the below.
4) The indoor controller controls the indoor fan motor and louver motor.
5) The indoor controller sends the operation command to the outdoor controller, and sends/receives
the control status with a serial signal.
6) The outdoor controller controls the operation as shown in the left, and also controls the compres-
sor, outdoor fan motor, 4-way valve and pulse Modulating valve.
Remote controller
Indoor unit
Control contents of remote controller
ON/OFF (Air conditioner/Air purifier)
Operation select (COOL/HEAT/AUTO/DRY)
Temperature setup
Air direction
Swing
Air volume select (AUTO/LOW/LOW+/MED/MED+/HIGH)
ECO
ON timer setup
OFF timer setup
Hi-POWER
Indoor unit control
Command signal generating function of
indoor unit operation
Calculation function (temperature calculation)
Activation compensation function of indoor fan
Cold draft preventive function
Timer function
Indoor heat exchanger release control
Indoor fan motor
Louver motor
Outdoor unit
Outdoor unit control
Frequency control of inverter output
Waveform composite function
Calculation function
(Temperature calculation)
AD conversion function
Quick heating function
Delay function of compressor reactivation
Current release function
GTr over-current preventive function
Defrost operation function
Compressor
Outdoor fan motor
4-way valve
Pulse Modulating valve
(P.M.V.)
Signal receiving
Indoor unit control
Operation command
Serial signal send/receive
Selection of
operation conditions
ON/OFF
Serial signal send/receive
Inverter
~
COMFORT SLEEP
QUIET
PRESET
ONE-TOUCH
FILE NO. SVM-10019
29
Operation ON Setup of remote controller
Indoor fan motor control / Louver control / Operation Hz
Control (Requierment)
Indoor unit control
Sending of operation command signal
[ ]
Compressor revolution control / Outdoor fan motor control /
4-way valve control In cooling operation: ON
In heating operation: OFF
Pulse Modulating valve control
Item
1. Basic
operation
2. Cooling/Heating operation
Description
The operations are performed in the following parts by controls according to cooling/heating conditions.
1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal
starts being transferred form the indoor controller to the outdoor unit.
2) At the indoor unit side, the indoor fan is operated according to the contents of 2. Indoor fan
motor control and the louver according to the contents of 9. Louver control, respectively.
3) The outdoor unit controls the outdoor fan motor, compressor, pulse Modulating valve and
4-way valve according to the operation signal sent from the indoor unit.
3. AUTO operation
Selection of operation mode
As shown in the following figure, the operation starts by
selecting automatically the status of room temperature
(Ta) when starting AUTO operation.
*1. When reselecting the operation mode, the fan
speed is controlled by the previous operation mode.
4. DRY operation
DRY operation is performed according to the difference
between room temperature and the setup temperature as
shown below.
In DRY operation, fan speed is controlled in order to
prevent lowering of the room temperature and to avoid air
flow from blowing directly to persons.
1) Detects the room temperature (Ta) when
the DRY operation started.
2) Starts operation under conditions in the
left figure according to the temperature
difference between the room tempera-
ture and the setup temperature (Tsc).
Setup temperature (Tsc)
= Set temperature on remote controller
(Ts) + 0~1.0C (0 to 2F)
3) When the room temperature is lower
2F (1C) or less than the setup
temperature, turn off the compressor.
1) Detects the room temperature (Ta) when
the operation started.
2) Selects an operation mode from Ta in
the left figure.
3) Fan operation continues until an
operation mode is selected.
4) When AUTO operation has started
within 2 hours after heating operation
stopped and if the room temperature is
68F (20C) or more, the fan operation is
performed with Super Ultra LOW mode
for 3 minutes.
Then, select an operation mode.
5) In AUTO mode, either cooling or heating
operation will be selected. When room
temperature reach set temperature
commpressor will stop. In case that the
compressor stops for 15 minutes, the
Ts + 1
Ts 1
Ta
Cooling operation
Monitoring (Fan)
Heating operation
Tsc
+1.0 (0.5)
+2.0 (1.0)
F [ C]
Ta
Fan speed
L (W5)
(W5+W3) / 2
SUL (W3)
Operation Hz control (Include limit control)
FILE NO. SVM-10019
C
AUTO mode will reselect cooling or
heating operation.
30
Item
2. Indoor fan
motor control
<In cooling operation>
(This operation controls the fan speed at indoor unit side.)
The indoor fan (cross flow fan) is operated by the phase-
control induction motor. The fan rotates in 5 stages in
MANUAL mode, and in 5 stages in AUTO mode, respec-
tively. (Table 1)
Description
* Symbols
UH : Ultra High
H : High
M+ : Medium+
M : Medium
L+ : Low+
L : Low
L- : Low
UL : Ultra Low
SUL : Super Ultra Low
* The values of fan speed and air flow
volume indicate on the table are measured
when the louver is inclined downward.
Fan speed and air flow volume broadly
vary with position of louver.
1) When setting the fan speed to L,
L+, M, M+ or H on the remote
controller, the operation is
performed with the constant
speed shown in Fig. 1.
2) When setting the fan speed to
AUTO on the remote controller,
revolution of the fan motor is
controlled to the fan speed level
shown in Fig. 2 and Table 1
according to the setup tempera-
ture and room temperature.
(Fig. 1)
(Fig. 2)
(Table 1) Indoor fan air flow rate
+4.5 (+2.5)
Ta
F [C]
+3.5 (+2.0)
+2.7 (+1.5)
+2.0 (+1.0)
+1.0 (+0.5)
Tsc
a
b
c
d
e
M+(WB)
*3
*4
*5
L(W6)
Air volume AUTO
L
L+
M
M+
H
W6
(L + M) / 2
W9
(M + H) / 2
WC
Indication Fan speed
Fan speed setup
COOL ON
AUTO
MANUAL
*3 : Fan speed = [(M+) L] x 3/4 + L
*4 : Fan speed = [(M+) L] x 2/4 + L
*5 : Fan speed = [(M+) L] x 1/4 + L
(Linear approximation
from M+ and L)

FILE NO. SVM-10019
Fanspeed Airflowrate Fanspeed Airflowrate
(rpm) cfm(m3/h) (rpm) cfm(m3/h)
WF UH 1210 336(571) 1510 433(735)
WE H 1210 336(571) 1510 433(735)
WD UH M+ UH 1170 321(546) 1480 422(717)
WC H H 1120 303(515) 1430 404(686)
WB M+ M+ 1040 274(465) 1280 350(594)
WA M 1000 248(421) 1220 328(557)
W9 M L+ 960 235(400) 1150 302(514)
W8 L 870 200(340) 1000 248(421)
W7 L+ L- L+ 850 194(330) 980 241(409)
W6 L L 760 159(270) 920 219(372)
W5 L- UL L- 760 159(270) 900 212(360)
W4 UL UL 700 141(240) 840 190(323)
W3 SUL SUL 650 118(200) 770 165(280)
W2 SUL 500 65(110) 620 110(187)
W1 500 65(110) 520 74(126)
RAS-12LKV-UL
Fanspeed
level
DRY HEAT COOL
RAS-09LKV-UL
31
Item
2. Indoor fan
motor control
<In heating operation>
Description
1) When setting the fan speed to L,
L+, M, M+ or H on the remote
controller, the operation is per-
formed with the constant speed
shown in Fig. 3 and Table 1.
2) When setting the fan speed to
AUTO on the remote controller,
revolution of the fan motor is
controlled to the fan speed level
shown in Fig. 5 according to the set
temperature and room temperature.
3) Min air flow rate is controlled by
temperature of the indoor heat
exchanger (Tc) as shown in Fig. 4
for prevent high temperature of heat
exchanger.
4) Cold draft prevention, the fan speed
is controlled by temperature of the
[In starting and in stability]
(Fig. 3)
(Fig. 4)
(Fig. 5)
Cold draft preventive control
(Fig. 6)
L
L+
M
M+
H
W8
(L + M) / 2
WA
(M + H) / 2
WE
Indication Fan speed
Fan speed setup
HEAT ON
AUTO
YES
NO
MANUAL
TC 107.6F (42 C) Min air flow rate control
Tc F (C)
Limited to Min WD tap
* Fan speed =
(TC W8) + W8
No limit
*
Fan speed
AUTO
Basicfancontrol
* No limitation while fan speed MANUAL mode is in stability.
* A: When Tsc 75F (24C), A is 75F (24C), and
Tsc: Set value
b
c
d
e
f
g
L+(W9)
M+(WD)
*1
*2
*3
H (WE)
H (WE)
Linear-approximate
H and SUL with Tc.
SUL (W2)
Stop
115 (46) 115 (46)
Tc
93 (34)
*A+4 *A+4 *A+4
*A-4 *A-4 *A-4
Fan speed MANUAL in starting
Fan speed AUTO in stability
Fan speed AUTO in starting
*1: Fan speed =[(M+) (L+)] x 1 4 +L+
*2: Fan speed =[(M+) (L+)] x 2 4 +L+
*3: Fan speed =[(M+) (L+)] x 3 4 +L+
(Calculated with linear approximation from M+and L+)
TaF[C]
TSC
-1.0(-0.5)
-2.0(-1.0)
-2.7(-1.5)
-3.5(-2.0)
-4.5(-2.5)
-9.0(-5.0)
-10.0(-5.5)
F(C)
113 (45) 113 (45) 91 (33)
91 (33) 91 (33) 70 (21)
90 (32) 90 (32) 68 (20)
when Tsc <75F (24C), A is Tsc
FAN AUTO
FAN Manual
In starting
Until 12 minutes passed after operation start
When 12 to 25 minutes passed after operation
start and room temp. is 5.4F (3C) or lower than set temp.
Room temp. < Set temp. -7F ( 4C)
In stability
When 12 to 25 minutes passed after operation start
and room temp. is higher than [set temp. -5.4F (3C)]
When 25 minutes or more passed after operation start
Room temp. Set temp. -6.3F (3.5C)
5) In order to prevent Cold draft when
compressor stop during heating
operation. Then louver will move to
upper position and fan speed will
reduce or off.
FILE NO. SVM-10019
126 (52)
124 (51)
108 (42)
106 (41)
indoor heat exchanger (Tc) as shown
in Fig. 6 for keep warm temperature
of air flow.
32
Item
3. Outdoor fan
motor control
The blowing air volume at the outdoor unit side is controlled.
Receiving the operation command from the controller of
indoor unit, the controller of outdoor unit controls fan speed.
* For the fan motor, a DC motor with non-stage variable
speed system is used. However, it is limited to 8 stages for
reasons of controlling.
Description
1) The operation command sent
from the remote controller is
processed by the indoor unit
controller and transferred to the
controller of the outdoor unit.
2) When strong wind blows at
outdoor side, the operation of air
conditioner continues with the
fan motor stopped.
3) Whether the fan is locked or not
is detected, and the operation of
air conditioner stops and an
alarm is displayed if the fan is
locked.
4) According to each operation
mode, by the conditions of
outdoor temperature (To) and
compressor revolution, the speed
of the outdoor fan shown in the
table is selected.
Air conditioner ON
(Remote controller)
YES
YES
NO
NO
Indoor unit controller
Fan motor ON
3) Fan lock
4) Motor operates as shown in the table below.
1) Outdoor unit
operation command
(Outdoor fan control)
Air conditioner
OFF
Alarm
display
2) Fan speed 400.
(by strong wind)
when the motor OFF.
Fan motor OFF continues
(Use wind for heat
exchanging)
Outdoor fan speed (rpm)
Tap
f 1
f 2
f 3
f 4
f 5
f 6
f 7
f 8
200 200
300 300
370 370
440 440
440 440
500 500
550 550
600 600
Tap
f 9
f A
f B
f C
f D
f E
f F
600 650
600 700
650 700
700 800
700 800
700 800
700 900
Compressor speed (rps)

To
During
ECO mode
When To is abnormal
~13.8 ~31.7 32.3 ~MAX
MIN MAX MIN MAX MIN MAX
f 2 f 3 f A f C f D f F
f 2 f 3 f 7 f A f 9 f C
f 1 f 3 f 2 f 5 f 4 f 7
f 1 f 1 f 1 f 2 f 2 f 4

f 2 f 3 f B f C f C f D
In cooling operation
Compressor speed (rps)
To
During
ECO mode
When To is abnormal
~16.8 ~47.9 48.5 ~MAX
f 3 f 8 f 9
f 3 f 9 f A
f 8 f A f D
f B f C f D
f 3 f 3 f 6
f 3 f 3 f 8
f 5 f 9 f 9
f 7 f A f B
f A f B f D
In Heating operation
f 2 f 3 f C f D f E f F
f 0 f 0 f 0 f 1 f 1 f 2
f D f F f D f F f F
f 2 f 3 f 2 f 3 f B f C
f D
RAS-09LAV-UL RAS-12LAV-UL
f 0 0 0
RAS-09LAV-UL RAS-12LAV-UL
To 100F (38C)
To 82F (28C)
To 59F (15C)
To 42F (5.5C)
To 32F (0C)
To < 32F (0C)
To 100F (38C)
To 100F (38C)
To 50F (10C)
To 42F (15C)
To 22F (-5C)
To < 22F (-5C)
To 50F (10C)
To 42F (15C)
To 22F (-5C)
To < 22F (-5C)
FILE NO. SVM-10019
33
Item
4. Capacity
control
The cooling or heating capacity depending on the load is
adjusted.
According to difference between the setup value of tempera-
ture and the room temperature, the capacity is adjusted by
the compressor revolution.
Description
1) The difference between set
temperature on remote controller
(Ts) and room temperature (Ta)
is calculated.
2) According to the temperature
difference, the correction value of
Hz signal which determines the
compressor speed is set up.
3) The rotating position and speed
of the motor are detected by the
electromotive force occurred on
the motor winding with operation
of the compressor.
4) According to the difference
resulted from comparison of the
correction value of Hz signal with
the present operation Hz, the
inverter output and the commuta-
tion timing are varied.
5) Change the compressor motor
speed by outputting power to the
compressor.
* The contents of control
operation are same in cooling
operation and heating
operation
This function prevents troubles on the electronic parts of the
compressor driving inverter.
This function also controls drive circuit of the compressor
speed so that electric power of the compressor drive circuit
does not exceed the specified value.
5. Current release
control
Outdoor temp. To
Setup of current release point
Outdoor unit inverter main
circuit control current
High
Low
Reduce compressor speed
Operating current
Setup value
1) The input current of the outdoor
unit is detected in the inverter
section of the outdoor unit.
2) According to the detected
outdoor temperature, the
specified value of the current is
selected.
3) Whether the current value
exceeds the specified value or
not is judged.
4) If the current value exceeds the
specified value, this function
reduces the compressor speed
and controls speed up to the
closest one commanded from the
indoor unit within the range
which does not exceed the
specified value.

Outdoor temp.
Cooling current release value Heating current release value
RAS-09LAV-UL RAS-12LAV-UL RAS-09LAV-UL RAS-12LAV-UL
113F (45C)
104F (40C)
61F (16C)
52F (11C)
111F (44C)
102F (39C)
60F (15.5C)
51F (10.5C)
3.97A
4.35A
6.30A
4.27A
4.88A
8.47A
6.30A 7.72A
6.30A 8.10A
6.30A 8.47A
FILE NO. SVM-10019
Set temp. (Ts) Room temp. (Ta)
Correction value of Hz signal

Detection of electromotive force
of compressor motor winding
Inverter output change
Commutation timing change
Change of compressor speed
Remote contr oller Indoor unit
Ts Ta
Correction value of Hz signal- Operating Hz
Detection of motor speed (Operation Hz)
and rotor position
Capacity control continues
Current decrease
34
Item
6. Release protective
control by tempera-
ture of indoor heat
exchanger
<In cooling/dry operation>
(Prevent-freezing control for indoor heat exchanger)
In cooling/dry operation, the sensor of indoor heat
exchanger detects evaporation temperature and
controls the compressor speed so that temperature of
the heat exchanger does not exceed the specified
value.
Description
1) When temperature of the indoor
heat exchanger drops below 41F
(5C), the compressor speed is
reduced. (P zone)
heat exchanger rises in the
range from 43F (6C) to under
45F (7C), the compressor
speed is kept. (Q zone)
heat exchanger rises to 45F (7C)
or higher, the capacity control
operation returns to the usual
control in cooling operation.
(R zone)
heat exchanger rises in the
range from 126F (52C) to 131F
(55C), compressor speed is kept.
(Q zone)
When temperature of the indoor
heat exchanger drops in the
range from 118F (48C) to under
131F (55C) the compressor
speed is kept. (Q zone)
heat exchanger rises to 131F
(55C) or higher, the compressor
speed is reduced. (P zone)
heat exchanger does not rise to
126F (52C), or when it drops
below to 118F (48C), the capacity
control operation returns to the
usual control in heating operation.
(R zone)
<In heating operation>
(Prevent-overpressure control for refrigerating cycle)
In heating operation, the sensor of indoor heat ex-
changer detects condensation temperature and controls
the compressor speed so that temperature of the heat
exchanger does not exceed the specified value.
(7 C)
(6 C)
(5 C)
R
Q
P
(55 C)
(52 C)
(48 C)
P
Q
R
Usual cooling capacity control
Reduction of compressor speed
I
n
d
o
o
r

h
e
a
t

e
x
c
h
a
n
g
e
r

t
e
m
p
e
r
a
t
u
r
e
When the value is
in Q zone, the
compressor speed
is kept.
Reduction of compressor speed
Usual heating capacity control
I
n
d
o
o
r

h
e
a
t

e
x
c
h
a
n
g
e
r

t
e
m
p
e
r
a
t
u
r
e
When the value is
in Q zone, the
compressor speed
is kept.
45 F
43 F
41 F
131 F
126 F
118 F
FILE NO. SVM-10019
35
Item Operation flow and applicable data, etc. Description
7. Defrost control
(Only in heating
operation)
(This function removes frost adhered to the outdoor
heat exchanger.)
The temperature sensor of the outdoor heat ex-
changer (Te sensor) judges the frosting status of the
outdoor heat exchanger and the defrost operation is
performed with 4-way valve reverse defrost system.
The necessity of defrost operation is
detected by the outdoor heat exchanger
temperature. The conditions to detect the
necessity of defrost operation differ in A,
B, or C zone each. (Table 1)
<Defrost operation>
Defrost operation in A to C zones
1) Stop operation of the compressor for
20 seconds.
2) Invert (ON) 4-way valve 10 seconds
after stop of the compressor.
3) The outdoor fan stops at the same time
when the compressor stops.
4) When temperature of the indoor heat
exchanger becomes 100F (38C) or
lower, stop the indoor fan.
<Finish of defrost operation>
Returning conditions from defrost
operation to heating operation
1) Temperature of outdoor heat exchanger
rises to 46F (8C) or higher.
2) Temperature of outdoor heat exchanger is
kept at 41F (5C) or higher for 80 seconds.
3) Defrost operation continues for
15 minutes.
<Returning from defrost operation>
1) Stop operation of the compressor for
approx. 50 seconds.
2) Invert (OFF) 4-way valve approx. 40
seconds after stop of the compressor.
3) The outdoor fan starts rotating at the
same time when the compressor starts.
Table 1
* The minimum value of Te sensor 10 to 15 minutes
after start of operation is stored in memory as Te0.
(5 C)
0 10 15 2740 34
(7 C)
(20 C)
Operation time
(Minute)
Start of heating operation
*
O
u
t
d
o
o
r

h
e
a
t

e
x
c
h
a
n
g
e
r

t
e
m
p
e
r
a
t
u
r
e
C zone
A zone
B zone
A zone
B zone
C zone
When Te0 - TE 4.5F (2.5C) continued for 2 minutes in
A zone, defrost operation starts.
When the operation continued for 2 minutes in B zone,
defrost operation starts.
When Te0 - TE 5.4F (3C) continued for 2 minutes in
C zone, defrost operation starts.
23 F
19 F
4 F
FILE NO. SVM-10019
Horizontal
blowing
Inclined
blowing
Blowing
downward
Air direction
Inclined
blowing
Horizontal
blowing
Initial setting of "Cooling storage position"
Louver : Directs downward (35.3)
Heating operation/
AUTO (HEAT)
Initial setting of Heating storage position
Louver : Directs downward (80.5 )
Item
8. Louver control
1) Louver
position
This function controls the air direction of the indoor unit.
Description
Swing operation is perfor in range 35 with the Fixed position as
the center.
If the swing range exceeded either upper or lower limit position,
swing operation is perfomed in range 35 from the limit.
3) Swing
2) Louver position in heating operation
2) Air direction adjustment
The position is automatically controlled according to the operation
The set louver position is stored in memory by the microcomputer,
The angle of the louver is indicated as the louver closes fully is 0.
1) Louver position in cooling operation
mode (COOL/HEAT).
and the louver returns to the stored position when the next operation
is performed. (Cooling/Heating memory position)
Swing
When pressing
[SWING] button during
operation, the louver
starts swinging.
The louver position can
be arbitrarily set up by
pressing [FIX] button.
36
FILE NO. SVM-10019
Fixed
Position
before start
swing
Upper Limit
Position.
Lower Limit
Position
30
o
5
o
Swing
range 35
o
Upper Limit
Position.
Lower Limit
Position.
Fixed Position
before start
swing.
17.5
o
17.5
o
Swing
range 35
o
37
Item
9. ECO
operation
When pressing [ECO] button on the remote controller, a
Economic operation is performed.
<Cooling operation>
This function operates the air conditioner with the difference
between the set and the room temperature as shown in the
following figure.
Description
<Heating operation>
1) The difference of room temperature
and set temperature are separated
in to A zone, B zone and C zone.
Three zone will changed again 30
minutes after ECO operation start.
* 12 (DRY max - COOL min) /6 x 5 + COOL min
(
R
o
o
m

t
e
m
p
.

S
e
t

t
e
m
p
.
)

(3.5)
(3.0)
(2.5)
(1.5)
(1.0)
TSC
(-1.0)
(-2.0)
(5.5)
1H 2H
11
10
7
6
5

4
3
2
1

OFF
Dry Max
*12
*11
*9
*8
*10
0.0
(6.0)
(6.5)
3H 4H
(5.0)
(4.5)
(4.0)
(2.0)
(0.5)
(-0.5)
12
9
8
Time
Zone Frequency
FAN
Min
Hz
T
h
e

i
n
d
o
o
r

f
a
n

s
p
e
e
d

i
s

n
o
t

c
o
n
t
r
o
l
l
e
d

a
n
d

c
a
n

b
e

s
e
l
e
c
t
e
d

Hz 09LKV-UL 12LKV-UL
Cool min
DRY max
20
35
11
31
1) The control target temperature
increase 1.0F (0.5C) per hour
up to 3.5F (2C) starting from the
set temperature when ECONO
2) The indoor fan speed is depend
on presetting and can change
every speed after setting ECO
operation.
<Cooling operation>

2) The compressor speed is
controlled as shown on the table.
3) The compressor speed is
controlled as shown in the left
figure.
6.3
5.5
4.5
2.7
2.0
-2.0
-3.5
10.0
11.0
11.7
9.0
8.0
7.0
3.5
1.0
-1.0
(C) F
FILE NO. SVM-10019
has been received.
d
u
r
i
n
g

t
h
e

E
C
O

o
p
e
r
a
t
i
o
n
.
3) The indoor fan speed is not
controlled and can be selected
during the ECO operation.
< Heating Operation >
ECO Start 30 minutes Time
Compressor speed (Hz)
R
o
o
m

t
e
m
p
.

-

S
e
t

t
e
m
p
.
Zone
09LKV-UL 12LKV-UL
Model
0.0 (0.0)
Compressor stop
-2.0
-3.5
-5.5
-7.0
o
F (
o
C)
(1.0)
(2.0)
(3.0)
(4.0)
B
A
(7.0)
(8.0)
(11.0) -20.0
-22.0
(5.0)
(6.0)
(12.0)
Linear aproximation
between A to C
50 43
-16.0
-18.0
20 13
(9.0)
(10.0)
C
-12.5
-14.0
-9.0
-11.0
A Zone
B Zone
C Zone
A Zone
B Zone
C Zone
38
Item
10. Temporary
operation
Pressing [RESET] button starts the temporary opera-
tion of [AUTO] operation. When keeping [RESET]
button pressed for 10 seconds or more, the temporary
[COOL] operation is performed.
Description
1) When pressing [RESET] button, the
temporary [AUTO] operation starts.
2) When keeping [RESET] button pressed
for 3 seconds or more, Pi, Pi, Pi sound is
heard and [AUTO RESTART] control is
changed.
3) When keeping [RESET] button pressed
for 10 seconds or more, Pi sound is
heard and the temporary [COOL]
operation starts.
4) If the filter lamp goes on, press [RESET]
button to go off the filter lamp, and then
press [RESET] button again.
5) To stop the temporary operation, press
the button again.
Filter lamp ON
Press RESET button.
Did you press [RESET] button
for 3 seconds or more?
Did you press [RESET] button
for 10 seconds or more?
Set or Reset [AUTO RESTART]
YES
YES
NO
NO
NO
YES
Temporary [AUTO] operation
Temporary [COOL] Operation
11. Discharge temperature control 1. Purpose
This function detects error on the
refrigerating cycle or error on the com-
pressor, and performs protective control.
2. Operation
Control of the compressor speed
The speed control is performed as
described in the left table based upon
the discharge temperature.
Td value
243F (117C)
233F (112C)
226F (108C)
221F (105C)
208F (98C)
Control operation
Judges as an error and stops the compressor.
Reduce the compressor speed.
Reduce slowly compressor speed.
Keeps the compressor speed.
If the operation is performed with lower speed than one
commanded by the serial signal, speed is slowly raised
up to the commanded speed.
Operates with speed commanded by the serial signal.
FILE NO. SVM-10019
39
Item
12. Pulse
Modulating
valve (P.M.V.)
This function controls throttle amount of the
refrigerant in the refrigerating cycle.
According to operating status of the air conditioner,
this function also controls the open degree of valve
with an expansion valve with pulse Modulation.
Description
1) When starting the operation, move the
valve once until it fits to the stopper.
(Initialize)
* In this time, Click sound may be
heard.
2) Adjust the open degree of valve by super
heat amount. (SH control)
3) If the discharge temperature was exces-
sively up, adjust the open degree of valve
so that it is in the range of set tempera-
ture. (Discharge temp. control)
* SH (Super Heat amount) =
Ts (Temperature of suction pipe of the compressor)
Tc or Te (Heat exchanger temperature at evaporation side)
* PMV: Pulse Modulating Valve
Starting up
Initialize
Move to
initial position
PMV open degree control
SH control
Td
release control
Turn OFF by
remote controller
Move to "Stop
Compressor Stop by
"Room Temperature
Compressor ON
Defrosting
operation
Control"
Position" (Setup
from factory)
Move to "Defrost
Position" (Setup
from factory)
control
FILE NO. SVM-10019
4) When defrost operation is performed, the
open degree of valve is adjusted accord-
ing to each setup conditions during
preparation for defrost and during defrost
operation (4-way valve is inversed.).
5) When operation is OFF by the remote
controller or when compressor is OFF by
room temperature control, the open
degree of valve is adjusted to the stop
position.
40
Item
13. Self-Cleaning
1. Purpose
The Self-Cleaning operation is to minimize the
growth of mold, bacteria etc. by running
the fan and drying so as to keep the
inside of the air conditioner clean.
Self-Cleaning operation
When the cooling or dry operation shuts
down, the unit automatically starts the Self-
Cleaning operation which is then performed
for the specified period based on duration
of the operation which was performed
prior to the shutdown, after which the
Self-Cleaning operation stops.
(The Self-Cleaning operation is not
performed after a heating operation.)
2. Operation
1) When the stop signal from the remote
controller or timer-off function is received,
only the timer indicator light.
2) The period of the Self-Cleaning operation
is determined by the duration of the
operation performed prior to the
reception of the stop code.
3) After the Self-Cleaning operation has
been performed for the specified period,
the unit stops operating.
Unit now performing cooling or dry operation
Press STOP button
Only timer indicator lights, and Self Cleaning operation starts
Time set now elapses
Operation stops
function
During Self-Cleaning operations: The louver opens
slightly. The indoor fan operates continuously at
a speed of 500 rpm.
Cooling: Auto (cooling) Dry
Heating: Auto (heating)
Auto (fan only)
Shutdown
Operation time
Up to 10 minutes
No Self-Cleaning operation
performed (0 minutes)
10 minutes
30 mins.
or longer
No Self-Cleaning operation performed
To stop an ongoing Self-Cleaning operation at any time
Press the start/stop button on the remote controller twice during the Self-Cleaning
operation. (After pressing the button for the first time, press it for the
Self-Cleaning operation times
second time without delay (within 10 minutes).)
Description
Self-Cleaning operation time
FILE NO. SVM-10019
Item
13. Self-Cleaning
function
Self-Cleaning diagram
Description
Operation display ON OFF OFF
FCU fan
ON ON
OFF
rpm is depend on presetting. (500RPM)
FCU louver OPEN OPEN (12.7) CLOSE
Timer display
ON or OFF
ON
ON or OFF
depend on presetting of timer function. depend on presetting of timer function.
Compressor
ON or OFF
OFF OFF
depend on presetting per room temperature.
CDU fan ON or OFF
OFF OFF
depend on presetting per room temperature.
Cool mode or dry mode
operation more than 10 mins.
Self-Cleaning mode
operate 30 mins.
Automatically turn-off.
Operation time
Turn off by remote controller or
timer-off function.
41
FILE NO. SVM-10019
How to Set or Cancel Self-Cleaning operation.
(Default setting from factory is ON)
1. Connect jumper lead at J201 of the indoor P.C. board
assembly.
2. To cancel Self-Cleaning operation.
3. To set Self-Cleaning operation.
Turn the power supply ON
Press the [RESET] button located on the front
panel of the indoor unit for more than 3 seconds.
After 3 seconds, the unit beeps three times.
The Self-Cleaning is cancelled.
Turn the power supply ON
Press the [RESET] button located on the front
panel of the indoor unit for more than 3 seconds.
After 3 seconds, the unit beeps three times
and the indicator blinks for 5 seconds.
The Self-Cleaning is set.
One J201 is added, it will effect
as following.
The operation when press
the RESET button for
3 seconds will be changed
from Set/Cancel the
AUTO-RESTART to
Set/Cancel the
Self-Cleaning.
AUTO-RESTART function
will not activate. In case of
AUTO-RESTART is need,
disconnect the jumper
J201 and set it again after
Set/Cancel the
Self-Cleaning finished.
Note :
J201 is near the MCU, so
so take steps to ensure
that it will not be exposed
to excessive of heat.
Also take care to avoid
solder bridging with the
surrounding components.
42
FILE NO. SVM-10019
14. Remote-A or B
selection
1. Purpose
This operation is to operate only one
indoor unit using one remote controller.
2. Description
When operating one indoor unit in a
situation where two indoor units have
been installed in the same room or
nearby rooms, this operation prevents the
remote controller signal from being
received simultaneously by both units,
thus preventing both units from operating.
3. Operation
The indoor unit on which the remote
controller selection has been set to B
receives the signal of the remote control-
ler also set to B.
(At the factory the remote controller
selection is set to A on all the indoor
units. There is no A setting display.)
Setting the remote controller
To separate using of remote control for each indoor
unit in case of 2 air conditioner are installed nearly.
Remote Control B Setup.
1) Press RESET button on the indoor unit to turn
2) Point the remote control at the indoor unit.
3) Push and hold CHK button on the Remote
Control by the tip of the pencil. "00" will be shown
the air conditioner ON.
shown on the display.
4) Press MODE during pushing CHK . "B" will
show on the display and "00" will disappear and
the air conditioner will turn OFF. The Remote
Control B is memorized.
Note : 1. Repeat above step to reset Remote Control
to be A.
2. Remote Control A has not "A" display.
3. Default setting of Remote Control from
factory is A.
PRESET FAN
BDisplay
00Display
PCB NO : MCC-5045 PCB NO : WP-020
PCB NO : MCC-5046
J201
.
43
FILE NO. SVM-10019
.
17. One-Touch
One touch comfort is the fully automated operation
that is set according to the preferable condition in
a region.
0 12 25
AUTO
*AUTO/L L
Fan
Operation
Time after operation
starts (min)
Comfort
*AUTO/L: Fan operates depends on the setting
temperature and room temperature.
During the One Touch Comfort mode if the indoor
unit receives any signal with other operation mode,
the unit will cancel the comfort mode and operates
according to the signal received.
Operation condition for model to Europe
market
When an indoor unit receives "One Touch
Comfort Signal" from the remote controller,
the indoor unit operates as following.
1) Air conditioner starts to operation when
the signal is received, even if the air
conditioner was OFF.
2) Operation mode is set according to room
temperature, the same as AUTO mode.
3) Target temperature is 75F (24C).
4) Louver position is set as stored position
of the operating mode.
5) Fan is controlled as followings.
16. COMFORT The principles of comfort sleep mode are:
Quietness for more comfortable. When
Save energy by changing room temperature
The air condition can shut down by itself
Remarks:
Comfort sleep mode will not operate in dry
automatically.
mode and fan only mode.
automatically.
room temperature reach setting temperature
The preset temperature will increase as
show on ECO operation (Item No. 9)
Press the [COMFORT SLEEP] button to
choose the operating hours. Repeat
pressing to select the hours.
If the [COMFORT SLEEP] button is pressed
again means cancel comfort sleep mode.
Heating mode
The preset temperature will drop down as
show on ECO operation (Item No. 9)
choose the operating hours. Repeat
Press the [COMFORT SLEEP] button to
pressing to setect thehours.
If the [COMFORT SLEEP] button is pressed
again means cancel comfort sleep mode.
(1hr, 3hr, 5hr or 9hr)
(1hr, 3hr, 5hr or 9 hr)
SLEEP
Cooling mode
When the [QUIET] button is pressed, the fan of the
indoor unit will be restricted the revolving speed at
until the [QUIET] button is pressed once

Remarks :
1. Quiet mode is unable to work in dry mode.
2. Quiet mode is appropriate to work with less
cooling load and less heating load condition.
Quiet mode is the system which, control the
revolving speed of indoor fan to work
constantly at lower than speed L. In addition,
noise level of indoor unit is less than usual.
speed L
again (cancel Quiet mode).
Because of the fan speed L- may cause not
enough the cooling capacity or heating
capacity.
15. QUIET mode
.
44
FILE NO. SVM-10019
19. FILTER When the elapsed time reaches 1000 hours after
Indicator conditioner operation, the FILTER indicator lights.
After cleaning the filters, turn off the FILTER indicator.
How to Turn Off FILTER Indicator
Press [RESET] button on the indoor unit.
NOTE :
If [RESET] button is pushed while the FILTER indicator
is not lit, the indoor unit will start the automatic
operation.
.
18. Hi-POWER ([Hi-POWER] button on the remote controller
is pressed)
When [Hi-POWER] button is pressed while the indoor
unit is in Auto, Cooling or Heating operation, Hi-
Mode
POWER mark is indicated on the display of the remote
controller and the unit operates as follows.
1. Automatic operation
The indoor unit operates in according to the
current operation.
2. Cooling operation
remote controller does not change.)
The indoor unit's fan speed level increase 1 tap
The preset temperature drops 2.0F (1C)
(The value of the preset temperature on the
3. Heating operation
remote controller does not change.)
The indoor unit's fan speed level increase 1 tap
The preset temperature increases 3.5F (2C)
(The value of the preset temperature on the
4. The Hi-POWER mode can not be set in Dry
operation
The Hi-POWER operation will be cancelled
when press [Hi-POWER] button again.
45
9-3. Auto Restart Function (Default setting from factory is ON).
This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with
the set operating conditions in the event of a power supply being accidentally shut down.
The operation will resume without warning three minutes after power is restored.
This function is set to work from the factory.
Operation
Press [RESET] button for more than
three seconds. (Less than 10 seconds)
Motions
The unit is on standby.
The unit starts to operate. The green indicator is on.

After approx. three seconds,
The unit beeps three times and continues to operate.
If the unit is not required to operate at this time, press [RESET]
button once more or use the remote controller to turn it off.
Operation
Motions
The unit is in operation. The green indicator is on.
The unit stops operating. The green indicator is turned off.

The unit beeps three times.
If the unit is required to operate at this time, press [RESET] button
once more or use the remote controller to turn it on.
1. The power supply to the unit must be ON ; The function will not set or reset if the power supply is OFF.
2. Press the [RESET] button located on the front panel of the indoor unit for more than 3 seconds.
3. After 3 seconds, the unit beeps three times.
When the system is on stand-by (not operating)
When the system is operating
RESET
Hi POWER FILTER PAP TIMER OPERATION
RESET
FILE NO. SVM-10019
The Auto Restart Function will not restart operation of the air conditioner in following case.
The Auto Restart Function is setup to OFF.
The power supply is shut down during the air conditioner is OFF.
The power supply is shut down when timer operatio is set.
9-3-1. How to Cancel the Auto Restart Function
To cancel Auto Restart Function, proceed as follows.
46
9-3-3. Power Failure During Timer Operation
If Timer operation is set and the power supply shut down accidentally, the previous Timer setting
will be cancelled.
Daily-Timer operation will be not affected by power supply failure, if the remote controller is
Operation
Motions
The unit is on standby.
The unit starts to operate. The green indicator is on.

The unit beeps three times The green indicator flashes
and continues to operate. for 5 seconds.
If the unit is not required to operate at this time, press [RESET]
button once more or use the remote controller to turn it off.
Operation
Motions
The unit is in operation. The green indicator is on.
The unit stops operating. The green indicator is turned off.

The unit beeps three times. The green indicator flashes
for 5 seconds.
If the unit is required to operate at this time, press [RESET] button
once more or use the remote controller to turn it on.
9-3-2. How to Set the Auto Restart Function
To set Auto Restart Function, proceed as follows:
1. The power supply to the unit must be ON ; The function will not set or reset if the power supply is OFF.
2. Press the [RESET] button located on the front panel of the indoor unit for more than 3 seconds.
3. After 3 seconds, the unit beeps three times and the indicator blinks for 5 seconds.
When the unit is standby (Not operating)
When the unit is in operation
While the filter check indicator is on, the RESET button has the function of filter reset betton.
RESET
RESET
FILE NO. SVM-10019
located on the position which it can send the command signal to the indoor unit. It is because the remote
controller will send signal every 30 minutes and Daily-Timer operation will be restore.
1 11 1 Infrared signal emitter
Start/Stop button
Mode select button (MODE)
Temperature button (TEMP)
Fan speed button (FAN
Swing louver button (SWING)
Set louver button (FIX)
On timer button (ON)
Off timer button (OFF)
Sleep timer button (SLEEP)
Setup button (SET)
Clear button (CLR)
Memory and Preset button (PRESET)
One Touch button (ONE-TOUCH)
High power button (Hi-POWER)
Economy button (ECO)
Quiet button (QUIET)
Comfort sleep button (COMFORT SLEEP)
Filter reset button (FILTER)
Clock Reset button (CLOCK)
Check button (CHK)
1
2
9
9-4. Remote controller and Its functions
9-4-1. Parts name of remote controller
18
47
3
4
5
6
7
8
10
19 11
20 12
13
14
15
16
17
18
19
21
20
9-4-2. Operation of remote control
1. ONE-TOUCH
Press the "ONE-TOUCH" button for fully automated operation that is customised to the typical consumer
preferences in your region of the world. The coutomised settings control temperature air flow strength, air flow
direction and other settings to provide you alternate contact with "ONE-TOUCH" OF THE BUTTON. If you
prefer other settings you can select from the many other operation functions of your Toshiba carrier unit

Press ONE-TOUCH : Start the operaton.
2. AUTOMATIC OPERATION
To automatically select cooling, heating, or fan only operation.
1. Press MODE : Select A.
2. Press TEMP : Set the desired temperature.
3. COOLING / HEATING / FAN ONLY OPERATION
1. Press MODE : Select Cool , Heat , or Fan only .
Cooling: Min. 62F (17C), Heating : Max, 86F (30C), Fan Only: No temperature indication
3. Press FAN : Select AUTO, LOW , LOW+ , MED , MED+ , or
HIGH .
FILE NO. SVM-10019
PRESET
ONE-TOUCH
QUIET
SWING
TIMER
ON
FILTER CHK C/F CLOCK
OFF
CLR
SLEEP SET
FIX Hi-POWER ECO
COMFORT
SLEEP
MODE
TEMP
FAN
48
4. DRY OPERATION (COOLING ONLY)
For dehumidification, a moderate cooling performance is controlled automatically.
1. Press MODE : Select Dry .
5. Hi-POWER OPERATION
To automatically control room temperature and airflow for faster cooling or heating
Press HI-POWER : Start and stop the operation.
operation (except in DRY and FAN ONLY mode)
6. ECO OPERATION
To automatically control room to save energy (except in DRY and FAN ONLY mode)
Press ECO : Start and stop the operation.
Note: Cooling operation; the set temperature will increase automatically 1.8F (1C)/
hour for 2 hours (maximum 3.6F (2C) increase). For heating operation the
set temperature will decrease.
7. TEMPORARY OPERATION
In case of the misplaced or discharged remote control
Pressing the RESET button, the unit can start or stop
without using the remote control.
Operation mode is set on AUTOMATIC
operation, preset temperature is 75F (24C)
and fan operation is automatic speed.
8. TIMER OPERATION
Setting the ON Timer Setting the OFF Timer
Press
ON
: Set the desired ON timer. Press
OFF
: Set the desired OFF timer.
Press
SET
: Set the timer . Press
SET
: Set the timer.
Press
CLR
: Cancel the on timer .
Press : Cancel the OFF timer.
CLR
Press

ON

: Set the ON timer. Press
SET
.
Press

OFF

: Set the OFF timer.
Press
SET
button during the ( or )
mark flashing.
1
1
2
3
2
3
3
4
Everyday timer allows the user to set both the ON & OFF timers and will be activated on a daily basis.
Setting Everyday Timer
During the every day timer is activation, both arrows are indicated. ( or )
Note:
Keep the remote control in accessible transmission to the indoor unit;
otherwise, the time lag of up to 15 minutes will occur.
The setting will be saved for the next same operation.
FILE NO. SVM-10019
49
9. PRESET OPERATION
Set your preferred operation for future use. The setting will be memorized by the
unit for future operation (except air flow direction).
1. Select your preferred operation.
2. Press and hold PRESET for 3 seconds to memorize the setting. The mark P
displays.
3. Press PRESET : Operate the preset operation.
10. AUTO RESTART OPERATION
To automatically restart the Air conditioner after the power failure (Power of the unit
must be on.)
1. AUTO RESTART is an initial setting from factory.
Do not operate ON timer and OFF timer.
2. Press and hold the RESET button on the indoor unit for 3 seconds to cancel the
Setting
operation. (3 beep sound but OPERATION lamp does not blink)
11. QUIET OPERATION
To operate at super low fan speed for quiet operation (except in DRY mode)
Press QUIET : Start and stop the operation.
Note: Under certain conditions, QUIET operation may not provide adequate
cooling or heating due to low sound features.
12. COMFORT SLEEP OPERATION
To save energy while sleeping, automatically control air flow and automatically turn OFF.
Press COMFORT SLEEP : Select 1, 3, 5 or 9 hrs for OFF timer operation.
Note: The cooling operation, the set temperature will increase automatically
1.8F (1C)/hour for 2 hours (maximum 3.6F (2C) increase). For heating operation,
the set temperature will decrease.
13. SLEEP TIMER OPERATION
To start the sleep timer (OFF timer) operation
Press SLEEP : Select 1, 3, 5 or 9 hrs for OFF timer operation.
FILE NO. SVM-10019
50
9-4-3. Name and Functions of Indications on Remote Controller
[Display]
All indications, except for the clock time indicator, are displayed by pressing the button.
1 Transmission mark
This transmission mark indicates when the
remote controller transmits signals to the indoor
unit.
2 Mode indicator
Indicates the current operation mode.
(A : Automatic control : Cool,
: Dry, : Heat, : Fan only)
3 Temperature indicator
Indicates the temperature setting.
[62F to 86F (17C to 30C)]
5 TIMER and clock time indicator
The time setting for timer operation or the clock
time is indicated.
The current time is always indicated except
during TIMER operation.
6 Hi-POWER indicator
Indicates when the Hi-POWER operation starts.
Press the Hi-POWER button to start and press it
again to stop the operation.
7 (PRESET) indicator
Flashes for 3 seconds when the PRESET button is
pressed during operation.
The mark is shown when holding down the
button for more than 3 seconds while the mark is
flashing.
Press another button to turn off the mark.
8 ECO indicator
Indicates when the ECO is in activated.
Press the ECO button to start and press it again
to stop operation.
9 A, B change indicator remote controller
When the remote controller switching function is
set, B appears in the remote controller display.
(When the remote controller setting is A, there is
no indication at this position.)
10 Comfort sleep
Indicates when comfort sleep is activaled.
Press comfort sleep button to select function.
11 Quiet
Indicates when quiet is activated.
Press quiet button to start and press it again to stop
operation.
12 One-Touch
Indicates when one touch comfort is activated.
Press one-touch button to start the operation.
13 Swing
Indicates when louver is swing.
Press swing button to start the swing operation
and press it again to stop the swing operation.
FILE NO. SVM-10019
1
7
9
12
8
6
3
11
10
2
13
4
5
4 FAN speed indicator
Indicates the selected fan speed.
AUTO or five fan speed levels
(LOW , LOW
+
, MED , MED
+
,
HIGH ) can be shown.
Indicates AUTO when the operating mode is
either AUTO or : Dry.
POWER-SET
51
10. INSTALLATION PROCEDURE
10-1. Installation Diagram of Indoor and Outdoor Units
Before installing the wireless remote controller
Loading Batteries
1. Remove the battery cover.
2. Insert 2 new batteries (AAA type)
following the (+) and () positions. 3 Batteries
2 Wireless remote controller
ACL
FILE NO. SVM-10019

Insulate the refrigerant pipes separately
with insulation, not together.
2
3
8
4
Insert the cushion between the indoor
unit and wall, and tilt the indoor unit for
better operation.
For the rear left and left piping
Wall
Make sure to run the drain hose sloped
downward.
Do not allow the drain hose to get slack.
Cut the piping
hole sloped
slightly.
The auxiliary piping can be connected to
the left, rear left, rear right, right, bottom
right or bottom left.
Right
Rear
right
Bottom
right
Rear
left
Bottom left
Left
5/16 in. (8 mm) thick heat
resisting polyethylene foam
1
Batteries
Pan head
wood screw
Remote control holder
Vinyl tape
Apply after carrying
out a drainage test.
Wireless remote control
Saddle
Extension drain hose
(Not available,
provided by installer)
Shield pipe
(
A
t
t
a
c
h

t
o

t
h
e

f
r
o
n
t

p
a
n
e
l.
)
A
ir
filte
r
Installation
plate
2
-
9
/
1
6

i
n
.

(
6
5

m
m
)

o
r

m
o
r
e
7
in
. (1
7
0
m
m
)
o
r m
o
re
3
-
1
5
/1
6
in
. (
1
0
0
m
m
)

o
r
m
o
r
e
3
-1
5
/1
6
in
. (1
0
0
m
m
)
o
r m
o
re
2
3
-5
/8
in
. (6
0
0
m
m
)
o
r m
o
re
2
3
-
5
/8
in
. (
6
0
0
m
m
)

o
r
m
o
r
e

6
5
Filter
Filter
Hook
24 in. (600 mm) or more
only when unobstructed to
the front and both sides.
7
in
. (1
7
0
m
m
)
o
r m
o
re
Conduit
Front
panel
Air inlet grille
H
o
o
k
52
FILE NO. SVM-10019
Fig. 10-2-1
Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong wind.
Use 5/16 in. ( 8 mm) or 3/8 in. ( 10 mm) anchor bolts and nuts.
A
Parts name
Refrigerant piping
Liquid side : 1/4 in. (6.35 mm)
Gas side : 3/8 in. ( 9.52 mm)
Pipe insulating material
(polyethylene foam, 6 mm thick)
Putty, PVC tapes
Part
Code
Q'ty
One
each
1
One
each
10-1-2. Optional installation parts

10-2. Installation
<Fixing bolt arrangement of outdoor unit>
B
C

4-1/4 in.
(108 mm)
1-1/8 in.
(28 mm)
4-15/16 in.
(125 mm)
1

in
.
(
2
5

m
m
) Air inlet
Air outlet
3
-
3
/
8

i
n
.
(
8
6

m
m
)
4

i
n
.
(
1
0
2

m
m
)
1
2
-
1
9
/
3
2

i
n
.
(
3
2
0

m
m
)
23-5/8 in.
(600 mm)
3-17/32 in.
(90 mm)
53
Part
No.
1
2
3
Part name (Qty)
Installation plate x 1
Wireless remote control x 1
Battery x 2
Part name (Qty)
Remote control holder x 1
Filter x 1
Part
No.
4
5
6
Part
No.
7
8
Others
Name
Owners manual
Installation manual
Part name (Qty)
5/32 x 1s ( 4mm x 25 ) x 6
Pan head wood screw
1/8 x 5/8 s (3.1mm x 16 ) x 2
10-2-2. Accessory and installation parts
Filter x 1
FILE NO. SVM-10019
Mounting screw
s
s
54
10-2-3. Installation/Servicing Tools
Changes in the product and components
In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged
accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed.
(1/2 UNF 20 threads per inch)
In order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and size
of opposite side of flare nuts has been changed. (for copper pipes with nominal dimensions 1/2 and 5/8)
New tools for R410A
New tools for R410A
Gauge manifold
Charge hose
Electronic balance
for refrigerant charging
Torque wrench
(nominal diam. 1/2, 5/8)
Flare tool (clutch type)
Gauge for projection
adjustment
Vacuum pump adapter
Gas leakage detector
Applicable to R22 model
Changes
As pressure is high, it is impossible to measure by means of
conventional gauge. In order to prevent any other refrigerant from
being charged, each port diameter has been changed.
In order to increase pressure resisting strength, hose materials
and port size have been changed (to 1/2 UNF 20 threads per inch).
When purchasing a charge hose, be sure to confirm the port size.
As pressure is high and gasification speed is fast, it is difficult to
read the indicated value by means of charging cylinder, as air
bubbles occur.
The size of opposite sides of flare nuts have been increased.
Incidentally,
a common wrench is used for nominal diameters 1/4 and 3/8.
By increasing the clamp bars receiving hole, strength of spring in
the tool has been improved.
Used when flare is made by using conventional flare tool.
Connected to conventional vacuum pump. It is necessary to use
an adapter to prevent vacuum pump oil from flowing back to the
charge hose. The charge hose connecting part has two ports-one
for conventional refrigerant (7/16 UNF 20 threads per inch) and
one for R410A. If the vacuum pump oil (mineral) mixes with R410A
a sludge may occur and damage the equipment.
Exclusive for HFC refrigerant.
Incidentally, the refrigerant cylinder comes with the refrigerant designation (R410A) and protector coating in the
U. Ss ARI specified rose color (ARI color code: PMS 507).
Also, the charge port and packing for refrigerant cylinder require 1/2 UNF 20 threads per inch corresponding to
the charge hoses port size.
FILE NO. SVM-10019
55
10-3. Indoor Unit
10-3-1. Installation Location
A location which provides enough spaces around
the indoor unit as shown in the diagram.
A location where there are no obstacle near the air
inlet and outlet.
A location which allows easy installation of the piping
to the outdoor unit.
A location which allows the front panel to be opened.
The indoor unit shall be installed so that the top of
the indoor unit is positioned at least 6.6 ft (2 m) in
Location that will bear weight of the unit.
Remote controller
Should be placed where there are no obstacles,
such as curtains, that may block the signal.
Do not install the remote controller in a place
exposed to direct sunlight or close to a heating
source, such as a stove.
Keep the remote controller at least 3.3 ft (1 m) away
from the nearest TV set or stereo equipment.
(This is necessary to prevent image disturbances or
noise interference.)
The location of the remote controller should be
determined as shown below.
Fig. 10-3-1
10-3-2. Cutting a Hole and Mounting the
mounting Plate
Cutting a hole
When installing the refrigerant pipes from the rear.
1. After determining the pipe hole position on the
mounting plate (
), drill the pipe hole 2-9/16 in.

(65 mm) at a slight downward slant to the outdoor
side.
NOTE :
When drilling into a wall that contains a metal lath,
wire lath or metal plate, be sure to use a pipe hole
brim ring sold separately.
Mounting the mounting plate
Indoor unit
(Top view) (Side view)
Remote
controller
Remote controller
I
n
d
o
o
r

u
n
i
t
Reception
range
Reception
range
1
7
Anchor bolt holes
Hook
Hook
Hook
Pipe hole
Pipe hole
Mounting
plate
Mounting screw
Weight
Indoor unit
Thread
6
.
6

f
t

(
2

m
)

o
r

m
o
r
e

f
r
o
m

o
o
r
7 in.
(170 mm)
3-11/32 in.
(85 mm)
2
-
2
9
/6
4
i n
.
(
6
2
m
m
)
3
-
1
7
/6
4
i n
.
(
8
2
.5
m
m
)
2-9/16 in. (65 mm)
3-15/16 in.
Pipe
hole
Fig. 10-3-2
FILE NO. SVM-10019
height. Also, it must be avoided to put anything on
the top of the indoor unit.
CAUTION
Direct sunlight on the indoor unit wireless
receiver should be avoided.
The microprocessor in the indoor unit should
not be too close to RF noise sources.
(For details, see the owner's manual.)
(100 mm)
The center of the pipe
hole is above the arrow.
Fig. 10-3-3
56
When the installation plate is directly
mounted on the wall
1. Securely fit the installation plate onto the wall by
screws with the upper and lower catches, that
hold the indoor unit, facing out.
2. To mount the installation plate on a concrete wall
use anchor bolts. Drill the anchor bolt holes as
illustrated in the above figure.
3. Install the installation plate horizontally and level.
CAUTION
When installing the mounting plate with mounting
screw, do not use the anchor bolt hole.
Otherwise, the unit may fall down and result in
personal injury and property damage.
Fig. 10-3-4
Fig. 10-3-5
CAUTION
Failure to firmly install the unit may result in
personal injury and property damage if the
unit falls.
In case of block, brick, concrete or similar type
walls, make 3/16 in. (5 mm) dia. holes in the wall.
Insert clip anchors for appropriate mounting screws
NOTE :
Secure four corners and lower parts of the mounting
plate with 4 to 6 mounting screws to install it.
Anchor bolt
Projection
9/16 in. (15 mm)
3/16 in. (5 mm) dia. hole
Clip anchor
(local parts)
7 Mounting screw
5/32 in. x 1 in.
10-3-3. Electrical Work
1. The supply voltage must be the same as the
rated voltage of the air conditioner.
2. Prepare a power source for the exclusive use of
the air conditioner.
NOTE :
Wire type :
minimum AWG 14.
CAUTION
This appliance can be connected to a main
circuit breaker in either of the following two
ways.
1. Connection to fixed wiring:
A switch or circuit breaker which discon-
nects all poles and has a contact separation
of at least 1/8 in. (3 mm) must be incorporated
in the fixed wiring. An approved circuit
breaker or switch must be used.
2. Connection with power supply plug:
Attach power supply plug with power cord
and plug it into wall outlet. An approved
power supply cord and plug must be used.
NOTE :
Perform wiring work being sure the wire length is
long enough.
How to connect the connecting cable
Installation plate
(Keep horizontal direction.)
or less
(4 mm x 25 mm)
W
.
1. Open the air inlet grille upward.
2. Remove the screws securing the front panel.
3. Slightly open the lower part of the front panel,
then pull the upper part of the front panel toward
you to remove it from the rear plate.
4. Insert the condit pipe (according to the local rule)
into the pipe hole on the wall.
5. Remove the conduit mount by loosening the fixing
screw. (Fig. 10-3-7)
6. Fix conduit pipe to conduit mount with lock nut.
7. Pull out the connecting wire through the conduit pipe
and process the wire. (Fig. 10-3-8)
8. Take out the wire to the front and fix it to the terminal
block. Be careful not to make mis-wiring (Fig. 10-3-9)
9. Firmly tighten the terminal screws to prevent them
from loosening. Tightening torque: 0.9 lbf. ft (1.2 Nm).
After tightening, pull the wires lightly to confirm that
they of not move.
10. Secure the connecting wire with the cord clamp.
11. Fix the conduit mount back to the body by fixing a screw.
12. Fix the front panel, terminal cover and air inlet grille
on the indoor unit.
10-3-4. Wiring Connection
FILE NO. SVM-10019
57
CAUTION
Be sure to refer to the wiring system diagram
labeled inside the front panel.
Check local electrical regulations for any
specific wiring instructions or limitations.
10-3-5. Piping and Drain Hose Installation
Piping and drain hose forming
Since condensation results in machine trouble,
make sure to insulate both the connecting pipes
separately.
(Use polyethylene foam as insulating material.)
NOTE :
Use stranded wire only.
Wire type : minimum AWG14
Fig. 10-3-10
1. Die-cutting front panel slit
Cut out the slit on the left or right side of the front
panel for the left or right connection and the slit
on the bottom left or side of thefront panel for the
bottom left or right connection with a pair of
nippers.
2. Changing drain hose
For left connection, left-bottom connection and
rear-left connections piping, it is necessary to
relocate the drain hose and drain cap.
CAUTION
How to remove the drain cap
Clip drain cap with needle-nose pliers, and pull out.
Fig. 10-3-11
How to remove the drain hose
The drain hose is secured in place by a screw.
Remove the screw securing the drain hose, then pull
out the drain hose.
D
i
e
-
c
u
t
t
i
n
g
F
r
o
n
t

p
a
n
e
l

s
l
i
t
C
h
a
n
g
i
n
g
d
r
a
i
n

h
o
s
e
P
i
p
i
n
g

p
r
e
p
a
r
a
t
i
o
n
Rear right
Rear left
Bottom left
Left
Bottom right
Right
Screw
Drain hose
Fig. 10-3-12
3
1
2
Air inlet grille
Front panel
L1 L2 S L1 L2 S
Cord clamp
Terminal block
Terminal cover
Screw
Ground line
Screw
Connecting cable
Screw
Front panel
S
L2
L1
Ground
line
4-5/16 in. (110 mm)
3-5/32 in. (80 mm)
13/16 in. (20 mm)
3/8 in. (10 mm)
Fig. 10-3-9
Fig. 10-3-6
Fig. 10-3-7
Fig. 10-3-8
FILE NO. SVM-10019
Conduit pipe
Conduit mount Fixing screw
Lock nut
Inter connecting
cable
58
3/16 in.
No gap
Do not apply lubricating oil
(refrigerant machine oil)
when inserting the drain cap.
If applied, deterioration and
drain leakage of the drain
plug may occur.
How to attach the drain cap
1. Insert hexagonal wrench 3/16 in. (4 mm).
Fig. 10-3-13
2. Firmly insert drain cap.
Fig. 10-3-14
How to attach the drain hose
Always use the original screw that secured the
drain hose to the unit. If using a different screw
may cause water to leak.
Insert the drain hose firmly until the connector
contacts with the insulation, then secure it in place
using the original screw.
CAUTION
Securely insert the drain hose and drain cap;
otherwise, water may leak.
In case of right or left piping
After making slits on the front panel with a knife or
similar tool, cut them out with a pair of nippers or
an equivalent tool.
Fig. 10-3-15
Fig. 10-3-16
Left-hand connection with piping
Bend the connecting pipes so that they are posi-
tioned within 1-5/8 in. (43 mm) above the wall surface.
If the connecting pipes are positioned more than
1-5/8 in (43 mm) above the wall surface, the indoor
unit may be unstable.
When bending the connecting pipe, make sure to
use a spring bender to avoid crushing the pipe.
Refer to the table below for the bending
radius of each connection pipe.
Fig. 10-3-17
NOTE :
If the pipe is incorrectly bent, the indoor unit may be
unstable on the wall.
After passing the connecting pipe through the pipe
hole, connect the connecting pipe to the auxiliary
pipes and wrap the facing tape around them.
In case of bottom right or bottom left piping
After making slits on the front panel with a knife or
similar tool, cut them out with a pair of nippers or
an equivalent tool.
To connect the pipe after installation of the
unit (figure)
Outer diameter
1/4 in. (6.35 mm)
3/8 in. (9.52 mm)
1/2 in. (12.7 mm)
Bending radius
1-3/16 in. (30 mm)
1-9/16 in. (40 mm)
1-31/32 in. (50 mm)
Slit
Slit
(4 mm)
Insert a hexagon
wrench 3/16 in (4 mm)
8
0
Liquid side
Gas side
(To the forefront of are)
Outward form of indoor unit
R 1-3/16 in. (R 30 mm) (Use polisin
(polyethylene) core or the like for
bending pipe.)
Use the handle of screwdriver, etc.
9-1/16in.
(230mm)
1
-
5
/
8

in
.

(
4
3

m
m
)
10-5/8 in.
(270 mm)
FILE NO. SVM-10019
59
CAUTION
Bind the auxiliary pipes (two) and connecting
cable with facing tape tightly.
In case of leftward piping and rear-leftward
piping, bind the auxiliary pipes (two) only with
facing tape.
Fig. 10-3-18
Carefully arrange the pipes so that none of the
pipes stick out of the rear plate of the indoor unit.
Carefully connect the auxiliary pipes and
connecting pipes to each other and cut off the
insulating tape wound on the connecting pipe
to avoid double-taping at the joint, moreover,
seal the joint with the vinyl tape, etc.
Since condensation can result in machine
performance trouble, be sure to insulate both
connecting pipes. (Use polyethylene foam as
insulating material.)
When bending a pipe, be careful not to crush it.
10-3-6. Indoor Unit Installation
1. Pass the pipe through the hole in the wall, and
hook the indoor unit on the installation plate at
the upper hooks.
2. Swing the indoor unit to right and left to confirm
that it is firmly hooked on the installation plate.
3. While pressing the indoor unit onto the wall, hook
it at the lower part on the installation plate.
Pull the indoor unit toward you to confirm that it is
firmly hooked on the installation plate.
Installation
plate
Indoor unit
Connecting
cable
Auxiliary pipes
10-3-7. Drainage
1. Run the drain hose at a downward sloped angle.
NOTE :
Hole should be made at a slight downward slant
on the outdoor side.
Fig. 10-3-21
2. Put water in the drain pan and make sure that the
water is being drained outside.
3. When connecting extension drain hose, insulate
the connection part of extension drain hose with
shield pipe.
Fig. 10-3-22
CAUTION
Install the drain pipe for proper drainage.
Improper drainage can result in water dripping
inside the room.
This air conditioner has been designed to drain
water collected from condensation which forms on
the back of the indoor unit, to the drain pan.
Therefore, do not locate the power cord and other
parts at a high place than the drain guide.
Fig. 10-3-19
For detaching the indoor unit from the installation
plate pull the indoor unit toward you while pushing
the bottom up at the specified places.
Fig. 10-3-20
Push Push
Push (unhook)
1 Installation
plate
Hook here
2
Hook
1
(50 mm)
or more
Do not rise the drain hose. Do not form the drain hose
into the waved shape.
Do not put the
drain hose end
into water.
Do not put the drain
hose end in the
drainage ditch.
Shield pipe
Extension drain hose Inside the room Drain hose
Space for
pipes
Wall
Drain
guide
Fig. 10-3-23
2 in.
FILE NO. SVM-10019
60
10-4. Outdoor Unit
10-4-1. Installation Location
A location which provides enough space around the
outdoor unit as shown in the diagram.
A location which can bear the weight of the outdoor
unit and does not allow an increase in noise level
and vibration.
A location where the operation noise and discharged
air do not disturb neighbors.
A location which is not exposed to a strong wind.
A location free of combustible gases.
A location which does not block a passage.
A location where the drain water does not cause any
problems.
Depending on snow level, use a field fabricated ice
or snow stand.
When the outdoor unit is to be installed in an elevated
position, be sure to secure its feet.
Precautions for adding refrigerant
Use a scale having a precision with at least 10 g
per index line when adding the refrigerant.
Do not use a bathroom scale or similar instrument.
Use liquid refrigerant when refilling the refrigerant.
Since the refrigerant is in liquid form, it can fill
quickly.
Therefore, perform the filling operation carefully
and insert the refrigerant gradually.
CAUTION
1. Install the outdoor unit without anything
blocking the discharging air.
2. When the outdoor unit is installed in a place
always exposed to strong winds like on the
coast or on a high story of a building, secure
the normal fan operation using a duct or a
wind shield.
3. Especially in windy areas, install the unit to
prevent the admission of wind.
4. Installation in the following places may result
in trouble.
Do not install the unit in such places.
A place full of machine oil.
A saline-place such as the coast.
A place full of sulfide gas.
A place where high-frequency waves are
likely to be generated, such as from audio
equipment, welders, and medical equip-
ment.
Fig. 10-4-1
Strong
wind
FILE NO. SVM-10019
FILE NO. SVM-10019

Do not apply excess torque. Otherwise, the nut
may crack depending on the conditions.
Outer dia. of copper pipe Tightening torque
1/4 in. (6.35 mm) 10 to 13 lbf.ft (14 to 18 Nm)
Half union Flare nut
Externally
threaded side
Internally
threaded side
Use a wrench to secure. Use a torque wrench to tighten.
CAUTION
10-4-2. Refrigerant Piping Connection
Flaring
1. Make sure you have enough pipe to reach indoor unit.
90 Obliquity Roughness Warp Warp
2. Cut the pipe with a pipe cutter.
3. Insert a flare nut into the pipe and flare the pipe.
Tightening connection
Align the centers of the connecting pipes and tighten
the flare nut as far as possible with your fingers.
Then tighten the nut with a two wrenches as show
below.
Fig. 10-4-2
Fig. 10-4-3
Tightening torque for connection of flare pipe
The pressure of R410A is higher than R22.
(Approx. 1.6 times.) Therefore securely tighten the
flare pipes which connect the outdoor unit and the
indoor unit with the specified tightening torque
using a torque wrench.
Flare at
indoor unit side
Flare at
outdoor unit side
10-4-2. Wiring Connection
NOTE
All wiring and connections must comply with NEC,
CEC, local codes.
Connect all wires to the correct terminal on the
wiring terminal blocks.
Make sure that all connectors are secure.
Size connectors per the ratings listed in the
system requirement section.
System interconnections should be minimum
AWG14.
1. MOUNT THE OUTDOOR UNIT POWER
DISCONNECT.
2. ROW POWER WIRING FROM MAIN BOX TO
DISCONNECT PER NEC AND LOCAL CODES.
3. Remove the valve cover and the cord clamp from
the outdoor unit.
4. Fix conduit connector to conduit plate by lock nut
and secure it tightly. Connect the power supply and
connecting cables to the terminal block as shown
in figure and secure it tightly with screws.
5. You should not have extra cables.
6. Secure the power cord and the connceting cable
with the cord clamp.
7. Attach the electric parts cover and the valve cover
on the outdoor unit.
8. RUN PIPING AND INTERCONNECTING CABLE
TO THE INDOOR UNIT.
10-4-3. Electrical Work
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
The unit cabinet must have an uninterrupted or
unbroken ground to minimize personal injury if an
electrical fault should occur. The ground may
consist of electrical wire or metal conduit when
installed in accordance with existing electrical
codes.
Before performing service or maintenance, be sure
main power switch is turned OFF.
WARNING
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equip-
ment damage or improper operation.
Unit failure as a result, or operation on improper
line voltage or excessive phase imbalance
constitutes abuse and may cause damage to
electrical components. Such operation could void
any applicable warranty.
CAUTION
61
1. The supply voltage must be the same as the rated
voltage of the air conditioner.
2. Prepare the power source for exclusive use with the
air conditioner.
NOTE : Power supply cord
Stripping length of the Power supply cord
and Inter connecting cable
L1 L2 L1 L2 S
Inter connecting cable Power supply cord
Terminal block
Unit : inch (mm)
L1 L2 L1 L2 S
Ground line
Connecting cable Power cord
Ground line
3
/8
(1
0
)
3
/8
(1
0
)
1
-
3
/
1
6

(
3
0
)
2
-
1
2
/
1
6

(
7
0
)3
/8
(1
0
)
3
/8
(1
0
)
1
-
3
/
1
6

(
3
0
)
1
-
9
/
1
6

(
4
0
)
Conduit plate
Connector
Lock nut
Valve cover
Wrong wiring connection may cause some
electrical parts burn out.
Be sure to comply with LOCAL CODES.
Every wire must be connected firmly.
If incorrect or incomplete wiring is carried out,
it will cause an ignition or smoke.
CAUTION
Fig. 10-4-4
Fig. 10-4-5
Fig. 10-4-6
NOTE : Inter connecting cable
10-5. EVACUATING
10-5-1. Evacuating
After the piping has been connected to the indoor unit,
you can perform vacuuming together at once.
Vacuuming

Evacuate the air in the connecting pipes and in the
indoor unit using a vacuum pump. Do not use the
refrigerant in the outdoor unit. For details, see the
manual of the vacuum pump.
Using a vacuum pump
Be sure to use a vacuum pump with counter-flow
prevention function so that inside oil of the pump does
not flow backward into pipes of the air conditioner
when the pump stops.
(If oil inside of the vacuum pump enters the air
conditioner, which use R410A, refrigeration cycle
trouble may happen.)
1. Connect the charge hose from the manifold valve
to the service port of the packed valve at gas side.
2. Connect the charge hose to the port of the vacuum
pump.
3. Open fully the low pressure side handle of the
gauge manifold valve.
4. Operate the vacuum pump to start evacuating.
Perform evacuating for about 15 minutes if the
piping length is 66 feet (20 m). (15 minutes for
66 feet) (assuming a pump capacity of 27 liters
per minute) Then confirm that the compound
pressure gauge reading is -101 kPa (-76 cmHg).
5. Close the low pressure side valve handle of the
gauge manifold valve.
6. Open fully the valve stem of the packed valves
(both gas and liquid sides).
7. Remove the charging hose from the service port.
8. Securely tighten the caps on the packed valves.
FILE NO. SVM-10019
62
Packed valve at
liquid side
Service port (Valve core
(Setting pin))
Packed valve at gas side
Vacuum
pump
Vacuum pump adapter for
counter-flow prevention
(For R410A only)
Charge hose
(For R410A only)
Handle Hi
(Keep full closed)
Manifold valve
Pressure gauge Compound pressure gauge
Handle Lo
Charge hose
(For R410A only)
Connecting pipe
101 kPa
(76 cmHg)
.
Gas side
1/2 in. (12.70 mm)
37 to 46 lbf.ft
(50 to 62 Nm)
Gas side
3/8 in. (9.52 mm)
24 to 31 lbf.ft
(33 to 42 Nm)
Liquid side
1/4 in. (6.35 mm)
10 to 13 lbf.ft
(14 to 18 Nm)
Service port
10 to 13 lbf.ft
(14 to 18 Nm)

Hexagon wrench
is required.
3
/
1
6

in
.

(
4

m
m
Fig. 10-5-1
KEEP IMPORTANT 5 POINTS FOR PIPING
WORK.
(1) Take away dust and moisture (inside of the
connecting pipes).
(2) Tighten the connections (between pipes and
unit).
(3) Evacuate the air in the connecting pipes using
a VACUUM PUMP.
(4) Check gas leak (connected points).
(5) Be sure to fully open the packed valves before
operation.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equip-
ment damage or improper operation.
Never use the system compressor as a vacuum
pump.
CAUTION
FILE NO. SVM-10019
10-5-2. Packed valve handling precautions
Open the valve stem until it touches the stopper.
Once it is in contact with the stopper, refrain form
applying any more force than is necessary.
Securely tighten the valve stem cap with torque
in the following table:
Fig. 10-5-2
10-6. SYSTEM REQUIREMENTS
Minimumrefrigerantlinelengthbetweentheoutdoor
unitandindoorunitis
6.6ft.(2m).
Maximumpipelengths
AllowablePipelengthT
(ft(m))
Heightdifference
(ft(m))
66(20) 33(10)
Refrigerant pipe sizes
H T
Liquidside Gasside
Outer
Diameter
In.(mm)
Thickness
In.(mm)
Outerdiameter
In.(mm)
Thickness
In.(mm)
(09,12LKV) (15,17,22LKV)
1/4(6.35) 0.03(0.8) 3/8(9.52) 1/2(12.70) 0.03(0.8)
Bothlinesneedtobeinsulated.Useaminimum
5/16in(8mm)wallthickness.
10-6-1. Piping (Field supplied)
(IndoorOutdoorH)
Insulation
63
64
10-7. OTHERS
10-7-1. Gas Leak Test
Check the are nut
connections for the
gas leak with a gas
leak detector or
soap water.
Check places for
are nut connection
(indoor unit)
Check places for
the outdoor unit.
Valve cover
10-7-2. Test Operation
To switch the TEST RUN (COOL) mode, press RESET
button for 10 seconds. (The beeper will make a short
beep.)
Fig. 10-7-1
RESET
RESET button
10-7-3. Auto Restart Setting
This product is designed so that, after a power failure,
it can restart automatically in the same operating mode
as before the power failure.
The product was shipped with Auto Restart function
in the on position. Turn it off as required.
Information
10-7-4. How to cancel the Auto Restart
1. Press and hold the RESET button on the indoor unit
for 3 seconds to cancel the operation. (3 beep sound
but OPERATION lamp does not blink)
2. Press and hold the RESET button on the indoor unit
for 3 seconds to set the operation. (3 beep sound and
OPERATION lamp blink 5 time/sec for 5 seconds)
Do not operate ON timer and OFF timer3
Note : Default setting of auto restart operation is OK
Fig. 10-7-2
Refrigerantcharge
Unit:ft(mm)
Refrigerantcharge
LengthofrefrigerantPipe
connectedtoIndoor/
outdoorunit
Additionalrefrigerant
6.6-50
(2-15m)
None
50-66
(15-20m)
Add0.22oz/ft(20g/m)of
Refrigerantforpipingthatexceeds
50ft(15m)upto66ft(20m)
*CautionduringadditionofrefrigerantMax.amountof
additionalrefrigerantis0.22lbs(100g).
Chargetherefrigerantaccurately.Overchargingmay
causeserioustroublewiththecompressor.
*Minimumrefrigerantpipeis6.6ft(2m).
Usingpipeshorterthanthatmaycauseamalfunctionof
thecompressororotherdevices.
Thepowersupplyshallbeconnectedtotheoutdoorunit
by3wires.
Theconnectingcablebetweentheindoorunitandoutdoor
unitis4wires.
Thiscableprovidesthepowerfortheindoorunitandthe
communicationsignalbetweentheoutdoorunitandindoor
unit.
Consultlocalbuildingcodes,NEC(NationalElectricalCode)
orCEC(CanadianElectricalCode)forspecialrequirements.
Thefollowingaretheelectricalrequirements.
10-6-2. Power supply Connection and Connecting

Cable
Product
Model
Item
Fuse/CircuitBreakerofmain
powersupply
Connectto
FCU/CDU
Powersupplycord
(Notprovide)
Interconnecting
cablebetween
FCU&CDU
(Notprovide)
Size
4(L1,L2, S, )
AWG14
No.ofCore
Size AWG14
No.ofCore
15A
CDU
3(L1,L2, )
RAS-12LKV-UL
RAS-12LAV-UL
Max.Current. 8.5A 13.0A
FCU
CDU
RAS-09LKV-UL
RAS-09LAV-UL
FILE NO. SVM-10019
Remote controller A- B selection
To separate using of remote controller for each indoor
unit in case of 2 air conditioner are installed nearly.
Remote controller B Setup.
1. Push RESET button on the indoor unit to turn the
air conditioner ON.
2. Point the remote controller at the indoor unit.
3. Push and hold CHK button on the remote controller
by the tip of the pencil.
00 will be shown on the display.
4. Push MODE during pushing CHK, B will show on
the display and 00 will disappear and the air
conditioner will turn OFF.
The remote controller B is memorized.
Note :
1. Repeat above step to reset Remote Controller to
be A.
2. Remote controller A have not A display.
3. Detault setting of remote controller from factory is A.
10-7-5. Remote Controller A or B Selection
Setting
When two indoor units are installed in the
separated rooms, it is not necessary to change
the selector switches.
Remote controller A or B selection
When two indoor units are installed in the same
room or adjacent two rooms, if operating a unit,
2 units may receive the remote controller signal
simultaneously and operate. In this case, the
operation can be preserved by setting either one
indoor unit or remote controller to B setting.
(Both are set to A setting in factory shipment.)
The remote controller signal is not received when
the settings of indoor unit and remote controller are
different.
There is no relation between A setting/B setting and A
room/B room when connecting the piping and cables.
Fig. 10-5-1
1. Push and hold CHK button on the Remote
Control by the tip of the pencil, "00" will be
shown on the display.
2. Press SLEEP during pushing CHK
Temperature unit F - C selection
Note :
1. Repeat above step to reset Remote Controller to
be F.
2. Operation mode and temperature set will reset to
initial setting after change the temperature unit.
3. Default setting of Remote Control from factory
is F.

PRESET FAN
BDisplay
00Display
FILE NO. SVM-10019
65
66
11. HOW TO DIAGNOSE THE TROUBLE
The pulse motor circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according
to the trouble diagnosis procedure as described below. (Refer to the check points in servicing written on the
wiring diagrams attached to the indoor/outdoor units.)
Table 11-1
K Precautions when handling the new inverter (3DV Inverter)
CAUTION: HIGH VOLTAGEN
The high voltage circuit is incorporated.
Be careful to do the check service, as the electric shock may be caused in case of touching parts on the
P.C. board by hand.
The new inverter (3DV inverter) will be incorporated starting with this unit.
(3DV: 3-shunt Discrete Vector control)
K The control circuitry has an uninsulated construction.
No.
1
2
3
4
5
Troubleshooting Procedure
First Confirmation
Primary Judgment
Judgment by Flashing LED of Indoor Unit
Self-Diagnosis by Remote Controller
Judgment of Trouble by Every Symptom
Page
62
63
63
64
67
No.
6
7
8
9
10
Troubleshooting Procedure
How to Check Simply the Main Parts
Troubleshooting
How to Diagnose Trouble in Outdoor Unit
How to Check Simply the Main Parts
How to Simply Judge Whether Outdoor
Fan Motor is Good or Bad
Page
72
73
75
76
81
IGBT 6
FET 6
MCU
Compressor
Fan motor
Shared potential
Driver
Driver
Amplifier
Amplifier
Fig. 11-1
FILE NO. SVM-10019
67
CAUTION
A high voltage (equivalent to the supply voltage) is also energized to ground through the
sensors, PMV and other low-voltage circuits. The sensor leads and other wires are covered
with insulated tubes for protection. Nevertheless, care must be taken to ensure that these
wires are not pinched.
Take sufficient care to avoid directly touching any of the circuit parts without first turning off
the power.
At times such as when the circuit board is to be replaced, place the circuit board assembly in
a vertical position.
Laying the board flat on an electrically conductive object (such as the top panel of the air conditioner's
outdoor unit) while a charge is still retained by the electrolytic capacitors of the inverter's main circuit may
cause short-circuiting between the electrolytic capacitors and secondary circuit components and result in
damage to the components.
Sensor leads
Do NOT lay the circuit board assembly flat.
K Precautions when inspecting the control section of the outdoor unit
NOTE :
A large-capacity electrolytic capacitor is used in the outdoor unit controller (inverter). Therefore, if the power
supply is turned off, charge (charging voltage DC265 to 360V) remains and discharging takes a lot of time.
After turning off the power source, if touching the charging section before discharging, an electrical shock may
be caused. Discharge the electrolytic capacitor completely by using soldering iron, etc.
< Discharging method >
1. Remove the inverter cover (plating) by opening four mounting claws.
2. As shown below, connect the discharge resistance (approx. 10040W) or plug of the soldering iron to
voltage between + terminals of the C14 (CAUTION HIGH VOLTAGE is indicated.) electrolytic capacitor
(500F/400V) on P.C. board, and then perform discharging.
Fig. 11-2
Discharging position
(Discharging period
10 seconds or more)
Plug of
soldering iron
Inverter cover
P. C. board
(Soldered surface)
Fig. 11-3
FILE NO. SVM-10019
68
11-1. First Confirmation
11-1-1. Confirmation of Power Supply
Confirm that the power breaker operates (ON) normally.
11-1-2. Confirmation of Power Voltage
Confirm that power voltage is AC 208230 10%.
If power voltage is not in this range, the unit may not operate normally.
11-1-3. Operation Which is not a Trouble (Program Operation)
For controlling the air conditioner, the program operations are built in the microcomputer as described in the
following table.
If a claim is made for running operation, check whether or not it meets to the contents in the following table.
When it does, we inform you that it is not trouble of equipment, but it is indispensable for controlling and main-
taining of air conditioner.
Table 11-1-1
No.
1
2
3
4
5
6
Operation of air conditioner
When power breaker is turned ON, the
operation indicator (Green) of the indoor
unit flashes.
Compressor may not operate even if the
room temperature is within range of
compressor-ON.
In Dry and ECO mode, FAN (air flow)
display does not change even though FAN
(air flow select) button is operated.
Increasing of compressor motor speed
stops approx. 30 seconds after operation
started, and then compressor motor speed
increases again approx. 30 seconds after.
In AUTO mode, the operation mode is
changed.
In HEAT mode, the compressor motor
speed does not increase up to the maxi-
mum speed or decreases before the
temperature arrives at the set temperature.
Description
The OPERATION lamp of the indoor unit flashes when
power source is turned on. If [ ] button is
operated once, flashing stops.
(Flashes also in power failure)
The compressor does not operate while compressor
restart delay timer (3-minutes timer) operates.
The same phenomenon is found after power source has
been turned on because 3-minutes timer operates.
The air flow indication is fixed to [AUTO].
For smooth operation of the compressor, the compres-
sor motor speed is restricted to Max. 41 rps for 2 min-
utes, and Max.91 rps for 2 minutes to 3 minutes, respec-
tively after the operation has started.
After selecting Cool or Heat mode, select an operation
mode again if the compressor keeps stop status for 15
minutes.
The compressor motor speed may decrease by high-
temp. release control (Release protective operation by
temp.-up of the indoor heat exchanger) or current
release control.
FILE NO. SVM-10019
69
11-2. Primary Judgment
To diagnose the troubles, use the following methods.
1) Judgment by flashing LED of indoor unit
2) Self-diagnosis by service check remote controller
3) Judgment of trouble by every symptom
Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles.
11-3. Judgment by Flashing LED of Indoor Unit
While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the
contents of self-diagnosis are displayed with block on the indoor unit indication section.
Table 11-3-1
NOTES :
1. Some check code will flash display of the indoor unit, when the air conditioner operates with some limitation.
2. Some check code will flash display of the indoor unit and stop operation of the air conditioner.
3. When item B and C or item B and apart of item E occur concurrently, priority is given to the block of item B.
OPERATION (Green)
Flashing display (1 Hz)
OPERATION (Green)
TIMER (Yellow)
FILTER (Orange)
OPERATION (Green)
FILTER (Orange)
OPERATION (Green)
TIMER (Yellow)
OPERATION (Green)
Protective circuit operation for indoor P.C. board
Protective circuit operation for connecting cable
and serial signal system
Protective circuit operation for outdoor P.C. board
Protective circuit operation for others
(including compressor)
Indoor indication
lamp flashes.
Which lamp
does flash?
Item
A
B
C
D
E
Check
code
Block display Description for self-diagnosis
FILE NO. SVM-10019
When turn ON power supply.
Power supply ON after failure or OFF.
This flashing display is not air conditioner failure.
4. The check codes can be confirmed on the remote controller for servicing.
70
11-4. Self-Diagnosis by Remote Controller (Check Code)
1. If the lamps are indicated as shown B to E in Table 11-3-1, execute the self-diagnosis by the remote controller.
2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condi-
tion and indicates the information of the self-diagnosis on the display of the remote controller with the check
codes. If a fault is detected, all lamps on the indoor unit will flash at 5Hz and it will beep for 10 seconds
(Beep, Beep, Beep ... ). The timer lamp usually flashes (5Hz) during self-diagnosis.
11-4-1. How to Use Remote Controller in Service Mode
TEMP
Press [CHECK] button with a tip of pencil to set the
remote controller to the service mode.
is indicated on the display of the remote
controller.
Press [ON ] or [OFF ] button
If there is no fault with a code, the indoor unit will beep
once (Beep) and the display of the remote controller will
change as follows :
The TIMER indicator of the indoor unit flashes continuously.
(5 times per 1 sec.)
Check the unit with all 52 check codes ( to )
as shown in Table-11-4-1.
Press [ON ] or [OFF ] button to change the check
code backward.
If there is a fault, the indoor unit will beep for 10
seconds (Beep, Beep, Beep...).
Note the check code on the display of the remote
controller.
2-digits alphanumeric will be indicated on the display.
All indicators on the indoor unit will flash.
(5 times per 1 sec.)
1
2
3
4
Alphanumeric characters are
used for the check codes.
is 5. is 6.
is A. is B.
is C. is D.
PR E S E T
ONE -TOUCH
QUIE T
S WING
TIME R
ON
FILTE R CHK CLOCK
OFF
CLR
S LE E P S E T
FIX Hi-POWE R E CO
COMFOR T
S LE E P
MODE
TE MP
FAN
TOSHI BA

Fig. 11-4-1
Press [ ] button to release the service mode.
The display of the remote controller returns to as it
was before service mode was engaged.
Press [CLR] button. After service finish for clear
service code in memory.
"7F" is indicated on the display of the remote
control.
FILE NO. SVM-10019
C/ F
71
FILE NO. SVM-10019
11-4-2 Caution at Servicing
1.Afterusingtheservicemodeofremotecontrollerfinished,pressthe[]buttontoresettheremotecontrollerto
normalfunction.
2.Afterfinishedthediagnosisbytheremotecontroller,turnOFFpowersupplyandturnitsONagaintoresettheair
conditionertonormaloperation.However,thecheckcodesarenotdeletedfrommemoryofthemicrocomputer.
3.Afterservicingfinished,press[CLR]buttonofremotecontrollerunderservicemodestatustosendcode"7F"tothe
indoorunit.Thecheckcodestoredinmemoryiscleared.
Table11-4-1
Blockdistinction Operationofdiagnosisfunction
Check
code
Block
Check
code
Causeofoperation
Air
conditioner
status
Displayflashing
error
IndoorP.C. TAsensor;Theroom Operation Flasheswhen 1.CheckthesensorTAandconnection.
board. temperaturesensoris continues. errorisdetected. 2.Incaseofthesensorandits
short-Circuitordisconnection. connectionisnormal,checkthe
P.C.board.
TCsensor;Theheat Operation Flasheswhen 1.CheckthesensorTCandconnection.
exchangertemperature continues. errorisdetected. 2.Incaseofthesensorandits
sensoroftheindoorunit connectionisnormal,checkthe
isoutofplace,disconnection, P.C.board.
short-circuitormigration.
Fanmotoroftheindoorunit AllOFF Flasheswhen 1.Checkthefanmotorandconnection.
isfailure,lock-rotor,short- errorisdetected. 2.Incaseofthemotorandits
circuit,disconnection,etc. connectionisnormal,checkthe
OritscircuitonP.C.board P.C.board.
hasproblem.
Othertroubleontheindoor Dependon Dependon ReplaceP.C.board.
P.C.board. causeof causeof
failure. failure.
ActionandJudgment
FILE NO. SVM-10019
Block distinction Operation of diagnosis function
Check
code
Block
Check
code
Cause of operation
Air
conditioner
status
Display flashing
error
Serial signal 1) Defective wiring of the Indoor unit Flashes when 1) to 3) The outdoor unit never
and connecting connecting cable or operates error is detected. operate.
cable. miss-wiring. continue. Flashing stop Check connecting cable and correct
2) Operation signal has not Outdoor unit and outdoor unit if defective wiring.
send from the indoor unit stop. start to operate Check 25A fuse of inverter P.C. board.
when operation start. when the return Check 3.15A fuse of inverter
3) Outdoor unit has not signal from the P.C. board.
send return signal to the outdoor unit is Check operation signal of the indoor
indoor unit when operation normal. unit by using diode. Measure voltage
started. at terminal block of the indoor unit
4) Return signal from the between No.2 and No.3 (or L2 and S)
outdoor unit is stop during If signal is varied 15-60V continuously,
operation. replace inverter P.C. board.
Some protector If signal is not varied, replace indoor
(hardware, if exist) of the P.C. board.
outdoor unit open 4) The outdoor unit abnormal stop at
circuit of signal. some time.
Signal circuit of indoor If the other check codes are found
P.C. board or outdoor concurrently, check them together.
P.C. board is failure Check protector (hardware) such
in some period. as Hi-Pressure switch,
Thermal-Relay, etc.
Check refrigerant amount or any
possibility case which may caused
high temperature or high pressure.
Check operation signal of the indoor
unit by using diode. Measure voltage
at terminal block of the indoor unit
between No.2 and No.3 (or L2 and S)
If signal is varied 15-60V continuously,
replace inverter P.C. board.
If signal is not varied, replace indoor
P.C. board.
Action and Judgment
* Signal send only 1 minute and stop. Because of return signal from outdoor unit has not received.
** Signal resend again after 3 minutes stop. And the signal will send continuously.
*** 1 minute after resending, the indoor unit display flashes error.
VDC
Time (Min)
0
3 4 7 8
15
60
M
e
a
s
u
r
e
d

s
i
g
n
a
l

v
o
l
t
a
g
e

b
y

a
p
p
l
y

d
i
o
d
e
3 minutes Delay, start
counting from power
supply ON or remote
OFF.
3 minutes stop
* **
***
Sending signal of the indoor unit when have not return
signal from the outdoor unit.
Voltage variation stop
or have not voltage
output.
Note : Operation signal of the indoor unit shall be measured in the sending period as
picture below.
74
Check
code
Block
Check
code
Causeofoperation
Air
conditioner
status
Displayflashing
error
OutdoorP.C. Currentoninvertercircuit AllOFF Flashesafter 1.Removeconnectingleadwireofthe
board isoverlimitinshorttime. errorisdetected compressor,andoperateagain.
InverterP.C.boardis 4times*. 2.Ifoutdoorfandoesnotoperateor
failure,IGBTshortage,etc. operatebutstopaftersomeperiod,
Compressorcurrentis replacetheinverterP.C.board.
higherthanlimitation, 3.Ifoutdoorfanoperatesnormally,
lockrotor,etc. measure3-Phaseoutputofinverter
P.C.board(150-270VAC)atthe
connectingleadwireofcompressor.
4.If3-Phaseoutputisabnormal,replace
inverterP.C.Board.
5.If3-Phaseoutputisnormal,replace
compressor.(lockrotor,etc.)
Compressorposition-detect AllOFF Flashesafter 1.Removeconnectingleadwireofthe
circuiterrororshort-circuit errorisdetected compressor,andoperateagain.
betweenwindingof 4times*. 2.Ifoutdoorfandoesnotoperateor
compressor. operationbutstopaftersomeperiod,
replacetheinverterP.C.board.
3.Ifoutdoorfanoperatesnormally,
measureresistanceofcompressor
winding.Ifcircuitisshortage,replace
thecompressor.
Current-detectcircuitof AllOFF Flashesafter Eveniftryingtooperateagain,all
inverterP.C.boarderror. errorisdetected operationsstop,replaceinverter
4times*. P.C.board.
TEsensor;Theheat AllOFF Flashesafter 1.ChecksensorsTE,TSandconnection.
exchangertemperature errorisdetected 2.Incaseofthesensorsandits
sensoroftheoutdoorunit 4times*. connectionisnormal,checkthe
eitherTSsensor;Suction inverterP.C.board.
pipetemperaturesensor,
outofplace,disconnection
orshortage.
TDsensor;Dischargepipe AllOFF Flashesafter 1.ChecksensorsTDandconnection.
temperaturesensoris errorisdetected 2.Incaseofthesensorandits
disconnectionorshortage. 4times*. connectionisnormal,checkthe
inverterP.C.board.
Outdoorfanfailureorits AllOFF Flashesafter 1.Checkthemotor,measurewinding
drive-circuitontheinverter errorisdetected resistance,shortageorlockrotor.
P.C.boardfailure. 4times*. 2.ChecktheinverterP.C.board.
TOsensor;Theoutdoor Operation Recorderror 1.ChecksensorsTOandconnection.
temperaturesensoris continues. afterdetected 2.Incaseofthesensorandits
disconnectionorshortage. 4times*. connectionisnormal,checkthe
Butdoesnot inverterP.C.board.
flashdisplay.
ActionandJudgment
FILE NO. SVM-10019
73
Check
code
Block
Check
code
Causeofoperation
Air
conditioner
status
Displayflashing
error
Compressordriveoutputerror. AllOFF Flashesafter 1.Checkinstallationconditionssuchas
(Relationofvoltage,current errorisdetected packedvalveopening,refrigerant
andfrequencyisabnormal) 4times*. amountandpowersupply(rate+10%,
Overloadingoperationof bothofoperationandnonoperation
compressorcausedby condition).
over-chargerefrigerant, 2.CheckP.M.V.bymeasurethe
P.M.V.failure,etc. resistanceofthecoilandconfirmits
Compressorfailure(High operation(soundofinitial
current). operation,etc.)
3.Observeanypossibilitycausewhich
mayaffectoperationloadof
compressor.
4.Operateagain.Ifcompressor
operationisfailurewhen20seconds
passed(counttimefromoperation
startingofcompressor),replace
compressor.
*4times;Whenfirsterrorisdetected,erroriscountas1time,thenonceoperationisstopandre-started.
Afterre-startingoperationwithin6minutes,ifsameerrorisdetected,errorcountisadd(countbecome2times)
Whenerrorcountcomes4times,recorderrortocheckcode.Butafterre-startingoperation,ifnoerroris
detectedandairconditionercanoperatemorethan6minutes,errorcountiscleared.
Theothers Returnsignaloftheoutdoor Indoorunit Flasheswhen 1.Checkpowersupply(Rate+10%)
(including unithasbeensentwhen operates errorisdetected. 2.Iftheairconditionerrepeatoperates
compressor) operationstart.Butafter continue. Flashingstop andstopwithintervalofapprox.10
that,signalisstopsometime. Outdoorunit andoutdoorunit to40minutes.
Instantaneouspower stop. starttooperate Checkprotector(hardware)such
failure. whenthereturn asHi-Pressureswitch,
Someprotector signalfromthe Thermal-Relay,etc.
(hardware, if exist)ofthe outdoorunitis Checkrefrigerantamount,packed
outdoorunitopen normal. valveopeningandanypossibility
circuitofsignal. causewhichmayaffecthigh
Signalcircuitofindoor temperatureorhighpressure.
P.C.boardoroutdoor 3.Checkoperationsignaloftheindoor
P.C.boardisfailure unitbyusingdiode.Measurevoltage
insomeperiod. atterminalblockoftheindoorunit
between No.2 and No.3 or L2 and S
Ifsignalisvaried15-60Vcontinuously,
replaceinverterP.C.board.
Ifsignalisnotvaried,replaceindoor
P.C.board.
ActionandJudgment
FILE NO. SVM-10019
74
Check
code
Block
Check
code
Causeofoperation
Air
conditioner
status
Display
flashingerror
Compressordoesnotrotate. AllOFF Flashesafter 1.Removeconnectingleadwireofthe
Becauseofmissedwiring, errorisdetected compressor,andoperateagain.
missedphaseorshortage. 4times*. 2.Ifoutdoorfandoesnotoperateor
operationbutstopaftersomeperiod,
replacetheinverterP.C.board.
3.Ifoutdoorfanoperatesnormally,
measure3-Phaseoutputofinverter
P.C.board(150-270VAC)atthe
connectingleadwireofcompressor.
4.If3-Phaseoutputisabnormal,replace
inverterP.C.Board.
5.If3-Phaseoutputisnormal,measure
resistanceofcompressorwinding.
6.Ifwindingisshortage,replacethe
compressor.
Dischargetemperature AllOFF Flashesafter 1.ChecksensorsTD.
exceeded117
o
C. errorisdetected 2.Checkrefrigerantamount.
4times*. 3.CheckP.M.V.bymeasurethe
resistanceofthecoilandconfirmits
operation(soundofinitial
operation,etc.)
mayaffecthightemperatureof
compressor.
Compressorishighcurrent AllOFF Flashesafter 1.Checkinstallationconditionssuchas
thoughoperationHzis errorisdetected packedvalveopening,refrigerant
decreasedtominimumlimit. 4times*. amountandpowersupply(rate+10%,
Installationproblem. bothofoperationandnonoperation
Instantaneouspower condition).
failure. 2.CheckP.M.V.bymeasurethe
Refrigerationcycle resistanceofthecoilandconfirmits
problem. operation(soundofinitial
Compressorbreakdown. operation,etc.)
mayaffecthighcurrentofcompressor.
4.If1,2and3arenormal,replace
compressor.
*4times;Whenfirsterrorisdetected,erroriscountas1time,thenonceoperationisstopandre-started.
Afterre-startingoperationwithin6minutes,ifsameerrorisdetected,errorcountisadd(countbecome2times)
Whenerrorcountcomes4times,recorderrortocheckcode.Butafterre-startingoperation,ifnoerroris
detectedandairconditionercanoperatemorethan6minutes,errorcountiscleared.
ActionandJudgment
FILE NO. SVM-10019
75
76
Operation
Measure
Item by symptoms
Check item
Conceivable principle
cause
Parts
(DB01,C27,T01
and IC02)
are defective.
FILE NO. SVM-10019
11-5. Judgement of Trouble by Every Symptom
11-5-1. Indoor unit (Including remote controller)
Turn off power
supply once, and 5
second later, turn it
on again.
Is OPERATION
lamp blinking?
NO
YES
NO NO
YES
YES
Is it possible to
turn on
Indoor unit by
pressing
[ ] button
on remote
control?
Does
transmission
mark on
remote control
flash normally,
and is its signal
transmitted
properly?
Remote control is
defective.
Refer to (5)
Remote Control."
Is fuse (F01)
of indoor control
board blown?
Is voltage
(DC 12V or 5V)
indicated on
indoor
control board
normal?
Microcomputer
is defective.
Replace main
P.C. board.
YES
YES
NO
NO
Unit operates
normally.
Reconnect housing
Does
Connection between
main PC Board
and display PCB are
connect properly ?
"Troubleshooting for
(RAS-09LKV-UL)
YES
NO
(1) Indoor unit is not operated.
(2) Operation is not turned on though Indoor P.C. board is replaced
<Confirmation procedure>
NO
Turn off power supply once, and
5 second later, turn it on again.
Is OPERATION indicator flashing?
Is it possible to turn on
A/C by pushing
[ ] button
on remote controller?
Is voltage
(DC5V, 12V and 15V)
indicated on rear of
indoor control
board normal?
Does transmission mark
on remote controller flash
normally,and is its signal
transmitted properly?
Does fan
motor connector
between CN10 1
3 short-circuit?
Item by symptoms
Operation
Check Item
Considerable principle cause
Measures
Remote controller is defective.
Refer to (5) Troubleshooting
for remote controller.
Unit operates normally.
Replace main
P.C. board
Replace fan
motor.
Is fuse (F01)
of indoor control
board blown?
Microcomputer
is defective.
NO
NO
NO NO
NO
YES
YES
YES YES
YES
YES
Point remote to digital
camera. Can see infrared
ray at sending LED
when push [ ] button?
Replace remote control
Does connection
between PC Board
and reciver PCB
Reconnect housing
on camera monitor
YES
YES
are connect properly?
YES
NO NO
To item of
Indoor unit is not operated.
Turn on power supply.
Does OPERATION indicator flash?
Is wired correctly to white and
black lead wires of terminal block?
Correct wiring.
( RAS-12LKV-UL)
FILE NO. SVM-10019
NO
77
NO
YES
78
(3) Only the indoor motor fan does not operate
<Primary check>
1. Is it possible to detect the power supply voltage (AC208230V) between and on the terminal block?
2. Does the indoor fan motor operate in cooling operation?
(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned
on, to prevent a cold air from blowing in.)
( RAS-09LKV-UL)
<Check procedure>
Replace the fan motor.
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
Does the fan stop in
no operating status?
Control P.C. board is defective.
Start the operation
with low fan setting
in cool operation.
Does AC 115 V
or higher voltage apply
to between red and black
lead of fan motor?
Does the fan rotate?
Change the setting of
cooling to high fan.
Operation
stops
Shut off the power supply.
Does the cross flow
fan rotate normally?
Is the rotation signal (DC+5 V 0 V)
output between k (gray lead wire)
and l (brown lead wire) of the motor
connector (CN33) when rotating the
cross flow fan by hand in no operating
status? (1 pulse/one turn)
Turn on the power supply.
Replace
bearing of cross
flow fan
Turn the power supply.
Shut off the
power supply once.
Does the fan speed
become higher?
Reconecting the
interconnetion cable
and terminal
block.
Replace the P.C. board.
Normal
Replace the control
P.C. board.
Does an operation
LED 1 Hz blink?
Check connecting
cable or power
supply cord complely?
Check 5V at
display unit?
Main P.C. Board?
Does the fan motor
operate smoothly?
YES
NO
YES
YES
Change Display unit
YES
Check 5V at
NO
NO
YES
FILE NO. SVM-10019
NO NO
L1 L2
FILE NO. SVM-10019
( RAS-12LKV-UL )
Start to operate
indoor unit in cooling
operation at airflow
level LOW.
Turn off indoor unit and
remove connector from motor.
Then start to operate indoor
unit with remote controller.
Turn off indoor unit and remove
connector from motor.
Then push [ ] button
on remote controller to stop
flashing lamp on indoor unit.
Change airflow level
to HIGH.
Start to operate the
indoor unit in except
heating operation.
At this time, is it possible
to detect DC 1V or more
between 5 + and 3
of motor connector (CN31)?
(Check this condition
within 15 seconds after
starting unit.)
Start to operate the
indoor unit in except
heating operation.
At this time, is it possible to
detect DC 1V or more between
5 + and 3 of motor
connector (CN31)?
Is it possible to detect
DC 294325V between
1
+
and 3 of motor
connector (CN31).
(Motor connection condition)
Is it possible to detect DC 15V
between 4
+
and 3 of
motor connector (CN31).
DC 15V between 4 +
and 3 of motor
connector (CN31).
Does indoor
fan operate?
Peplace main
P.C. board.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
Turn off power
supply once, and
turn it on again.
DC 1V or more between
5 + and
3 of
motor connector (CN
31).
Does fan motor
continue to operate?
Peplace indoor
fan motor.
YES
YES
NO
NO
Does check
operation LED flash?
Does check connecting
cable or power supply
cord complely?
in terconnection cable
and terminal block
NO NO
YES
Does check
5V at display unit?
Replace
display unit
Does check 5V
at main P.C board?
Reconnecting the
NO
NO
YES
YES YES
A
B
79
Turn off indoor unit
and rotate cross-flow
fan by hand when the
unit is on standby.
At this time, is it possible to
detect DC 1V or more
between 5 + and 3
of motor connector
(CN31).
Is it possible to
change airflow level
to HIGH?
Is it possible to
rotate cross-flow fan by
hand properly?
Fan motor
operates normally.
Replace bearing
of cross-flow fan.
YES
YES
YES
NO
NO
NO
Does check cross-flow
fan bearing normal
condition?
Replace indoor
fan motor.
Peplace main
P.C. board.
Does check display
on remote show high?
Change the new PC
board. Does fan speed
change?
Replace
remote
Replace
motor
NO
NO
NO
YES
YES
YES
80
FILE NO. SVM-10019
A
B
81
Indoor fan starts rotating when power supply is turned on.
Measure voltage between 3 (GND : BLACK)
and 5 (V line : YELLOW) of motor connector (CN31)
while indoor fan motor is rotating.
DC 1.0V or more
P.C. board is defective.
6 (Blue)
5 (Yellow)
4 (White)
3 (Black)
2
1 (Red)
Motor is defective.
Under DC 1.0V
(Check output DC voltage of fan motor on P.C. board.)
CN31
Yellow
Black
P.C. board
DC
Replace P.C. board. Replace motor.
(For DC fan motor in RAS-12LKV-UL)
<Cause>
The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to inside of the motor.
If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning
on power supply.
<Inspection procedure>
FILE NO. SVM-10019
(For AC fan motor in RAS-09LKV-UL)
(4) Indoor fan motor automatically starts to rotate by turning on power supply
<Cause>
AC motor is only coil and Hall-IC inside packing all driving control or circuit locate on a main PC Board.
<Inspection procedure>
1. Turn on breaker.
2. After Fan motor operate, off A/C by remote controller.
3. Turn off breaker for a while, then turn it ON.
3.1. If fan motor not operate, it means an unit in Auto-restart operation. (see more detail in P. 44-45)
3.2. If Fan motor still operate, means P.C Board mal-function. Replace P.C Board.
3.2.1. Remove the grille.
3.2.2. Remove the cover terminal by release one screw.
3.2.3. Check DC voltage with CN31 connector while the fan motor is rotating.
1. Turn on breaker.
2. After Fan motor operate, off A/C by remote controller.
3. Turn off breaker for a while, then turn it ON.
3.1. If fan motor not operate, it means an unit in Auto-restart operation. (see more detail in P. 44-45)
3.2. If Fan motor still operate, follow the below.
NOTE :
Do not disconnect the connector while the fan motor is rotating.
Use a thin test rod.
82
NO
YES
Push the [ ] button.
Is transmission
mark indicated?
The unit does not beep at all.
Operation lamp on indoor
unit is not indicated.
Is receiver
on indoor unit
exposed to
direct sunlight?
Avoid direct
sunlight.
Keep indoor unit
away from
fluorescent light.
Does indoor unit
operate when moving
remote controller
near receiver or
indoor unit?
Batteries are
exhausted.
Point remote to
digital camera can
see infrared at sending
LED on carmera monitor
when push [ ] button?
Is transmission
mark indicated?
Reciver P.C. board
is defective.
Replace reciver
P.C. board.
Replace
batteries.
Replace
remote controller.
Normal
operation
Remote controller
is defective.
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Push the
[ ] button
Does indoor unit
beep and operate?
Reset by take off
battery the push
[ ] button till LCD
(5) Troubleshooting for remote controller
<Primary check>
Check that A or B selected on the main unit is matched with A or B selected on the remote controller.
FILE NO. SVM-10019
indication disclear
put battery again.
Is there any
fluorescent light
nearly?
Does A/C operate?
by push RESET button
of indoor unit.
Replace main
P.C. Board
83
Refer to the chart in 11-6.
Gas leak
P.M.V. is defective.
Miswiring of connecting wires of indoor/outdoor units
Clogging of pipe and coming-off of TC sensor
Gas circulation amount is down.
Measure gas pressure.
Gas shortage
Gas leak
Pipe clogging
Thermo. operation of compressor
Red
White
Terminal block
S5277G
Tester
S
Terminal block at indoor side
S5277G or equivalent
(Diode with rated voltage of 400V
or more is acceptable.)
To item of Outdoor unit does not operate.
11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)
(1) Outdoor unit does not operate
1) Is the voltage between L1 and of the indoor terminal block varied?
Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the follow-
ing diagram.
NOTE:
Measurement should be performed 2 minutes and 30 seconds after starting of the operation.
Be sure to prepare a diode for judgment.
Normal time : Voltage swings between DC15 and 60V. ................... Inverter Assembly check (11-8-1.)
Abnormal time : Voltage does not vary.
(2) Outdoor unit stops in a little while after operation started
<Check procedure> Select phenomena described below.
1) The outdoor unit stops 10 to 20 minutes after operation started, and 10 minutes or more are required to
restart the unit.
2) If the unit stops once, it does not operate until the power will be turned on again.
3) The outdoor unit stops 10 minutes to 1 hour after operation started, and an alarm is displayed.
(Discharge temp. error check code 03, 1E Sensor temp. error check code 02, 1C)
FILE NO. SVM-10019
S
L1
L2
84
NO
NO
NO
NO
YES
YES
YES
YES
YES
Gas leakage,
disconnection of TS/TC
sensors (Check code 02, 1C)
Discharge temp. error,
gas leakage
(Check code 03, 1E)
1C 1E
Gas amount check and valve clogging check
Remove TC sensor connector from the P.C. board in indoor unit.
(Remove connector from the P.C. board.)
Operate the air conditioner in COOL mode by RESET button on indoor unit
(Beep sound is heard if keeping pushed RESET button for 10 seconds.).
The operation enters temporary operation mode which fixes opening degree of compressor speed.
Check condensation at outlet of PMV, and then check operating pressure from the service port.
Valve drive check
Check the operating pressure from service port, and add gas if pressure is low.
Is connecter of coil connected to inverter?
Is coil of the pulse motor valve
(P.M.V.) correctly set?
Existence of condensation at outlet of P.M.V.
If there is condensation at outlet (1/4 inch=6.35mm valve side),
the valve is clogged.
Are temp. sensors of indoor/outdoor units correctly set to the holder?
NOTE :
The temperature sensors which are used to control pulse motor valve
include indoor heat exchanger sensor (TC), outdoor heat exchanger temp.
sensor (TE), outdoor suction temp. sensor (TS) and outdoor sensor (TO).
Set it correctly.
Set it correctly.
Set it correctly.
Replace coil valve.
Replace valve.
Add gas.
Disconnect PMV connector then check coil resistance.
Is it 464/Phase
(white-Red, Red-Orange, Yellow-Red, Blue-Red)?
11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E
<Check procedure>
FILE NO. SVM-10019
11-7. How to Diagnose Trouble in Outdoor Unit
YES
Turn ON the unit
by remote controller
and wait for 3 min.
Check component
parts of control board
assembly by visual.
(damage, burn,.. Etc.)
Check Power Supply
(Voltage Rate 10%)
Replace
fuse.
NO
YES
YES
YES
Turn OFF power
supply.
Check 25A
fuse (F01)
failure?

Remove connector
of compressor.
Replace
control board.
Check terminal
Voltage of electrolytic
capacitor are in
(Voltage Rate
Turn ON power
Supply.
NO
10%) x 1.414?
Replace
control board.
NO
(Cooling : 17C)
Connect discharge
resistance (approx. 100,
40W) or soldering iron
(plug) between +,
terminals of the electro-
lytic capacitor (500F )
of C14 (with printed
CAUTION HIGH VOLTAGE)
on P.C. board.
(Discharging period
10 seconds or more)
Plug of
soldering
iron
FILE NO. SVM-10019
A
85
86
YES
Does outdoor fan
operate normally?
Replace control
board.
YES
YES
Compressor
is normal
Check voltage of the
compressor connector
(AC150V-270V)?
Turn ON power
supply.
NO
Remove connector CN300 of
outdoor fan motor.
Check winding resistance by
ohmmeter are correct?
Check rotor locking by rotate
Turn OFF power
supply.
Replace outdoor
fan motor.
NO
Replace
compressor.
Replace control
board.
Replace
compressor.
YES
Does compresser
operate normally?
with hand. Can it rotate?
Turn OFF power
supply.
Check compressor
winding resistance
correct?
is in rate.
A
FILE NO. SVM-10019
NO
NO
YES
NO
FILE NO. SVM-10019
87
(2) Inspection procedures
1) When a P.C. board is judged to be defective,
check for disconnection, burning, or discolora-
tion of the copper foil pattern or this P.C. board.
2) The P.C. board consists of the following 2 parts
a. Main P.C. board part:
DC power supply circuit (5 V, 12 V),
Indoor fan motor control circuit, CPU and
peripheral circuits, buzzer, and Driving circuit
of louver.
b. Indication unit of infrared ray receiving
Infrared ray receiving circuit, LED:
11-8. How to Check Simply the Main Parts
11-8-1. How to check the P.C. board (Indoor unit)
(1) Operating precautions
1) When removing the front panel or the P.C.
board, be sure to shut off the power supply
breaker.
2) When removing the P.C. board, hold the edge
of the P.C. board and do not apply force to the
parts.
3) When connecting or disconnecting the connec-
tors on the P.C. board, hold the whole housing.
Do not pull at the lead wire.
PRESET
ONE-TOUCH
QUIET
SWING
TIMER
ON
FILTER CHK C/F CLOCK
OFF
CLR
SLEEP SET
FIX Hi-POWER ECO
COMFORT
SLEEP
MODE
TEMP
FAN
11-8-2. How to shorten time for start the compressor.
1. Turn on remote.
2. Setting requirment operation.
3. Push off remote.
This setting helps to shortern a compressor waiting period when operate cool, heat or dry mode.
A compressor suddenly starts one order of Remote controller is received.
4. Press [SET] button while pressing [CHECK] button
with a tip of a pencil.
5. Then press [ ] button to transmit the signal to the
indoor unit.
11-8-2. 8 P .C . Board Layout
100
30
40
50
60
70
80
90
20
10
0
0 10 20 30 40 50
R
e
s
i
s
t
a
n
c
e

v
a
l
u
e

(
k
)
Temperature ( C)
TD : Discharge temp. sensor
TA : Room temp. sensor
TC : Heat exchanger temp. sensor
TO : Outdoor temp. sensor
TE : Outdoor heat exchanger temp. sensor
TS : Suction temp. sensor
TA, TC, TO, TE, TS
TD
[1] Sensor characteristic table
( RAS-09LKV-UL )
88
FILE NO. SVM-10019
89
( RAS-12LKV-UL )
100
30
40
50
60
70
80
90
20
10
0
0 10 20 30 40 50
R
e
s
i
s
t
a
n
c
e

v
a
l
u
e

(
k
)
Temperature ( C)
TD : Discharge temp. sensor
TA : Room temp. sensor
TC : Heat exchanger temp. sensor
TO : Outdoor temp. sensor
TE : Outdoor heat exchanger temp. sensor
TS : Suction temp. sensor
TA, TC, TO, TE, TS
TD
[1] Sensor characteristic table
FILE NO. SVM-10019
90
11-8-3. Indoor Unit (Other Parts)
11-8-4. Outdoor Unit
No.
1
Part name
Room temp. (TA) sensor
Heat exchanger (TC) sensor
Checking procedure
Disconnect the connector and measure the resistance value with tester.
(Normal temp.)
No.
1
Part name
Compressor
(Model : DA111A1F-20F2)
Checking procedure
Measure the resistance value of winding by using the tester.
Red
White Black
Red
White Black
Resistance value
1435 144
at 20C
COM
COM
2 5 4
Y
W
R BL
1
GR 6
O 3
Position
Gray - White
Gray - Orange
Red- Yellow
Red- Blue
Resistance value
42 to 50
42 to 50
42 to 50
42 to 50
Temperature
Sensor
TA, TC (k)
10C 20C 25C 30C 40C
20.7 12.6 10.0 7.9 4.5
5
4
3
2
1 White
Yellow
Yellow
Yellow
Yellow 5
4
3
2
1
Refer to 11-5-1. (5).
Measure the resistance value of each winding coil by using the tester.
(Under normal temp. 25C)
Position
1 to 2
1 to 3
1 to 4
1 to 5
Resistance value
250 20
Refer to 11-5-1. (3) and (4).
at 20C
Disconnect the connector, and measure resistance value with the tester.
(Normal temperature)
Outdoor temperature sensor
(TO), discharge temperature
sensor (TD), suction
temperature sensor (TS),
outdoor heat exchanger
temperature sensor (TE)
Temperature
Sensor
TD (k)
TO,TS,TE (k)
10C 20C 25C 30C 40C 50C
100 64 50 41 27 18
20.7 12.6 10.0 7.9 4.5
2
3
Remote controller
Louver motor
MP24Z3T
4 Indoor fan motor
Measure the resistance value of each winding by using the tester.
Position
Red - White
White - Black
Black - Red
Resistance value
0.88 to 0.98
at 20C
DA111A1F-20F1
DA89X1C-1F-23FZ
1.04 to 1.16
Position
Red - White
White - Black
Black- Red
Resistance value
20 to 22
20 to 22
20 to 22
2
3
4
5
Outdoor fan motor
(Model : ICF-340UA0-2)
4-way valve coil
(Model : STF)
Pulse motor valve coil
(Model : CAM-MD12TCTH-4)
RAS-12LAV-UL
(Model : DA89X1C-23FZ2)
RAS-09LAV-UL
FILE NO. SVM-10019
at 20C
91
11-8-5. Checking Method for Each Part
No.
1
Part name
Electrolytic capacitor
(For boost, smoothing)
Checking procedure
1. Turn OFF the power supply breaker.
2. Discharge all three capacitors completely.
3. Check that safety valve at the bottom of capacitor is not broken.
4. Check that vessel is not swollen or exploded.
5. Check that electrolytic liquid does not blow off.
6. Check that the normal charging characteristics are shown in continuity test by
the tester.
MCC-5009
Soldered
surface
H
e
a
t

s
i
n
k

I
G
B
T

s
i
d
e
C12 C13 C14
Case that product is good
Pointer swings once, and returns
slowly. When performing test
once again under another
polarity, the pointer should return.
C12, C13, C14 500F
Resistance value
in good product
Tester rod
+
~
2
~
3
~
2
~
3

4
~ ~
~ + ~
1
1 2 3
(DB01)
4
4
2 3
+
1
+
10 to 20 when the multimeter probe

is reversed
2 Diode block 1. Turn OFF the power supply breaker.
2. Completely discharge the four electrolytic capacitors.
3. Remove the diode block from the PCB (which is soldered in place).
4. Use a multimeter with a pointer to test the continuity, and check that the
diode block has the proper rectification characteristics.
FILE NO. SVM-10019
92
11-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad
1. Symptom
Outdoor fan motor does not rotate.
Outdoor fan motor stops within several tens seconds though it started rotating.
Outdoor fan motor rotates or does not rotate according to the position where the fan stopped, etc.
Remote controller check code 02 : Outdoor block, 1A : Outdoor fan drive system error
2. Cause
The following causes are considered when the outdoor fan motor does not normally rotate.
1) Mechanical lock of the outdoor fan motor
2) Winding failure of the outdoor fan motor
3) Position-detect circuit failure inside of the outdoor fan motor
4) Motor drive circuit failure of the outdoor P.C. board
3. How to simply judge whether outdoor fan motor is good or bad
NOTE :
However, GND circuit error inside of the motor may be accepted in some cases when the above check is
performed.
When the fan motor does not become normal even if P.C. board is replaced, replace the outdoor fan motor.
If the resistance value between
1 (Red lead) 2 (White lead)
2 (White lead) 3 (Black lead)
3 (Black lead) 1 (Red lead)
of the connector
(CN300 : Motor winding)
is 17 to 25, it is normal.
Turn OFF the breaker.
Fan motor is normal.
Does the fan rotate without trouble
when rotating it with hands?
Disconnect two connectors (CN300) of the
outdoor fan motor from the outdoor P.C. board.
(Outdoor P.C. board error)
Fan motor error
YES
YES
NO
NO
CN300
FILE NO. SVM-10019
93
12. HOW TO REPLACE THE MAIN PARTS
WARNING
Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with
the repairs.
Electric shocks may occur if the power plug is not disconnected.
After the repairs have been completed (after the front panel and cabinet have been installed), perform a
test run, and check for smoking, unusual sounds and other abnormalities.
If this check is omitted, a fire and/or electric shocks may occur.
Before proceeding with the test run, install the front panel and cabinet.
Ensure that the following steps are taken when doing repairs on the refrigerating cycle.
1. Do not allow any naked flames in the surrounding area.
If a gas stove or other appliance is being used, extinguish the flames before proceeding.
If the flames are not extinguished, they may ignite any oil mixed with the refrigerant gas.
2. Do not use welding equipment in an airtight room.
Carbon monoxide poisoning may result if the room is not properly ventilated.
3. Do not bring welding equipment near flammable objects.
Flames from the equipment may cause the flammable objects to catch fire.
If keeping the power on is absolutely unavoidable while doing a job such as inspecting the cir-
cuitry, wear rubber gloves to avoid contact with the live parts.
Electric shocks may be received if the live parts are touched.
High-voltage circuits are contained inside this unit.
Proceed very carefully when conducting checks since directly touching the parts on the control circuit
board may result in electric shocks.
12-1. Indoor Unit
No.
Q
Part name
Front panel
Procedures
1) Stop operation of the air conditioner and
turn off its main power supply.
2) Open the air inlet grille, push the arm
toward the outside, and remove the grille.
3) Remove the left and right air filters.
Remarks
FILE NO. SVM-10019
94
No.
Q
Part name
Front panel
Procedures
4) Press "PUSH" part under the front panel
and remove hooks of the front panel from
the installation plate.
Remarks
Press
Front panel
Installation plate
5) Remove the front panel fixing screws.
(2 pcs.)
6) Take off three hooks of panel from rear
side.
<How to assemble the front panel>
1) Press three center positions and two lower center positions of the air outlet, and
then hang the hanging hooks (3 pcs.) at the top side of the front panel to the rear
plate.
2) Tighten two screws.
Incomplete hanging or incomplete pressing may cause a dewdrops or generation
of a fluttering sound.
2 Screws
Three hooks
FILE NO. SVM-10019
95
No. Part name
Electric parts
box assembly
Procedures
1) Follow the procedure up to 3) in
R
above.
2) Remove screw of earth lead attached to the
end plate of the evaporator.
3) Remove the lead wire cover, and remove
connector for the fan motor and connec-
tor for the louver motor from the electric
parts box assembly.
4) Pull out TC sensor from sensor holder of the
evaporator.
Remarks
<How to assemble the electric parts box>
1) Hook the top part of the electric parts box
assembly onto the claws on the back body,
and secure it using the fixing screw.
Now attach the display unit. Connect the
connectors for the fan motor and louver motor.
2) Secure the grounding wire using the fixing
screw. Insert the TC sensor into the sensor
holder.
* Be absolutely sure to loop the grounding
wire and TC sensor leads once at the
bottom.
5) Disengage the display unit by simply pushing
at the top of the display unit.
6) Remove the fixing screw that secures the
electric parts box assembly, and remove the
Electric part
box cover
assembly.
connector
AC fan motor
connector
Louver motor
Fixing screw
Earth Screw
TC sensor
k
connector

Fan motor
FILE NO. SVM-10019
96
No. Part name
Horizontal louver
Procedures
1) Remove shaft of the horizontal
louver from the back body.
(First remove the left shaft, and
then remove other shafts while
sliding the horizontal louver
leftward.)
Evaporator
(Heat exchanger)
1) Follow to the procedure in the item
S
.
2) Remove the pipe holder from the rear side of the main unit.
3) Remove two fixing screws at the left side of the end plate of the heat exchanger.
Remarks
4) Remove one fixing screw on the
heat exchage fixing holder to separate the
heat exchage from the back body.
2 screws
Heat exchanger fixing
holder
Screw
T

l
FILE NO. SVM-10019
5) Remove one screw at below right side of
heat exchanger that used for fixing between
heat exchanger and back body by Fix
Evaporator (DN)
The Fix Evaporator (DN) is used for
transportation only and can be removed
without any concern to unit operation.
Follow to 7) for removing.
6) Remove right side of the end plate from
two fixing rib while sliding slightly the
heat exchanger rightward.
Rib on the right side of the end plate
Fix Evaporator (DN)
Screw
Fix Evaporator (DN)
97
No. Part name
1) Follow to the procedure in the item .
2) Remove the two screws used to secure
the bearing base.
3) Remove the bearing base.
<Caution at assembling>
If the bearing is out from the housing,
push it into the specified position and then
incorporate it in the main body.
Two screws
Bearing
Bearing base
FILE NO. SVM-10019

Evaporator
(Heat exchanger)
7) Unscrew one screw which fix Electrical
Control Box and the casing. Move
Electrical Control Box until can see one
screw that fix Motor band and unscrew
it then remove FIX-EVA-DN
U
Bearing base
Procedures Remarks
T
Screw
Screw
Motor band
Screw
Tighten the screw of Motor band,
assembly Electrical Control Box then
tighten screw to complete reassembly.
98
No. Part name
Fan motor
Procedures
1) Follow to the procedure till item .
2) Loosen the set screw of the cross flow fan.
3) Remove two fixing screws of the motor cover
and them remove the motor cover.
4) Remove two more fixing screws of the
motor band and remove the motor band.
Remarks
5) Pull the fan motor outward.
Set screw
Two screw
Motor cover
Two screws on
motor band
o
Part name
FILE NO. SVM-10019
Reference condition of Fan Motor's assembly.
99
No. Part name
Cross flow fan
Procedures
<Caution at reassembling>
1) To incorporate the fan motor incorporate the
motor into the position in the following figure,
and then install the fan motor.
Remarks
Install the cross flow fan so that the right
end of the 1st joint from the right of the
cross flow fan is set keeping 5.0 mm from
closed wall of the main unit.
Holding the set screw, install the cross flow
fan so that flat area on shaft of the fan motor
comes to the mounting hole of the set screw.
W
FILE NO. SVM-10019
Perform positioning of the fan motor as
follows:
When assembling the fan motor, the fan
motor must be installed in such a way that
the fan motor leads will be taken out is
positioned at the bottom front.
After assembling the two hooking claws of
the motor band (right) into the main body,
position the fan motor, insert it, and then
secure the motor band (right) using the two
fixing screws.
Fan motor D shaft 5mm Double point set screw
100
No.
Q
Part name
Common procedure
Procedure
1) Turn the power supply off to stop the
operation of air-conditioner.
2) Remove the front panel.
Remove the 2 fixing screws.
3) Remove the electrical part base.
Remarks
Replace terminal block,
microcomputer assy and the
P.C. board assy.
12-2. Microcomputer
FILE NO. SVM-10019
101
12-3. Outdoor Unit
No.
Q
Part name
Common
procedure
Procedure
1. Detachment
NOTE
Wear gloves for this job.
Otherwise, you may injure your
hands on the parts, etc.
1) Stop operation of the air conditioner,
and turn off the main switch of the
breaker for air conditioner.
2) Remove the valve cover.
(screw 3 pcs.)
After removing screw, remove the
valve cover pulling it downward.
3) Remove cord clamp (screw 3 pcs.)
and then remove connecting
cable.
4) Remove the upper cabinet.
(screw 5 pcs.)
After removing screws, remove the
upper cabinet pulling it upward.
2. Attachment
1) Attach the upper cabinet.
Remarks
FILE NO. SVM-10019
(screw 5 pcs.)
2) Perform cabling of connecting cable,
and attach the cord clamp.
Fix the cord clamp by tightening
the screws (screw 3 pcs.)
fitting 2 concave parts of the cord
clamp to each connecting cables.
3) Attach the valve cover.
(screw 3 pcs.)
Insert the upper part into the square
hole of the side cabinet, set hook
claws of the valve cover to square
holes (at two positions) of the main
unit, and attach it pushing upward,
102
No.
R
Part name
Front cabinet
Procedure
1. Detachment
1) Perform step 1 in
Q
.
2) Remove the fixing screws (screw 2 pcs.)
used to secure the front cabinet and
inverter cover, the screws (screw 3 pcs.)
used to secure the front cabinet at the
bottom, the screw used to secure the
front and side cabinet (Right), and the
Remarks
FILE NO. SVM-10019
2. Attachment
1) Insert the claw on the front left side into
the side cabinet (left).
2) Hook the bottom part of the front right
side onto the concave section of the
bottom plate. Insert the claw of the side
cabinet (right) into the square hole in the
front cabinet.
3) Return the screws that were removed
above to their original positions and
attach them.
screws (screw 2 pcs.) used to secure
the motor base.
The front cabinet is fitted into the side
cabinet (left) at the front left side so
pull up the top of the front cabinet to
remove it.
103
No.
S
Part name
Inverter
assembly
Procedure Remarks
1) Perform work of item 1 in
Q
.
2) Remove screw (ST1T4 10L 2 pcs.) of the
upper part of the front cabinet.
If removing the inverter cover in this
condition, P.C. board can be checked.
If there is no space above the unit, perform
work of 1 in
R
.
Be careful to check the inverter because
high-voltage circuit is incorporated in it.
3) Perform discharging by connecting ,
polarity by discharging resistance (approx.
10040W) or plug of soldering iron to ,
terminals a of the C14 (printed CAUTION
HIGH VOLTAGE is attached.) electrolytic
capacitor (500F) on P.C. board.
Be careful to discharge the capacitor
because the electrolytic capacitor
cannot naturally discharge and voltage
remains according to trouble type in
some cases.
NOTE
This capacitor is one with mass capacity.
Therefore, it is dangerous that a large
spark generates if short-circuiting
between ,
Requirement
As each connector has a lock mecha-
nism, avoid to remove the connector by
holding the lead wire, but by holding the
connector.
(Discharging period
10 seconds or more)
Plug of
soldering
iron
The connector is one
with lock, so remove
it while pushing the
part indicated by an
arrow.
Be sure to remove the connector by
holding the connector, not by pulling
the lead wire.
4) Remove screw (ST1T4 x 10L 4pcs.) fixing
the terminal part of inverter box to the main
body.
5) Remove the front cabinet by performing step
1 in , and remove the fixing screws
(ST1T4 x 10L) for securing the main body
and inverter box.
6) Remove various lead wires from the holder
at upper part of the inverter box.
7) Pull the inverter box upward.
8) Disconnect connectors of various lead wires.
Inverter cover
P.C. board
(Soldered surface)
k
FILE NO. SVM-10019
104
No.
T
Part name
Control board
assembly
Procedure
1. Disconnect the leads and connectors connected to
the other parts from the control board assembly.
1) Leads
3 leads (black, white, orange) connected to
terminal block.
Lead connected to compressor :
Disconnect the connector (3P).
Lead connected to reactor :
Disconnect the two connectors (2P).
2) Connectors (8)
CN300 : Outdoor fan motor (3P: white)*
(* : See Note)
CN701 : 4-way valve (2P: yellow)*
CN600 : TE sensor (2P: white)*
CN700 : PMV (6P: white)
CN603 : TS sensor (3P: white)*
CN601 :TD sensor (3P: white)*
CN602 : TO sensor (2P: white)
NOTE
These connectors have a disconnect prevention
mechanism: as such, the lock on their housing
must be released before they are disconnected.
2. Remove the control board assembly from the P.C.
board base. (Remove the heat sink and control
board assembly while keeping them screwed
together.)
NOTE
Disengage the four claws of the P.C. board base,
hold the heat sink, and lift to remove it.
3. Remove the two fixing screws used to secure the
heat sink and control board assembly.
4. Mount the new control board assembly.
NOTE
When mounting the new control board assembly,
ensure that the P.C. board is inserted properly
into the P.C. board support groove.
Remarks
CN300, CN701, CN600 and
CN603 are connectors with
locking mechanisms: as such,
to disconnect them, they must
be pressed in the direction of
the arrow while pulling them
out.
P.C. board base
P.C. board
CN700 CN602 CN300
CN701
CN603
CN601 CN600
FILE NO. SVM-10019
105
No.
U
Part name
Side cabinet
Procedure
1. Side cabinet (right)
R
and all the steps in
S
.
2) Remove the fixing screw used to secure
the side cabinet and heat exchanger.
3) Remove the fixing screw (screw 2 pcs.)
used to secure the plate conduit and
Remarks
Detail A Detail B Detail C
1) Perform work of item 1 of
Q
and
R
.
2) Remove the flange nut fixing the fan motor
and the propeller.
Flange nut is loosened by turning clock-
wise. (To tighten the flange nut, turn
counterclockwise.)
3) Remove the propeller fan.
4) Disconnect the connector for fan motor
from the inverter.
5) Remove the fixing screws (4 pcs.) holding
by hands so that the fan motor does not
fall.
* Precautions when assembling the fan
motor
Tighten the flange nut using a tightening
torque of 3.3 lbf
.
ft (4.5 Nm).
V
Fan motor
Propeller fan
Fan motor
Flange nut
FILE NO. SVM-10019
2. Side cabinet (left)
R
.
2) Remove the fixing screw used to secure
the side cabinet (left) onto the heat
exchanger.
3) Remove the fixing screw (SCREW 2 pcs.)
used for securing the side cabinet to the
bottom plate and heat exchanger.
4) Remove the fixing screw (screw 3 pcs.)
used to secure the side cabinet to the
bottom plate and valve fixing panel.
side cabinet.
A
B
C
106
No.
W
Part name
Compressor
Procedure
Q
and
R
,
S
,
T
,
U
.
2) Extract refrigerant gas.
3) Remove the partition board.
(screw 3 pcs.)
4) Remove the sound-insulation material.
5) Remove terminal cover of the compressor,
and disconnect lead wire of the compressor
from the terminal.
6) Remove pipe connected to the compressor
with a burner.
Take care to keep the 4-way valve away
from naked flames. (Otherwise, it may
malfunction.)
7) Remove the fixing screw of the bottom plate
and heat exchanger.
8) Remove the fixing screw of the bottom plate
and valve fixing plate.
Remarks
X
Reactor 1) Perform work of item 1 of
R
, and
S
.
2) Remove screws fixing the reactors.
(screw 2 pcs.) for 09LAV
FILE NO. SVM-10019
9) Pull upward the refrigeration cycle.
10) Remove NUT (3 pcs.) fixing the compres-
sor to the bottom plate.
(screw 4 pcs.) for 12LAV
107
No.
Y
Part name
Electronic
expansion valve
coil
Procedure
Wire guard 1. Detachment

R
.
2) Remove the front cabinet, and put it down
so that wire guard side directs downward.
Perform work on a corrugated cardboard,
cloth, etc. to prevent flaw to the product.
3) Remove the guard stopper (4 pcs.) from hook
of wire guard.
4) Turn the front cabinet into opposite site then
FILE NO. SVM-10019
pull wire guard up ward.
2. Attachment
1) Insert claws (2 positions) of the wire guard
in the holes of the front cabinet. Push the
hook (4 positions) by hands and fix by
Check that all the claws & hooks are fixed
to the specified positions.
1. Detachment
R
, all the steps in
S
and 1 in
U
.
2) Remove the coil by pull it upward.
2. Attachment
1) Insert a valve coil to value body by push
it downward. And confirm to fix it surely.
Remarks
guard stopper.
108
No.
11
Part name Procedure Remarks
TE sensor (outdoor heat exchanging temperature sensor)
Attachment
Install the sensor onto the straight pipe part of the condenser
output pipe.
During the installation work (and on its completion), take care not to damage the coverings of
the sensor leads on the edges of the metal plates or other parts. It is dangerous for these
coverings to be damaged since damage may cause electric shocks and/or a fire.
CAUTION
After replacing the parts, check whether the positions where the sensors were installed are the
proper positions as instructed. The product will not be controlled properly and trouble will result
if the sensors have not been installed in their proper positions.
Detail C for 12LAV-UL Detail C for 09LAV-UL
TS sensor (Suction pipe temperature sensor)
Attachment
Install the senser onto the straight pipe part of the suction
pipe. Be careful for the lead direction of the sensor.
TD sensor (Discharge pipe temperature sensor)
Attachment
With its leads pointed upward, install the sensor onto the
vertical straight pipe part of the discharge pipe.
TO sensor (Outside air temperature sensor)
Attachment
Insert the outdoor air temperature sensor into the holder, and
install the holder onto the heat exchanger.
12
13
14
CAUTION
FILE NO. SVM-10019
Detail A for 09,12LAV-UL
TD sensor
TO sensor
109
13. EXPLODED VIEWS AND PARTS LIST
13-1. Indoor Unit (E-Part)
FILE NO. SVM-10019
Location Part Location Part
No. No. No. No.
401 43T50326 TEMPERATURESENSOR 405 43T69641 PCBOARDASSY;WRS-LED
402 43T60401 TERMINALBLOCK:3P (RAS-09LKV-UL)
403 43T50325 TEMPERATURESENSOR 406 43T69854 PCBOARD(RAS-09LKV-UL)
404 43T62003 CORDCLAMP 406 43T69855 PCBOARD(RAS-12LKV-UL)
405 43T69633 PCBOARDASSY;WRS-LED
(RAS-12LKV-UL)
Description Description
FILE NO. SVM-10019
110
13-2. Indoor Unit
No. No. No. No.
201 43T21397 LOUVERMOTOR 215 43T39328 MOTORBAND(LEFT)
202 43T21409 FANMOTOR(RAS-09LKV-UL) 216 43T39329 MOTORBAND(RIGHT)
202 43T21421 FANMOTOR(RAS-12LKV-UL) 217 43T09409 HORIZONTALLOUVER
203 43T22312 BEARINGASSY,MOLD 218 43T79313 CAP,DRAIN
204 43T70313 HOSE,DRAIN 219 43T44446 REFRIGERANTCYCLEASSEMBLY
205 43T20325 CROSSFLOWFANASSEMBLY 221 43T00488 PANELSERVICEASSEMBLY
206 43T11317 PIPESHIELD 222 43T80318 AIRFILTER(R)
207 43T83003 HOLDER,REMOTECONTROL 223 43T80319 AIRFILTER(L)
208 43T60382 MOTORCORD 224 43T09457 GRILLEOFAIRINLET
209 43T82310 INSTALLATIONPLATE 226 43T62328 TERMINALCOVER
211 43T19333 HOLDER,SENSOR 227 43T66308 REMOTECONTROLLERWIRELESS
212 43T09408 PIPEHOLDER 229 43T82311 PARTITIONCONDUIT
213 43T03378 BACKBODYASSEMBLY 230 43T82312 MOUNTCONDUIT
214 43T39338 BEARINGBASE
111
13-3. Outdoor Unit (RAS-09LAV-UL)
FILE NO. SVM-10019
No. No. No. No.
1 43T00535 FRONTCABINET 18 43T46351 REACTOR
2 43T00459 LEFTCABINET 21 43T20319 PROPELLERFAN
3 43T42327 BASEPLATEASSEMBLY 22 43T21419 FAN-MOTOR
4 43T00452 UPPERCABINET 23 43T47001 NUTFLANGE
5 43T19342 WIREGUARD 24 43T97001 NUT
6 43T00540 PACKEDVALVECOVER 25 43T49335 RUBBERCUSHION
8 43T41420 COMPRESSOR(MadeinChina) 26 43T46359 4WAYVALVE
9 43T43446 CONDENSERASSEMBLY 27 43T63324 4WAYVALVECOILASSEMBLY
10 43T46332 VALVE;PACKED6.35DIA 28 43T63319 HOLDER,SENSOR
11 43T46331 VALVE;PACKED9.52DIA 30 43T39337 MOTORBASECONNECTIONPLATE
12 43T47331 BONNET,6.35DIA 31 43T63318 HOLDER,SENSOR
14 43T00539 FIXINGPLATEVALVE 33 43T63316 HOLDER,SENSOR
15 43T00537 RIGHTCABINETASSEMBLY 34 43T19331 FINGUARD
16 43T46360 BODYPMV 35 43T49338 FUSIBLEPLUG
17 43T63325 COILPMV 36 43T63330 PRESSURESWITCH
112
13-4. Outdoor Unit (RAS-12LAV-UL)
FILE NO. SVM-10019
No. No. No. No.
1 43T00535 FRONTCABINET 18 43T58306 REACTOR
2 43T00459 LEFTCABINET 21 43T20319 PROPELLERFAN
3 43T42327 BASEPLATEASSEMBLY 22 43T21419 FAN-MOTOR
4 43T00452 UPPERCABINET 23 43T47001 NUTFLANGE
5 43T19342 WIREGUARD 24 43T97001 NUT
6 43T00540 PACKEDVALVECOVER 25 43T49335 RUBBERCUSHION
8 43T41431 COMPRESSOR 26 43T46359 4WAYVALVE
9 43T43447 CONDENSERASSEMBLY 27 43T63324 4WAYVALVECOILASSEMBLY
10 43T46332 VALVE;PACKED6.35DIA 28 43T63319 HOLDER,SENSOR
11 43T46331 VALVE;PACKED9.52DIA 30 43T39337 MOTORBASECONNECTIONPLATE
14 43T00539 FIXINGPLATEVALVE 33 43T63316 HOLDER,SENSOR
15 43T00537 RIGHTCABINETASSEMBLY 34 43T19331 FINGUARD
16 43T46360 BODYPMV 35 43T49338 FUSIBLEPLUG
17 43T63325 COILPMV 36 43T63330 PRESSURESWITCH
113
13-5. P.C. Board Layout
FILE NO. SVM-10019
No. No. No. No.
701 43T62320 HEATSINK 705 43T50328 TEMPERATURESENSOR
702 43T69847 PCBOARD(RAS-09LAV-UL) 707 43T62313 BASE-PLATE-PC
702 43T69848 PCBOARD(RAS-12LAV-UL) 708 43T50329 SENSOR,HEATEXCHANGER
703 43T60404 TERMINAL-5P 709 43T50330 SENSOR,HEATEXCHANGER
704 43T60403 FUSE 710 43T50331 SENSOR,HEATEXCHANGER
56
FILE NO. SVM-03005
T O S H I B A C A R R I E R ( T H A I L A N D ) C O . , LT D .
144/ 9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI,
AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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R410A

FILE NO. SVM-10019

until the [QUIET] button is pressed once

The unit starts to operate. The green indicator is on.

The unit stops operating. The green indicator is turned off.

The unit starts to operate. The green indicator is on.

The unit stops operating. The green indicator is turned off.

10-1-2. Optional installation parts

), drill the pipe hole 2-9/16 in.

10-6-2. Power supply Connection and Connecting

10 to 20 when the multimeter probe

FILE NO. SVM-10019

Wire guard 1. Detachment

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