FTKS-RL - RKS-RL (09,12) - Service Manual - EN

Service Manual
Models: FTKS09RL216/RKS09RL216
FTKS12RL216/RKS12RL216
(Refrigerant:R410A)
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

Service Manual
Table of Contents
Part Ⅰ : Technical Information........................................................................1

1. Summary.......................................................................................................................1
2. Specifications...........................................................................................................2
2.1 Specification Sheet............................................................................................................2
2.2 Operation Characteristic Curve.........................................................................................4
2.3 Capacity Variation Ratio According to Temperature..........................................................4
2.4 Cooling and Heating Data Sheet in Rated Frequency......................................................5
2.5 Noise Curve.......................................................................................................................5
3. Outline Dimension Diagram.........................................................................6
3.1 Indoor Unit.........................................................................................................................6
3.2 Outdoor Unit......................................................................................................................7
4. Refrigerant System Diagram.......................................................................8
5. Electrical Part...........................................................................................................9
5.1 Wiring Diagram..................................................................................................................9
5.2 PCB Printed Diagram...................................................................................................... 11
6. Function and Control.......................................................................................13
6.1 Remote Controller Introduction ......................................................................................13
6.2 Brief Description of Modes and Functions.......................................................................16
Part Ⅱ : Installation and Maintenance ..................................................25

7. Notes for Installation and Maintenance...........................................25
8. Installation.................................................................................................................27
8.1 Installation Dimension Diagram.......................................................................................27
8.2 Installation Parts-checking .............................................................................................29
8.3 Selection of Installation Location.....................................................................................29
8.4 Electric Connection Requirement....................................................................................29
8.5 Installation of Indoor Unit.................................................................................................29
8.6 Installation of Outdoor Unit..............................................................................................32
8.7 Vacuum Pumping and Leak Detection............................................................................33
8.8 Check after Installation and Test Operation....................................................................33
Table of Contents
Service Manual
9. Maintenance.............................................................................................................34
9.1 Error Code List................................................................................................................34
9.2 Procedure of Troubleshooting.........................................................................................35
9.3 Troubleshooting for Normal Malfunction..........................................................................48
10. Exploded View and Parts List...............................................................50
10.1 Indoor Unit.....................................................................................................................50
10.2 Outdoor Unit..................................................................................................................52
11. Removal Procedure........................................................................................54
11.1 Removal Procedure of Indoor Unit................................................................................54
11.2 Removal Procedure of Outdoor Unit.............................................................................59
Appendix:.........................................................................................................................64
Appendix 1: Reference Sheet of Celsius and Fahrenheit.....................................................64
Appendix 2: Configuration of Connection Pipe......................................................................64
Appendix 3: Pipe Expanding Method....................................................................................65
Appendix 4: List of Resistance for Temperature Sensor.......................................................66
Table of Contents
Service Manual
Part Ⅰ : Technical Information

1. Summary
Indoor Unit
FTKS09RL216
FTKS12RL216
Outdoor Unit
RKS09RL216
RKS12RL216
Remote Controller
YU1F
Technical Information 1
Service Manual
2. Specifications
2.1 Specification Sheet
Parameter Unit Value Value

Model FTKS09RL216/RKS09RL216 FTKS12RL216/RKS12RL216
Product Code CB426001900_L40890 CB426002100_L40890
Rated Voltage V～ 208/230 208/230
Power
Rated Frequency Hz 60 60
Supply
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity(Min~Max) W 2638(910~2814) 3517(1100~3664)
Heating Capacity(Min~Max) W / /
Cooling Power Input(Min~Max) W 822(375~1300) 1095(410~1350)
Heating Power Input(Min~Max) W / /
Cooling Current Input A 3.6 4.9
Heating Current Input A / /
Rated Input W 1300 1350
Rated Current A 5.8 6.0
Air Flow Volume(SH/H/M//L/SL) m3/h 540/490/410/290/- 680/490/410/330/-
Dehumidifying Volume L/h 0.80 1.40
EER W/W 3.21 3.21
COP W/W / /
SEER W/W / /
HSPF W/W / /
Application Area m2 12-18 16-24
Indoor Unit Model FTKS09RL216 FTKS12RL216
Indoor Unit Product Code CB426N01900_L40890 CB426N02100_L40890
Fan Type Cross-flow Cross-flow
Fan Diameter Length(DXL) mm Ф98X580 Ф98X633.5
Cooling Speed(SH/H/M//L/SL) r/min 1350/1200/1050/750/- 1350/1200/1000/800/-
Heating Speed(SH/H/M//L/SL) r/min / /
Fan Motor Power Output W 20 20
Fan Motor RLA A 0.215 0.21
Fan Motor Capacitor μF 1 1.5
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Ф5 Ф5
Indoor
Evaporator Row-fin Gap mm 2-1.4 2-1.4
Unit
Evaporator Coil Length (LXDXW) mm 584X22.8X266.7 635X22.8X306.3
Swing Motor Model MP24AA MP24BA
Swing Motor Power Output W 1.5 1.5
Fuse Current A 3.15 3.15
Sound Pressure Level(SH/H/M//L/SL) dB (A) 40/36/32/24/- 42/39/33/26/-
Sound Power Level(SH/H/M//L/SL) dB (A) 50/46/42/34/- 52/49/43/36/-
Dimension (WXHXD) mm 790X275X200 845X289X209
Dimension of Carton Box (LXWXH) mm 863X268X352 918X278X364
Dimension of Package(LXWXH) mm 867X271X367 921X281X379
Net Weight kg 9 10.5
Gross Weight kg 11 13
2 Technical Information
Service Manual
Outdoor Unit Model RKS09RL216 RKS12RL216

Outdoor Unit Product Code CB427W03200_L40890 CB427W03000_L40890
ZHUHAI GREE DAIKIN DEVICE ZHUHAI GREE DAIKIN DEVICE
Compressor Manufacturer
CO.,LTD CO.,LTD
Compressor Model 1GDY23AXD 1GDY23AXD
Compressor Oil DAPHNE FVC50K DAPHNE FVC50K
Compressor Type Swing Swing
Compressor LRA. A 16.5 16.5
Compressor RLA A 4.00 4.00
Compressor Power Input W 845 845
Compressor Overload Protector KSD115ºC or HPC115/95 KSD115ºC or HPC115/95
Throttling Method Capillary Capillary
Set Temperature Range ºC 16~30 16~30
Cooling Operation Ambient Temperature
ºC -18~46 -18~46
Range
Heating Operation Ambient Temperature
ºC / /
Range
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7 Φ7
Condenser Rows-fin Gap mm 1-1.4 2-1.4
Condenser Coil Length (LXDXW) mm 710X19.05X508 710X38.1X508
Fan Motor Speed rpm 820 820
Outdoor Fan Motor Power Output W 30 30
Unit
Fan Motor RLA A 0.36 0.36
Fan Motor Capacitor μF 2.5 2.5
Outdoor Unit Air Flow Volume m3/h 1600 1600
Fan Type Axial-flow Axial-flow
Fan Diameter mm Ф400 Ф400
Defrosting Method / /
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IP24
Permissible Excessive Operating Pressure
MPa 4.3 4.3
for the Discharge Side
Permissible Excessive Operating Pressure
MPa 2.5 2.5
for the Suction Side
Sound Pressure Level (H/M/L) dB (A) 52/-/- 53/-/-
Sound Power Level (H/M/L) dB (A) 62/-/- 63/-/-
Dimension(WXHXD) mm 776X540X320 776X540X320
Dimension of Carton Box (LXWXH) mm 848X360X580 848X360X580
Dimension of Package(LXWXH) mm 851X363X595 851X363X595
Net Weight kg 29 31
Gross Weight kg 31.5 33.5
Refrigerant R410A R410A
Refrigerant Charge kg 0.7 0.85
Connection Pipe Length m 5 5
Connection Pipe Gas Additional Charge g/m 15 20
Outer Diameter Liquid Pipe mm Ф6 Ф6
Connection
Outer Diameter Gas Pipe mm Ф9.52 Ф9.52
Pipe
Max Distance Height m 10 10
Max Distance Length m 15 15
Note: The connection pipe applies metric diameter.
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Service Manual
2.2 Operation Characteristic Curve

Cooling
10 8
9
7
8
6
7
5
6
Current(A)
Current(A)
5 4
4
3
Condition Conditio
3
Indoor:DB 27°C WB19°C Indoor:D
Indoor air flow: Super High 2 Indoor a
2 Pipe length:5m Pipe leng
Voltage:230V Voltage:
1
1
0 0
0 20 40 60 80 100 120 0 20 40 60 8
Compressor Speed(rps) Compressor Sp
11 11
2.3 Capacity Variation Ratio According to Temperature
220V 220V
10 10
Conditions
Cooling
9 Indoor: DB27°C/WB19°C 9
8 Outdoor: DB35°C/WB24°C 8
Indoor air flow: High
7 110Pipe length: 5m 7
Current (A)
Current (A)
120
6 230V 6
5 5
4 100 100 4
3 3
240V
2 2
1 90 80 1
0 0
Capacity ratio(%)
0 10 20 30 40 50 60 70 80 90 0 10 20 30 40 50 6
Capacity ratio(%)
80 60
Compressor speed (rps) Compressor
70 40
Condition
Indoor:DB20°C
Condition Indoor air flow: Super
60 20 Pipe length:5m
Indoor:DB 27°C WB19°C
Indoor air flow: Super High
Pipe length:5m
50 0
32 33 34 35 36 37 38 39 40 41 42 43 -15 -10 -5 0
Outdoor temp. (°C) Outdoor temp. (°C)
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency

Cooling:
Rated cooling Pressure of gas pipe Inlet and outlet pipe
Compressor
condition(°C) connecting indoor and temperature of heat Fan speed of Fan speed of
Model frequency
(DB/WB) outdoor unit exchanger indoor unit outdoor unit
(Hz)
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
FTKS09RL216/
52
RKS09RL216
27/19 35/24 0.9 to 1.1 12 to 14 75 to 37 Super High High
FTKS12RL216/
72
RKS12RL216
Instruction:
T1: Inlet and outlet pipe temperature of evaporator
T2: Inlet and outlet pipe temperature of condenser
P: Pressure at the side of big valve
Connection pipe length: 5m.
2.5 Noise Curve
Indoor side noise Outdoor side noise
60 70
65
50 60
Noise dB(A)
55
40 50
45
30
40
35
20
Low Middle High Super High 30
20 30 40 50 60 70 80 90
Indoor fan motor rotating speed Compressor frequency(Hz)
Service Manual
3. Outline Dimension Diagram

3.1 Indoor Unit
W D
168.5 462 159.5

FTKS09RL216
Φ55 Φ55
54 54
150 90
131 542 172
FTKS12RL216
Ф55 Ф55
43 43
143 80
Unit:mm
Model W H D
FTKS09RL216 790 275 200
FTKS12RL216 845 289 209
Service Manual
3.2 Outdoor Unit
714 257
540
320 776
286
510
Unit:mm
Service Manual
4. Refrigerant System Diagram

Cooling model
Indoor unit Outdoor unit
Gas pipe
side
Valve
Discharge
Heat
exchanger
(evaporator) Suction Accumlator
Compressor Heat
exchanger
(condenser)
Liquid pipe
side
Valve
Capillary Strainer
COOLING
Connection pipe specification:

Liquid pipe:1/4" (6mm)
Gas pipe:3/8" (9.52mm)
Service Manual
5. Electrical Part
5.1 Wiring Diagram
● Instruction
Symbol Symbol Color Symbol Symbol Color Symbol Name

WH White GN Green CAP Jumper cap
YE Yellow BN Brown COMP Compressor
RD Red BU Blue Grounding wire
YEGN Yellow/Green BK Black / /
VT Violet OG Orange / /
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.
● Indoor Unit
TEMP.SENSOR
TEMP.SENSOR
WIRED
CONTROLLER
AP3
RECEIVER AND
ROOM
TUBE
DISPLAY BOARD
θ θ
AP1
CONNECTOR
RT1 RT2 TERMINAL
BLOCK
OUTDOOR UNIT
BU WH(BU)
N1 N(1)
T-SENSOR DISP1 DISP2 COM-MANUAL BK BK
COM-OUT 2
CAP BN RD(BN)
AP2: MAIN BOARD AC-L 3
JUMP YEGN GN(YEGN)
PGF PG SWING-UD XT1
YEGN
M2 EVAPORATOR G
M1
FAN STEPPING ELECTRIC BOX G
MOTOR MOTOR
Service Manual
● Outdoor Unit
WARNING OUTTUBE OUTROOM EXHAUST REACTOR

Please don't touch any TEMP. TEMP. TEMP.
terminal when the machine is SENSOR SENSOR SENSOR L
WH OG
running ,stopping or has been
powered off for less than 30 θ θ θ MAGNETIC L2 L2
minutes to prevent the risk RT1 RT2 RT3 RING
of electric shock ! (20k) (15k) (50k)
MAGNETIC LX1-1 LX1-2
XT RING
CN2
INDOOR UNIT
WH(BU) BU L1
L1 N(1) N
BK L1
BK
RD(BN)
2
L1
COMU AP:Main Board
BN
L2 3 AC-L
GN(YEGN) YEGN YEGN
PE OVC-COMP OFAN
U V W
TERMINAL
WH(BU) BLOCK BU YE RD
L1 NOTE: Motor
X1 ground only
L2 BK(BN)
GN(YEGN)
MAGNETIC RD RD
M YEGN applies to the
RING
L3
G iron shell motor.
POWER BU YE RD G
SAT FAN MOTOR
ELECTRICAL BOX V
U W
G COMP
YEGN
YEGN
OVERLOARD
G
PROTECTOR
MID.ISOLATION COMP.
SHEET G
These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
Service Manual
5.2 PCB Printed Diagram

Indoor Unit
● Top view
1 2 3 4 12 5 6
1 Neutral wire
2 Control interface of PG motor
3 Jumper interface
4 temperature sensor
Interface of up and down swing
5
terminal
6 Feedback interface of indoor fan
7 Wired Controller
7
8 Interface of display
Interface of indoor unit and outdoor
11 9
unit communication
10 live wire
11 Fuse
10 12 Auto button
9
● Bottom view
Service Manual
Outdoor Unit
● Top view
12 11
1 PFC induction wire

2 Terminal of compressor wire
10 3 temperature sensor
1 Terminal of compressor overload
4
protection
Communication wire with indoor
5
unit
6 Power supply neutral wire
7 Power supply live wire
8 Earthing wire
Terminal of electronic expansion
9
valve
10 Terminal of 4-way valve
9 11 Terminal of chassis electric heating
12 Terminal of outdoor fan
3 4 5 6 7
● Bottom view
Service Manual
6. Function and Control

6.1 Remote Controller Introduction
Buttons on Remote Controller
1 ON/OFF button
2 TURBO button
3 MODE button
4 FAN button
2 1
5 +/- button
3 4
6 SWING button
5
7 6 7 SAVE button
8 8 SLEEP button
9 TIMER button
9 11
10 10 LIGHE button
11 X-FAN button
Introduction for Icons on Display Screen
Dry mode Lock
Auto mode Send signal
Cool mode
Heat mode Set temperature

Fan mode
Turbo mode X-fan
Auto swing
Timer
Sleep mode
Set fan speed
Introduction for Buttons on Remote Controller
Service Manual
Service Manual
Service Manual
6.2 Brief Description of Modes and Functions

● Indoor Unit
1. Basic function of system
(1) Cooling mode
(1) Under this mode, fan and swing operates at setting status. Temperature setting range is 16~30OC.
(2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status.
(2) Drying mode
(1) Under this mode, fan operates at low speed and swing operates at setting status. Temperature setting range is 16~30OC.
(2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status.
(3) Protection status is same as that under cooling mode.
(4) Sleep function is not available for drying mode.
(3) Heating mode
(1) Under this mode, Temperature setting range is 16~30OC.
(2) Working condition and process for heating mode:
When turn on the unit under heating mode, indoor unit enters into cold air prevention status. When the unit is stopped or at OFF status,
and indoor unit has been started up just now, the unit enters into residual heat-blowing status.
(4) Working method for AUTO mode:
1.Working condition and process for AUTO mode:
a.Under AUTO mode, standard heating Tpreset=20OC and standard cooling Tpreset=25OC. The unit will switch mode automatically
according to ambient temperature.
2.Protection function
a. During cooling operation, protection function is same as that under cooling mode.
b. During heating operation, protection function is same as that under heating mode.
3. Display: Set temperature is the set value under each condition. Ambient temperature is (Tamb.-Tcompensation) for heat pump unit
and Tamb. for cooling only unit.
4. If theres I feel function, Tcompensation is 0. Others are same as above.
(5) Fan mode
Under this mode, indoor fan operates at set fan speed. Compressor, outdoor fan, 4-way valve and electric heating tube stop operation.
Indoor fan can select to operate at high, medium, low or auto fan speed. Temperature setting range is 16~30OC.
2. Other control
(1) Buzzer
Upon energization or availably operating the unit or remote controller, the buzzer will give out a beep.
(2) Auto button
If press this auto button when turning off the unit, the complete unit will operate at auto mode. Indoor fan operates at auto fan speed
and swing function is turned on. Press this auto button at ON status to turn off the unit.
(3) Auto fan
Heating mode: During auto heating mode or normal heating ode, auto fan speed will adjust the fan speed automatically according to
ambient temperature and set temperature.
(4) Sleep
After setting sleep function for a period of time, system will adjust set temperature automatically.
(5) Timer function:
General timer and clock timer functions are compatible by equipping remote controller with different functions.
(6) Memory function
memorize compensation temperature, off-peak energization value.
Memory content: mode, up&down swing, light, set temperature, set fan speed, general timer (clock timer cant be memorized).
After power recovery, the unit will be turned on automatically according to memory content.
(7) Health function(Only applicable for some models)
During operation of indoor fan, set health function by remote controller. Turn off the unit will also turn off health function.
Turn on the unit by pressing auto button, and the health is defaulted ON.
Service Manual
(8) I feel control mode

After controller received I feel control signal and ambient temperature sent by remote controller, controller will work according to the ambient
temperature sent by remote controller.
(9) Compulsory defrosting function
(1) Start up compulsory defrosting function
Under ON status, set heating mode with remote controller and adjust the temperature to 16℃ . Press “+, -, +, -, +,-” button successively
within 5s and the complete unit will enter into compulsory defrosting status. Meanwhile, heating indicator on indoor unit will ON 10s and OFF
0.5s successively. (Note: If complete unit has malfunction or stops operation due to protection, compulsory defrosting function can be started
up after malfunction or protection is resumed.
(2) Exit compulsory defrosting mode
After compulsory defrosting is started up, the complete unit will exit defrosting operation according to the actual defrosting result, and the
complete unit will resume normal heating operation.
(10) Refrigerant recovery function:
(1) Enter refrigerant recycling function
Within 5min after energizing (unit ON or OFF status is ok), continuously press LIGHT button for 3 times within 3s to enter refrigerant
recycling mode; Fo is displayed and refrigerant recycling function is started. At this moment, the maintenance people closes liquid valve.
After 5min, stick the thimble of maintenance valve with a tool. If there is no refrigerant spraying out, close the gas valve immediately and
then turn off the unit to remove the connection pipe.
(2) Exit refrigerant recycling function
After entering refrigerant recycling mode, when receive any remote control signal or enter refrigerant recycling mode for 25min, the unit will
exit refrigerant recycling mode automatically If the unit is in standby mode before refrigerant recycling, it will be still in standby mode after
finishing refrigerant recycling; if the unit is in ON status before refrigerant recycling, it will still run in original operation mode.
(11) Ambient temperature display control mode
1. When user set the remote controller to display set temperature (corresponding remote control code: 01), current set temperature will be
displayed.
2. Only when remote control signal is switched to indoor ambient temperature display status (corresponding remote control code: 10) from
other display status (corresponding remote control code: 00, 01,11),controller will display indoor ambient temperature for 3s and then turn
back to display set temperature.
Under this mode, indoor fan operates at set fan speed. Compressor, outdoor fan, 4-way valve and electric heating tube stop operation.
Indoor fan can select to operate at high, medium, low or auto fan speed. Temperature setting range is 16~30OC.
(12) Off-peak energization function:
Adjust compressors minimum stop time. The original minimum stop time is 180s and then we change to:
The time interval between two start-ups of compressor cant be less than 180+T s(0≤T≤15). T is the variable of controller. Thats to say
the minimum stop time of compressor is 180s~195s. Read-in T into memory chip when refurbish the memory chip each time. After power
recovery, compressor can only be started up after 180+T s at least.
(13) SE control mode
The unit operates at SE status.
(14) X-fan mode
When X-fan function is turned on, after turn off the unit, indoor fan will still operate at low speed for 2min and then the complete unit will be
turned off. When x-fan function is turned off, after turn off the unit, the complete unit will be turned off directly.
(15) 8º heating function
Under heating mode, you can set 8º heating function by remote controller. The system will operate at 8ºset temperature.
(16) Turbo function
This function can be set in cooling or heating mode, but not in auto, drying or fan mode. Press fan button to cancel this function.
Service Manual
● Outdoor Unit
1. Input Parameter Compensation and Calibration
(1) Check the ambient temperature compensation function Indoor ambient temperature compensation function.
a. In cooling mode, the indoor ambient temperature participating in computing control = (Tindoor ambient temperature – ⊿ Tcooling indoor ambient temperature
compensation)
b. In heating mode, the indoor ambient temperature participating in computing control= (Tindoor ambient temperature – ⊿ Theating indoor ambient temperature
compensation)
(2) Check effective judgment controls of parameters

Effective judgment function of the outdoor exhaust temperature thermo-bulb When conditions a and b are satisfied, the outdoor exhaust
temperature thermo-bulb is judged not to be connected into place, the mainboard of outer units will display failure of the outdoor exhaust
temperature thermo-bulb (not connected into place), stop the machine for repairing, and resume the machine by remote controls of ON/
OFF.
a. Judgment of exhaust detection temperature change:
After the compressor starts up and runs for 10 minutes, if the compressor frequency f ≥ 40Hz, and the rising value Texhaust (Texhaust (after start-
up for 10 minutes) - Texhaust (before start-up)) < 2ºC , the outdoor exhaust temperature thermo-bulb can be judged not to be connected into place (judging
once when the power is on the first time).

b. Comparative judgment of exhaust detection temperature and condenser detection temperature (Tpipe temperature = Toutdoor pipe temperature in cooling
mode, Tpipe temperature = Tindoor pipe temperature in heating mode): After the compressor starts up and runs for 10 minutes, if the compressor frequency f ≥
40Hz, and Tpipe temperature ≥(Texhaust+3 ), the outdoor exhaust temperature thermobulb can be judged not to be connected into place (judging
once when power is on the first time).
2. Basic Functions
(1) Cooling Mode
1. Conditions and processes of cooling operation:
(1) If the compressor is shut down, and [Tsetup – (Tindoor ambient temperature – ⊿ Tcooling indoor ambient temperature compensation)] ≤ 0.5 , start up the machine
for cooling, the cooling operation will start;
(2) During operations of cooling, if 0ºC ≤ [Tsetup – (Tindoor ambient temperature – ⊿ Tcooling indoor ambient temperature compensation)] < 2 , the cooling operation
will be still running;
(3) During operations of cooling, if 2ºC ≤ [Tsetup – (Tindoor ambient temperature – ⊿ Tcooling indoor ambient temperature compensation)], the cooling operation will
stop after reaching the temperature point.
2. Temperature setting range
(1) If Toutdoor ambient temperature ≥ [Tlow-temperature cooling temperature], the temperature can be set at: 16~30ºC (Cooling at room temperature);
(2) If Toutdoor ambient temperature < [Tlow-temperature cooling temperature], the temperature can be set at: 25~30ºC (Cooling at low temperature), that is, the
minimum setting temperature for outer units judgment is 25ºC .
(2) Dehumidifying Mode
1. Conditions and processes of dehumidifying operations: Same as the cooling mode;
2. The temperature setting range is: 16~30ºC ;
(3) Air-supplying Mode
1. The compressor, outdoor fans and four-way valves are switched off;
2. The temperature setting range is: 16~30ºC.
(4) Heating Mode
1. Conditions and processes of heating operations: (Tindoor ambient temperature is the actual detection temperature of indoor environment
thermo-bulb, Theating indoor ambient temperature compensation is the indoor ambient temperature compensation during heating
operations)
(1) If the compressor is shut down, and [(Tindoor ambient temperature – ⊿ Theating indoor ambient temperature compensation) –Tsetup] ≤ 0.5 , start the machine to
enter into heating operations for heating;
(2) During operations of heating, if 0ºC ≤ [(Tindoor ambient temperature – ⊿ Theating indoor ambient temperature compensation) –Tsetup] < 2 , the heating operation
will be still running;
(3) During operations of heating, if 2ºC ≤ [(Tindoor ambient temperature – ⊿ Theating indoor ambient temperature compensation) –Tsetup], the heating operation will
stop after reaching the temperature point.
2. The temperature setting range in this mode is: 16~30ºC .
18 Installation and Maintenance

Service Manual
3. Special Functions
Defrosting Control
① Conditions for starting defrosting
After the time for defrosting is judged to be satisfied, if the temperature for defrosting is satisfied after detections for continuous 3minutes,
the defrosting operation will start.
② Conditions of finishing defrosting
The defrosting operation can exit when any of the conditions below is satisfied:
③ Toutdoor pipe temperature ≥ (Toutdoor ambient temperature – [Ttemperature 1 of finishing defrosting];
④ The continuous running time of defrosting reaches [tmax. defrosting time].
4. Control Logic
(1) Compressor Control
Start the compressor after starting cooling, heating, dehumidifying operations, and the outer fans start for 5s; When the machine is
shutdown, in safety stops and when switching to air-supplying mode, the compressor will stop immediately. In all modes: once the
compressor starts up, it will not be allowed to stop until having run for the [tmin. compressor running time] (Note: including cases of
shutdown when the temperature point is reached; except the cases requiring stopping the compressor such as fault protection, remote
shutdown, mode switching etc.); In all modes: once the compressor stops, it will be allowed be restart after 3-minute delay (Note: The
indoor units have a function of power memory, the machine can be restarted after remote shutdown and powering up again without
delay).
1. Cooling mode
Start the machine to enter into cooling operation for cooling, the compressor is switched on.
2. Dehumidifying mode
Same as the cooling mode.
3. Air-supplying mode
The compressor is switched off.
4. Heating mode
(1) Start the machine to enter into heating operation for heating, the compressor is switched on.
(2) Defrosting:
a. Defrosting starts: the compressor is shut down, and restarts it after 55-second delay.
b. Defrosting ends: the compressor stops, then starts it after 55-second delay.
(2) Outer Fans Control
Notes:
Only the outer fans run for at least 80s in each air flow speed can the air flow be switched;
After the outer fans run compulsively in high speed for 80s when the machine starts up, control the air flow according to the logic.
After remote shutdown, safety stops, and when the machine stops after reaching the temperature point, as well as after the compressor
stops, extend 1 minute, the outer fans will stop (During the period in the 1 minute, the air flow of outer fans can be changed according to
the outdoor ambient temperature changes); When running with force, the outdoor fans shall run in the highest air flow.
(3) 4-way valve control
1. The 4-way valve control under the modes of Cooling, dehumidification and supplying air: closing;
2. The status of 4-way valve control under the heating mode: getting power;
(1) 4-way valve power control under heating mode
a. Starts the machine under heating mode, the 4-way valve will get power immediately.
(2) 4-way valve power turn-off control under heating mode
a. When you should turn off the power or switch to other mode under heating mode, the power of 4-way valve will be cut after 2 minutes
of the compressor stopped.
b. When all kinds of protection stops, the power of 4-way valve will be cut after delaying 4 minutes.
(3) Defrosting control under heating mode:
a. Defrosting begins: The power of 4-way valve will be cut after 50s of entering into the defrosting
compressor.
b. Defrosting stops: The 4-way valve will get power after 50s of exiting the defrosting compressor.
(4) Evaporator frozen-preventing protection function
At the mode of Cooling, dehumidifying:
Evaporator frozen-preventing protection function is allowed to begin after 6 min of starting the compressor.
Installation and Maintenance 19

Service Manual
1. Starting estimation:
After the compressor stopped working for 180s, if Tinner pipe> [Tfrozen-preventing frequency-limited temperature (the temperature of hysteresis is 2 )], the
machine is only allowed to start for operating, otherwise it should not be started, and should be stopped to treat according to the frozen-
preventing protection: Clear the trouble under the mode of power turn-off / heating, and the protection times are not counted.
2. Frequency limited
[Tfrozen-preventing normal speed frequency-reducing temperature] ≤[Tinner pipe T frozen-preventing frequency-limited temperature] , you should limit the frequency raising of
compressor.
3. Reducing frequency at normal speed:
If [Tfrozen-preventing high speed frequency-reducing temperature] ≤[Tinner pipe T frozen-preventing normal speed frequency-reducing temperature], you should adjust the compressor
frequency by reducing 8Hz/90s till the lower limit;
4. Reducing frequency at high speed:
If [Tfrozen-preventing power turn-off temperature] ≤T inner pipe [Tfrozen-preventing high speed frequency-reducing temperature] you should adjust the compressor frequency by
reducing 30Hz/90s till the lower limit;
5. Power turn-off:
If the Tinner pipe <[Tfrozen-preventing power turn-off temperature], then frozen-preventing protect to stop the machine; If T[frozen-preventing frequency-limited temperature]
<Tinner pipe , and the compressor has stopped working for 3 minutes, the whole machine should be allowed to operate.
6. If the frozen-preventing protection power turn-off continuously occurs for six times, it should not be resumed automatically, and you should
press the ON/OFF button to resume if the fault keeps on. During the process of running, if the running time of compressor exceeds the t
evaporator frozen-preventing protection times zero clearing time , the times of frozen-preventing power turn-off should be cleared to recount.
The mode of stopping the machine or transferring to supply air will clear the trouble times immediately (if the trouble can not be resumed,
mode transferring will not clear it).
(5) Overload protection function
Overload protection function at the mode of Cooling and dehumidifying
After the compressor stopped working for 180s, if Touter pipe <[TCooling overload frequency-limited temperature] (the temperature of hysteresis is 2ºC ), the
machine is allowed to start, otherwise it should not be started, and should be stopped to treat according to the overload protection: Clear the
trouble at the mode of power turn-off / heating, and the protection times are not counted.
If [TCooling overload frequency-limited temperature] ≤[Touter pipe T Cooling overload frequency reducing temperature at normal speed], you should limit the frequency raising of
compressor.
3. Reducing frequency at normal speed and power turn-off:
If [TCooling overload frequency reducing temperature at high speed] ≤T outer pipe< [TCooling overload power turn-off temperature] , you should adjust the compressor frequency
by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if [TCooling overload frequency reducing temperature at normal speed]≤Touter pipe,
then Cooling overload protects machine stopping;
4. Reducing frequency at high speed and stop machine:
If [TCooling overload frequency reducing temperature at high speed]≤Touter pipe [TCooling overload power turn-off temperature], you should adjust the compressor frequency by
reducing 30Hz/90s till the lower limit; After it was running 90s at the lower limit, if [TCooling overload frequency reducing temperature at normal speed] ≤[T outer pipe],
then Cooling overload protects machine stopping;
5. Power turn-off:
If the [TCooling overload power turn-off temperature] ≤Touter pipe, then Cooling overload protects machine stopping; If [Touter pipe]<[TCooling overload frequency-limited
temperature]and the compressor has been stopped working for 3 minutes, the machine should be allowed to operate.
6. If the Cooling overload protection power turn-off continuously occurs for six times, it should not be resumed automatically, and you should
press the ON/OFF button to resume if the fault keeps on. During the process of running, if the running time of compressor exceeds the t
overload protection times zero clearing time , the times of overload protection power turn-off should be cleared to recount. The mode of
stopping the machine or transferring to supply air will clear the trouble times immediately (if the trouble can not be resumed, transferring
mode will not clear it).
Overload protection function at the mode of heating
Starting estimation :
After the compressor stopped working for 180s, if T inner pipe T heating overload frequency-limited temperature (the temperature of
hysteresis is 2 ), the machine is allowed to start, otherwise it should not be started, and should be stopped to treat according to the overload
protection:
Clear the trouble at the mode of power turn-off / heating, and the protection times are not counted.

Service Manual
If [Theating overload frequency-limited temperature]≤Tinner pipe <[Theating overload frequency reducing temperature at normal speed] , you should limit the frequency raising of
compressor.
2. Reducing frequency at normal speed and stopping machine:
If T[heating overload frequency reducing temperature at normal speed]≤Tinner pipe<[Theating overload frequency reducing temperature at high speed], you should adjust the compressor
frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if T heating overload frequency reducing
temperature at normal speed ≤T inner pipe, then overload protects machine stopping;
3. Reducing frequency at high speed and power turn-off:
If [Theating overload frequency reducing temperature at high speed]≤Tinner pipe<[Theating overload power turn-off temperature], you should adjust the compressor frequency by
reducing 30Hz/90s till the lower limit; After it was running 90s at the lower limit, if T heating overload frequency reducing temperature at normal
speed ≤T outer pipe, then Cooling overload protects machine stopping;
4. Power turn-off:
If the [Theating overload power turn-off temperature] ≤Tinner pipe, then overload protects machine stopping; If T inner pipe T heating overload frequency-limited
temperature and the compressor has been stopped working for 3 minutes, the machine should be allowed to operate.
5. If the overload protection power turn-off continuously occurs for six times, it should not be resumed automatically, and you should press
the ON/OFF button to resume if the fault keeps on. During the process of running, if the running time of compressor exceeds the t overload
protection times zero clearing time , the times of overload protection power turn-off should be cleared to recount. The mode of stopping the
machine or transferring to supply air will clear the trouble times immediately (if the trouble can not be resumed, transferring mode will not clear
it). Protective function for discharge temperature of compressor
After the compressor stopped working for 180s, if TDischarge <TDischarge limited temperature (the temperature of hysteresis is 2ºC ), the machine is
allowed to start, otherwise it should not be started, and should be stopped to treat according to the discharge temperature:
The machine should be stopped or transferred to supply air, the trouble should be cleared immediately, and the protection times are not
counted.
If [TLimited frequency temperature during discharging] ≤TDischarge<[Tfrequency reducing temperature at normal speed during discharging] , you should limit the frequency raising of
compressor.
3. Reducing frequency at normal speed and stopping machine:
If [Tfrequency reducing temperature at normal speed during discharging] ≤TDischarge<[Tfrequency reducing temperature at high speed during discharging], you should adjust the compressor
frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if [Tfrequency reducing temperature at normal speed during discharging]
≤TDischarge, you should discharge to protect machine stopping;
If [Tfrequency reducing temperature at high speed during discharging] ≤TDischarge <[TStop temperature during discharging], you should adjust
the compressor frequency by reducing 30Hz/90s till the lower limit; After it was running 90s at the lower limit, if [Tfrequency reducing temperature at normal
speed during discharging] ≤TDischarge, you should discharge to protect machine stopping;
5. Power turn-off:
If the [TPower turn-off temperature during discharging] ≤TDischarge, you should discharge to protect machine stopping; If [TDischarge]<[TLimited frequency temperature during
discharging] and the compressor has been stopped for 3 minutes, the machine should be allowed to operate.
6. If the discharging temperature protection of compressor continuously occurs for six times, it should not be resumed automatically, and you
should press the ON/OFF button to resume. During the process of running, if the running time of compressor exceeds the t Protection times
clearing of discharge , the discharge protection is cleared to recount. Stopped or transferred to supply air mode will clear the trouble times
immediately (if the trouble can not be resumed, mode transferring also will not clear it).
If [ILimited frequency when overcurrent] ≤IAC Electric current <[I frequency reducing when overcurrent], you should limit the frequency raising of compressor.
8. Reducing frequency:
If [IFrequency reducing when overcurrent] ≤[IAC Electric current I Power turn-off when overcurrent] , you should reduce the compressor frequency till the lower limit or exit
the frequency reducing condition;
9. Power turn-off:
If [IPower turn-off machine when overcurrent] ≤[IAC Electric current] , you should carry out the overcurrent stopping protection; If I AC Electric current<[T Limited frequency when
overcurrent] and the compressor has been stopped for 3 minutes, the machine should be allowed to operate.
10. If the overcurrent protection continuously occurs for six times, it should not be resumed automatically, and you should press the ON/OFF
button to resume. During the process of running, if the running time of compressor exceeds the [t Protection times clearing of over current] , the discharge
protection is cleared to recount.

Service Manual
(6) Voltage sag protection

After start the compressor, if the time of DC link Voltage sag [USagging protection voltage] is measured to be less than t Voltage sag protection time ,
the machine should be stop at once, hand on the voltage sag trouble, reboot automatically after 30 minutes.
(7) Communication fault
When you have not received any correct signal from the inner machine in three minutes, the machine will stop for communication fault. When
you have not received any correct signal from driver IC (aim to the controller for the separating of main control IC and driver IC), and the
machine will stop for communication fault. If the communication is resumed, the machine will be allowed to operate.
(8) Module protection
Testing the module protective signal immediately after started, once the module protective signal is measured, stop the machine with module
protection immediately. If the module protection is resumed, the machine will be allowed to operate. If the module protection continuously
occurs for three times, it should not be resumed automatically, and you should press the ON/OFF button to resume. If the running time of
compressor exceeds the [t Protection times clearing of module] , the module protection is cleared to recount.
(9) Module overheating protection
After the compressor stopped working for 180s, if TModule<[TModule frequency limited temperature](the temperature of hysteresis is 2 ), the machine is allowed
to start, otherwise it should not be started, and should be stopped to treat according to the module overheating protection: The machine
should be stopped or transferred to supply air, the trouble should be cleared immediately, and the protection times are not counted.
If [TLimited frequency temperature of module] ≤TModule <[Tfrequency reducing temperature at normal speed of module] , you should limit the frequency raising of compressor.
3. Reducing frequency at normal speed and power turn-off:
If [Tfrequency reducing temperature at normal speed of module] ≤TModule<[Tfrequency reducing temperature at high speed of module], you should adjust the compressor frequency by
reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if [T frequency reducing temperature at normal speed of module] ≤T Module, you should
stop the machine for module overheating protection;
If [Tfrequency reducing temperature at high speed of module]≤TModule <[TPower turn-off temperature of module] you should adjust the compressor frequency by reducing 30Hz/90s
till the lower limit; After it was running 90s at the lower limit, if [T frequency reducing temperature at normal speed of module] ≤T Module, you should stop the machine for
module overheating protection;
5. Power turn-off:
If the [TPower turn-off temperature of module] ≤TModule, you should stop the machine for module overheating protection; If TModule <[TLimited frequency temperature of module]
and the compressor has been stopped for 3 minutes, the machine should be allowed to operate.
6. If protection continuously occurs for six times, it should not be resumed automatically, and you should press the ON/OFF button to resume.
During the process of running, if the running time of compressor exceeds the [t Protection times clearing of module] , the discharge protection is cleared
to recount. Stopped or transferred to supply air mode will clear the trouble times immediately (if the trouble can not be resumed, mode
transferring also will not clear it).
(10)Compressor overloads protection
If you measure the compressor overload switch action in 3s, the compressor should be stopped for overloading. The machine should be
allowed to operate after overload protection was measured to resume. If the overloading protection continuously occurs for three times, it
should not be resumed automatically, and you should press the ON/OFF button to resume. The protection times of compressor is allowed to
clear after the compressor run [t Protection times clearing of compressor overloading] 30 minutes.
(11)Phase current overcurrent protection of compressor
During the running process of compressor, you could measure the phase current of the compressor, and control it according to the following
steps:
If [I Limited frequency phase current] ≤[I Phase current T frequency reducing phase current] , you should limit the frequency raising of compressor.
2. Reducing Frequency
If [I Frequency Reducing Phase Current]≤I Phase Current<[I Power Turn-Off Phase Current], the compressor shall continue to reduce frequency till the lowest frequency
limit or out of the condition of reducing frequency;
3. Power turn-off
If [I ]≥[I Power Turn-Off Phase Current], the compressor phase current shall stop working for overcurrent protection; if [I Phase Current]≤[I Frequency Reducing
Phase Current
Phase Current], and the compressor have stopped working for 3 min, the machine shall be allowed to operate;
4. If the overcurrent protection of compressor phase current continuously occurs for six times, it should not be resumed automatically, and
you should press the ON/OFF button to resume. During the process of running, if the running time of compressor exceeds the [t Clearing Time of
Compressor Phase Current Times] , the overcurrent protection is cleared to recount.

Service Manual
(12) Starting-up Failure Protection for Compressor

Stop the compressor after its starting-up fails, restart it after 20s if the fault doesnt shows, and if they are all failing for the successive start 3
times, it shall be reported as Starting-up Failure, and then restart up it after 3 min. When it still not be able to operate through carry out the
above process for 5 times, it is available if press ON/OFF. And the compressor should be cleared the times after it run 2 min.
(13) Out-of-Step Protection for Compressor
The out-of-step protection signal should be detected immediately after starting-up compressor, and once find the out-of-step protection signal,
the out-of-step protection shall be stopped; if it can run for lasting power turn-off 3 min, the machine shall be allowed to operate. If it still cant
run automatically when the out-of-step protection for compressor happens to stop working for 6 times in succession, it needs to press ON/OFF
to operate. And if the running time is more than 10 min, the power turn-off times for out-of-step protection shall be cleared and recounted.
(14) Voltage Abnormity Protection for DC Bus
To detect voltage abnormity protection for dc bus after completing the pre-charge:
1. Over-High Voltage Protection for DC Bus:
If it found the DCbus voltage UDC >[UDC Jiekuangchun Protection], turn off PFC and stop the compressor at once, and it shall show the DC over-high
voltage failure; it should clear out the failure when the voltage dropped to UDC <[UDC Jiekuangchun Recovery] and the compressor stopped for 3 min.
2. Over-Low Voltage Protection for DC Bus:
If it found the DC bus voltage UDC <[UDC Wantuochun Protection], turn off PFC and stop the compressor at once, and it shall show the DC over-low
voltage; and it should clear out the failure when the voltage raised to UDC >[UDC Wantuochun Recovery] and the compressor stopped for 3 min.
3. To detect voltage abnormity protect for DC bus when getting electricity:
If it found the DC bus voltage UDC >[UDC——Over-High Voltage], turn off the relay at once, and shows voltage abnormity failure for DC Bus. And the
failure cant recover except to break off and get the electricity.
(15) Abnormity Protection for Four-way Valve
Under the model of heating operation in good condition: the compressor is detected [TInner Tube <(TInner Ring-T Abnormity Temperature Difference For Four-Way Valve
Reversion)], during the running, it should be regarded as four-way valve reversion abnormity. And then it can run if stop the reversion abnormity
protection for four-way valve 3 min; and if it still cant run when the reversion abnormity protection for four-way valve happens to stop working
for 3 times in succession, it is available if presses ON/OFF.
Attention: the protection shall be shielded during the testing mode and defrosting process, and it shall be cleared out the failure and its times
immediately when turning off or delivering wind / cooling / dehumidifying mode conversed (the inverted mode dont clear out the failure when it
cant recover to operate).
(16) PFC Protection
1. After start up the PFC, it should detect the protection signal of PFC immediately; under the condition of PFC protection, it should turn off the
PFC and compressor at one time;
2. It shows the failure is cleared out if PFC Protection stopped working 3 min and recovers to run automatically;
3. If it still cant run when it occurs PFC protection for 3 times in succession, it is available if presses ON/OFF; and clear the PFC Protection
times when start up PFC for 10min.
(17) Failure Detection for Sensor
1. Outdoor Ambient Sensor: detect the failure of sensor at all times.
2. Outdoor Tube Sensor: You should not detect the failure of outdoor tube sensor within 10 minutes heating
operation compressor except the defrosting, and you could detect it at other time.
3. Outdoor Exhaust Sensor:
(a) The compressor only detect the sensor failure after it start up 3 min in normal mode;
(b) It should detect the exhaust sensor failure immediately in the testing mode.
4. Module Temperature Sensor:
(a) Short-Circuit Detection: the compressor should be detected immediately when the module temperature
sensor occurs short-circuits;
(b) Open-Circuit Detection: the compressor should be detected on open-circuit when it runs 3min (it neednt 30s
avoiding the module over-heated).
(c) Detect the sensor failure at all times in the testing mode.
5. Disposal for Sensor Protection
(1) When the short-circuit of sensor is detected within 30s, It is regarded as the temperature of sensor over-high (or infinitely high), and now
according to the over-high sensor, the machine should carry out the corresponding protection to stop working, and show the corresponding
temperature shutdown protection and sensor failure at the same time (for example: the compressor stops immediately when the outdoor tube
sensor short-circuit, and the machine shall show the overload protection and outdoor tube sensor failure).
(2) When the open-circuit of sensor is detected within 30s, The protection shall be stopped and it shall show the corresponding sensor failure.

Service Manual
6. Electric Heating Function of Chassis

(1) When Toutdoor amb.≤0 , the electric heating of chassis will operate;
(2) When Toutdoor amb.>2 , the electric heating of chassis will stop operation;
(3)When 0 <Toutdoor amb.≤2 , the electric heating of chassis will keep original status.
7. Electric Heating Function of Compressor
(1) When Toutdoor amb.≤≤-5 , compressor stops operation, while the electric heating of compressor starts operation;
(2) When Toutdoor amb.>-2 , the electric heating of compressor stops operation;
(3) When -5 <Toutdoor amb.≤-2 , the electric heating of compressor will keep original status.

Service Manual
Part Ⅱ : Installation and Maintenance

7. Notes for Installation and Maintenance
Safety Precautions: 10. If the power cord or connection wire is not long enough,
please get the specialized power cord or connection wire
Important! from the manufacture or distributor. Prohibit prolong the wire
by yourself.
Please read the safety precautions carefully before 11. For the air conditioner without plug, an air switch must
installation and maintenance. be installed in the circuit. The air switch should be all-pole
The following contents are very important for installation parting and the contact parting distance should be more than
and maintenance. 3mm.
12. Make sure all wires and pipes are connected properly and
Please follow the instructions below. the valves are opened before energizing.
13. Check if there is electric leakage on the unit body. If yes,
●The installation or maintenance must accord with the please eliminate the electric leakage.
instructions. 14. Replace the fuse with a new one of the same specification
●Comply with all national electrical codes and local if it is burnt down; dont replace it with a cooper wire or
electrical codes. conducting wire.
●Pay attention to the warnings and cautions in this 15. If the unit is to be installed in a humid place, the circuit
manual. breaker must be installed.
●All installation and maintenance shall be performed by
distributor or qualified person.
●All electric work must be performed by a licensed Installation Safety Precautions:
technician according to local regulations and the
instructions given in this manual. 1. Select the installation location according to the require-
●Be caution during installation and maintenance. Prohibit ment of this manual.(See the requirements in installation
incorrect operation to prevent electric shock, casualty and part)
other accidents. 2. Handle unit transportation with care; the unit should not
be carried by only one person if it is more than 20kg.
3. When installing the indoor unit and outdoor unit, a suffi-
Warnings
cient fixing bolt must be installed; make sure the installation
support is firm.
4. Ware safety belt if the height of working is above 2m.
5. Use equipped components or appointed components dur-
ing installation.
Electrical Safety Precautions: 6. Make sure no foreign objects are left in the unit after fin-
ishing installation.
1. Cut off the power supply of air conditioner before
checking and maintenance. Refrigerant Safety Precautions:
2. The air condition must apply specialized circuit and
prohibit share the same circuit with other appliances. 1. Avoid contact between refrigerant and fire as it generates
3. The air conditioner should be installed in suitable poisonous gas; Prohibit prolong the connection pipe by
location and ensure the power plug is touchable. welding.
4. Make sure each wiring terminal is connected firmly 2. Apply specified refrigerant only. Never have it mixed with
during installation and maintenance. any other refrigerant. Never have air remain in the refrigerant
5. Have the unit adequately grounded. The grounding line as it may lead to rupture or other hazards.
wire cant be used for other purposes. 3. Make sure no refrigerant gas is leaking out when
6. Must apply protective accessories such as protective installation is completed.
boards, cable-cross loop and wire clip. 4. If there is refrigerant leakage, please take sufficient
7. The live wire, neutral wire and grounding wire of measure to minimize the density of refrigerant.
power supply must be corresponding to the live wire, 5. Never touch the refrigerant piping or compressor without
neutral wire and grounding wire of the air conditioner. wearing glove to avoid scald or frostbite.
8. The power cord and power connection wires cant be
pressed by hard objects. Improper installation may lead to fire hazard, explosion,
9. If power cord or connection wire is broken, it must be electric shock or injury.
replaced by a qualified person.

Service Manual
Main Tools for Installation and Maintenance

1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill
4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner

hexagon spanner
7. Electronic leakage detector 8. Vacuum pump 9. Pressure meter
10. Pipe pliers, pipe cutter 11. Pipe expander, pipe bender 12. Soldering appliance, refrigerant container

Service Manual
8. Installation
8.1 Installation Dimension Diagram
Space to the ceiling
At least 15cm Space to the wall
At least 15cm
At least 15cm
Space to the wall
m
0c
t 30 At least 250cm
le as on
At u cti
str
ob
he
tot
ace
Sp
Space to the obstruction
the
e to n
At least 50cm
ac ctio
Sp stru
ob t
l e as
At cm
30
At least 30cm Drainage pipe
Space to th
e wall
on At least 50cm
u cti 0cm
str 20
ob as
t Space to the ob
he le struction
ot At
c et
S pa

Service Manual
Start installation
Preparation before installation
Read the requirements select installation Prepare tools

for electric connection location
Select indoor unit Select outdoor unit

installation location installation location
Install wall-mounting Install the support of outdoor unit

frame, drill wall holes (select it according to the actual situation)
Connect pipes of indoor Fix outdoor unit

unit and drainage pipe
Connect wires of indoor unit Install drainage joint of outdoor unit

(only for cooling and heating unit)
Bind up pipes and

hang the indoor unit
Make the bound pipes pass

through the wall hole and then
connect outdoor unit
Connect pipes of outdoor unit
Connect wires of outdoor unit
Neaten the pipes
Vacuum pumping and leakage detection
Check after installation and test operation
Finish installation
Note: this flow is only for reference; please find the more detailed installation steps in this section.

Service Manual
8.2 Installation Parts-checking 8.4 Electric Connection Requirement

1. Safety Precaution
No. Name No. Name
(1) Must follow the electric safety regulations when installing
1 Indoor unit 8 Sealing gum
the unit.
2 Outdoor unit 9 Wrapping tape
(2) According to the local safety regulations, use qualified
Support of outdoor
3 Connection pipe 10 power supply circuit and air switch.
unit
(3) Make sure the power supply matches with the requirement
4 Drainage pipe 11 Fixing screw
of air conditioner. Unstable power supply or incorrect wiring
Wall-mounting Drainage plug(cooling
5 12 may result in electric shock,fire hazard or malfunction. Please
frame and heating unit)
install proper power supply cables before using the air
Connecting Owners manual,
6 13 conditioner.
cable(power cord) remote controller
7 Wall pipe Air-conditioner Air switch capacity
FTKS09RL216/RKS09RL216 10A
Note:
FTKS12RL216/RKS12RL216 16A
1. Please contact the local agent for installation.
2. Dont use unqualified power cord. (4) Properly connect the live wire, neutral wire and grounding
wire of power socket.
(5) Be sure to cut off the power supply before proceeding any
8.3 Selection of Installation Location work related to electricity and safety.
(6) Do not put through the power before finishing installation.
1. Basic Requirement:
(7) For appliances with type Y attachment,the instructions
Installing the unit in the following places may cause
shall contain the substance of thefollowing.If the supply cord is
malfunction. If it is unavoidable, please consult the local dealer:
damaged,it must be replaced by the manufacturer,its service
(1) The place with strong heat sources, vapors, flammable or
agent or similarly qualified persons in order to avoid a hazard.
explosive gas, or volatile objects spread in the air.
(8) The temperature of refrigerant circuit will be high, please
(2) The place with high-frequency devices (such as welding
keep the interconnection cable away from the copper tube.
machine, medical equipment).
(9) The appliance shall be installed in accordance with national
(3) The place near coast area.
wiring regulations.
(4) The place with oil or fumes in the air.
(5) The place with sulfureted gas. 2. Grounding Requirement:
(6) Other places with special circumstances. (1) The air conditioner is first class electric appliance. It must
(7) The appliance shall nost be installed in the laundry. be properly grounding with specialized grounding device
by a professional. Please make sure it is always grounded
effectively, otherwise it may cause electric shock.
2. Indoor Unit:
(2) The yellow-green wire in air conditioner is grounding wire,
(1) There should be no obstruction near air inlet and air outlet.
which cant be used for other purposes.
(2) Select a location where the condensation water can be
(3) The grounding resistance should comply with national
dispersed easily andwont affect other people.
electric safety regulations.
(3) Select a location which is convenient to connect the
(4) The appliance must be positioned so that the plug is
outdoor unit and near the power socket.
accessible.
(4) Select a location which is out of reach for children.
(5) An all-pole disconnection switch having a contact separation
(5) The location should be able to withstand the weight of
of at least 3mm in all poles should be connected in fixed wiring.
indoor unit and wont increase noise and vibration.
(6) Including an air switch with suitable capacity, please note
(6) The appliance must be installed 2.5m above floor.
the following table. Air switch should be included magnet
(7) Dont install the indoor unit right above the electric
buckle and heating buckle function, it can protect the circuit-
appliance.
short and overload. (Caution: please do not use the fuse only
(8) Please try your best to keep way from fluorescent lamp.
for protect the circuit)
3. Outdoor Unit:
(1) Select a location where the noise and outflow air emitted by
the outdoor unit will not affect neighborhood. 8.5 Installation of Indoor Unit
(2) The location should be well ventilated and dry, in which 1. Choosing Installation Iocation
the outdoor unit wont be exposed directly to sunlight or strong Recommend the installation location to the client and then
wind. confirm it with the client.
(3) The location should be able to withstand the weight of
2. Install Wall-mounting Frame
outdoor unit.
(1) Hang the wall-mounting frame on the wall; adjust it in
(4) Make sure that the installation follows the requirement of
horizontal position with the level meter and then point out the
installation dimension diagram.
screw fixing holes on the wall.
(5) Select a location which is out of reach for children and far
(2) Drill the screw fixing holes on the wall with impact drill (the
away from animals or plants.If it is unavoidable, please add
specification of drill head should be the same as the plastic
fence for safety purpose.
expansion particle) and then fill the plastic expansion particles

Service Manual
in the holes. 5. Connect the Pipe of Indoor Unit

(3) Fix the wall-mounting frame on the wall with tapping screws (1) Aim the pipe joint at the corresponding bellmouth.(As show
(ST4.2X25TA) and then check if the frame is firmly installed by in Fig.5)
pulling the frame. If the plastic expansion particle is loose, (2) Pretightening the union nut with hand.
please drill another fixing hole nearby. (3) Adjust the torque force by referring to the following sheet.
Place the open-end wrench on the pipe joint and place the
3. Install Wall-mounting Frame
torque wrench on the union nut. Tighten the union nut with
(1) Choose the position of piping hole according to the direction
torque wrench.(As show in Fig.6)
of outlet pipe. The position of piping hole should be a little
(4) Wrap the indoor pipe and joint of connection pipe with
lower than the wall-mounted frame.(As show in Fig.1)
insulating pipe, and then wrap it with tape.(As show in Fig.7)
Wall Wall
Mark in the middle of it Level meter
Space Space Open-end
wrench
to the to the
wall wall Union nut
above above Pipe joint Union nut Pipe
Torque wrench Pipe
150mm 150mm
Left Right
Φ55mm Φ55mm
Fig.5 Indoor pipe Fig.6
Rear piping hole Rear piping hole
Fig.1
(2) Open a piping hole with the diameter of Φ55mm on the

selected outlet pipe position.In order to drain smoothly, slant Insulating pipe Fig.7
the piping hole on the wall slightly downward to the outdoor
side with the gradient of 5-10°.(As show in Fig.2) Refer to the following table for wrench moment of force:
Indoor Outdoor
Hex nut diameter(mm) Tightening torque(N.m)
Φ6 15~20
Φ9.52 30~40
Φ55mm Φ12 45~55
5-10° Φ16 60~65
Φ19 70~75
Fig.2
Note: 6. Install Drain Hose
(1) Pay attention to dust prevention and take relevant safety (1) Connect the drain hose to the outlet pipe of indoor unit.(As
measures when opening the hole. show in Fig.8)
(2) The plastic expansion particles are not provided and should (2) Bind the joint with tape.(As show in Fig.9)
be bought locally.
4. Outlet Pipe
Drain hose
(1) The pipe can be led out in the direction of right, rear right, Outlet pipe
left or rear left.(As show in Fig.3)
(2) When selecting leading out the pipe from left or right, please
cut off the corresponding hole on the bottom case.(As show in Tape
Fig.4) Outlet Drain hose
pipe Fig.9
Fig.8
Note:
(1) Add insulating pipe in the indoor drain hose in order to
Left Rear left prevent condensation.
Rear right
(2) The plastic expansion particles are not provided.
Fig.3 Right (As show in Fig.10)
Left Right Drain hose
Insulating pipe
Fig.10
Cut off Fig.4
the hole

Service Manual
7. Connect Wire of Indoor Unit 8. Bind Up Pipe

(1) Open the panel, remove the screw on the wiring cover and (1) Bind up the connection pipe, power cord and drain hose
then take down the cover.(As show in Fig.11) with the band.(As show in Fig.14)
(2) Reserve a certain length of drain hose and power cord
Panel Screw for installation when binding them. When binding to a certain
degree, separate the indoor power and then separate the drain
hose.(As show in Fig.15)
(3) Bind them evenly.
(4) The liquid pipe and gas pipe should be bound separately at
Fig.11 the end.
Wiring cover
Indoor and
(2) Make the power connection wire go through the cable-cross outdoor power cord
Indoor unit Gas
hole at the back of indoor unit and then pull it out from the front pipe
side.(As show in Fig.12)
Liquid
Band pipe
Drain hose
Cable-cross Fig.14
hole Drain hose
Connection pipe Band
Power connection Fig.12

wire
Indoor power cord

(3) Remove the wire clip; connect the power connection wire
Fig.15
to the wiring terminal according to the color; tighten the screw
and then fix the power connection wire with wire clip.(As show
Note:
in Fig.13)
(1) The power cord and control wire cant be crossed or
winding.
(2) The drain hose should be bound at the bottom.
N(1) 2 3
green 9. Hang the Indoor Unit
white black red
(blue) (brown) (yellow-
green) (1) Put the bound pipes in the wall pipe and then make them
pass through the wall hole.
(2) Hang the indoor unit on the wall-mounting frame.
Outdoor unit connection (3) Stuff the gap between pipes and wall hole with sealing gum.
(4) Fix the wall pipe.(As show in Fig.16)
(5) Check if the indoor unit is installed firmly and closed to the
Fig.13
wall.(As show in Fig.17)
Note:the wiring board is for reference only,
please refer to the actual one.
Indoor Outdoor Upper hook
(4) Put wiring cover back and then tighten the screw. Wall pipe
(5) Close the panel. Sealing gum
Note:
(1) All wires of indoor unit and outdoor unit should be Lower hook of
connected by a professional. wall-mounting frame
(2) If the length of power connection wire is insufficient, please Fig.16 Fig.17
contact the supplier for a new one. Avoid extending the wire by
yourself.
(3) For the air conditioner with plug, the plug should be Note:
reachable after finishing installation. Do not bend the drain hose too excessively in order to prevent
(4) For the air conditioner without plug, an air switch must be blocking.
installed in the line. The air switch should be all-pole parting
and the contact parting distance should be more than 3mm.

Service Manual
8.6 Installation of Outdoor Unit Refer to the following table for wrench moment of force:
1. Fix the Support of Outdoor Unit(Select it according to Hex nut diameter(mm) Tightening torque(N.m)
the actual installation situation) Φ6 15~20
(1) Select installation location according to the house structure. Φ9.52 30~40
(2) Fix the support of outdoor unit on the selected location with Φ12 45~55
expansion screws. Φ16 60~65
Φ19 70~75
Note:
(1) Take sufficient protective measures when installing the
5. Connect Outdoor Electric Wire
outdoor unit.
(1) Remove the wire clip; connect the power connection wire
(2) Make sure the support can withstand at least four times the
and power cord to the wiring terminal according to the color ; fix
unit weight.
them with screws.(As show in Fig.23)
(3) The outdoor unit should be installed at least 3cm above the
floor in order to install drain joint.(As show in Fig.18) (2) Fix the power connection wire and power cord with wire clip.
(4) For the unit with cooling capacity of 2300W~5000W, 6
expansion screws are needed; for the unit with cooling capacity
of 6000W~8000W, 8 expansion screws are needed; for the N(1) 2 3
unit with cooling capacity of 10000W~16000W, 10 expansion L1 L2 green
screws are needed. ( yellow- green)

black(brown)
L2
white(blue)
L1
white red
black
(brown)
green POWER
(blue)
( yellow- green)
Indoor unit connection

Fig.23
Drain vent Chassis
Outdoor drain joint
Drain hose
At least 3cm above the floor Note:the wiring board is for reference only,
Fig.18 Fig.19 please refer to the actual one.
2. Install Drain Joint(Only for cooling and heating unit)
(1) Connect the outdoor drain joint into the hole on the chassis.
Note:
(2) Connect the drain hose into the drain vent.
(As show in Fig.19) (1) After tightening the screw, pull the power cord slightly to
check if it is firm.
3. Fix Outdoor Unit (2) Never cut the power connection wire to prolong or shorten
(1) Place the outdoor unit on the support. the distance.
(2) Fix the foot holes of outdoor unit with bolts.
(As show in Fig.20)
6. Neaten the Pipes
Foot holes (1) The pipes should be placed along the wall, bent reasonably
and hidden possibly. Min. semidiameter of bending the pipe is
Screw
10cm.
(2) If the outdoor unit is higher than the wall hole, you must set
a U-shaped curve in the pipe before pipe goes into the room,
in order to prevent rain from getting into the room.(As show in
Foot holes Fig.21 Handle Fig.24)
Fig.20
4. Connect Indoor and Outdoor Pipes
The drain hos
(1) Remove the screw on the right handle of outdoor unit and can't raise
then remove the handle.(As show in Fig.21) upwards
(2) Remove the screw cap of valve and aim the pipe joint at the
bellmouth of pipe.(As show in Fig.22) Wall
Fig.25
Liquid pipe Pipe joint
U-shaped curve
Liquid gas pipe
valve
Drain hose
Union nut Fig.24
gas valve
Fig.22
(3) Pretightening the union nut with hand.

(4) Tighten the union nut with torque wrench .

Service Manual
Note: 2. Leakage Detection

(1) The through-wall height of drain hose shouldnt be higher (1) With leakage detector:
than the outlet pipe hole of indoor unit.(As show in Fig.25) Check if there is leakage with leakage detector.
(2) Slant the drain hose slightly downwards. The drain hose (2) With soap water:
cant be curved, raised and fluctuant, etc.(As show in Fig.26) If leakage detector is not available, please use soap water for
(3) The water outlet cant be placed in water in order to drain leakage detection. Apply soap water at the suspected position
smoothly.(As show in Fig.27) and keep the soap water for more than 3min. If there are air
bubbles coming out of this position, theres a leakage.
8.8 Check after Installation and Test

Operation
The drain hose can't be fluctuant 1. Check after Installation
Check according to the following requirement after finishing
installation.
The water outlet
can't be placed No. Items to be checked Possible malfunction
The drain hose in water
can't be fluctuant Has the unit been The unit may drop, shake or
The water 1
outlet can't be installed firmly? emit noise.
fluctuant Fig.27
Have you done the It may cause insufficient cooling
2
refrigerant leakage test? (heating) capacity.
Fig.26
Is heat insulation of It may cause condensation and
3
pipeline sufficient? water dripping.
It may cause condensation and
4 Is water drained well?
8.7 Vacuum Pumping and Leak water dripping.
Is the voltage of power
Detection supply according to the It may cause malfunction or
5
voltage marked on the damage the parts.
1. Use Vacuum Pump nameplate?
(1) Remove the valve caps on the liquid valve and gas valve Is electric wiring and
It may cause malfunction or
and the nut of refrigerant charging vent. 6 pipeline installed
damage the parts.
(2) Connect the charging hose of piezometer to the refrigerant correctly?
charging vent of gas valve and then connect the other charging Is the unit grounded
7 It may cause electric leakage.
hose to the vacuum pump. securely?
(3) Open the piezometer completely and operate for 10-15min Does the power cord It may cause malfunction or
8
to check if the pressure of piezometer remains in -0.1MPa. follow the specification? damage the parts.
(4) Close the vacuum pump and maintain this status for 1-2min Is there any obstruction It may cause insufficient cooling
9
to check if the pressure of piezometer remains in -0.1MPa. If in air inlet and air outlet? (heating).
the pressure decreases, there may be leakage. The dust and
(5) Remove the piezometer, open the valve core of liquid valve sundries caused It may cause malfunction or
10
and gas valve completely with inner hexagon spanner. during installation are damaging the parts.
(6) Tighten the screw caps of valves and refrigerant charging removed?
vent.(As show in Fig.28) The gas valve and liquid
It may cause insufficient cooling
11 valve of connection pipe
(heating) capacity.
Liquid valve Piezometer
are open completely?
Lo Hi
Gas valve
Refrigerant charging Valve cap 2. Test Operation
vent (1) Preparation of test operation
Nut of refrigerant ● The client approves the air conditioner installation.
Charging vent ● Specify the important notes for air conditioner to the client.
Vacuum pump (2) Method of test operation
● Put through the power, press ON/OFF button on the remote
Inner hexagon controller to start operation.
spanner ● Press MODE button to select AUTO, COOL, DRY, FAN and
HEAT to check whether the operation is normal or not.
Close ● If the ambient temperature is lower than 16℃ , the air
Open conditioner cant start cooling.
Fig.28

Service Manual
9. Maintenance
9.1 Error Code List
Display of lamp
(the times of blinking)
Display of
Name of malfunction Indoor Outdoor
indoor unit
R C H Y R G
Anti-freezing protection E2 2 3
Block or Low pressure of refrigerant system E3 3 9
Compressor exhaust high temperature protection E4 4 7
AC over-current protection E5 5 5
Communication failure between indoor unit and outdoor unit E6 6 O/U
E8 8 6
Anti-high temperature protection
H4 4 6
No feedback of indoor fan motor H6 11
Jumper cap malfunction protection C5 15
Indoor unit and outdoor unit doesn't match LP 19 16
Outdoor DC fan motor malfunction L3 23 14
Power protection L9 20 9
Gathering refrigerant Fo 1 1
Indoor ambient sensor open or short circuit F1 1
Indoor tube sensor open or short circuit F2 2
Outdoor ambient sensor open or short circuit F3 3 6
Outdoor tube sensor open or short circuit F4 4 5
Exhaust sensor open or short circuit F5 5 7
Overload limit / drop frequency F6 6 3
Over current limit / drop frequency F8 8 1
High exhaust temperature limit / drop frequency F9 9 2
Refrigerant leakage protection F0 10 9
Anti-freezing limit / drop frequency FH 2 2 4
Defrosting H1 1 2
Compressor overload protection H3 3 8
IPM protection H5 5 4
Module temperature is too high H5 5 10
PFC protection HC 6 14
Loading EEPROM malfunction EE 15 11
High PN voltage protection PH 11 13
Low PN voltage protection PL 21 12
4-way valve reversal abnormal U7 20
DRED1 / DRED2 / DRED3 d1/d2/d3
Compressor Min frequence in test state P0
Compressor rated frequence in test state P1
Compressor maximum frequence in test state P2
Compressor intermediate frequence in test state P3
Compressor is running(normal) 1
The temperature for turning on the unit is reached(normal) 8
Frequency limiting (module temperature ) EU 6 6 11
Frequency limiting (power) LU 24 13
Notes: R(Indoor)--Running C--Cooling H--Heating Y--Yellow R(Outdoor)--Red G--Green

O/U--OFF or Unblink The display difference between Fo and F0 is 'o' is the bottom part of figure 8

Service Manual
9.2 Procedure of Troubleshooting

Indoor unit
1. Malfunction of Temperature Sensor F1, F2
Main detection points:
● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted?
● Is there short circuit due to trip-over of the parts?
● Is the temperature sensor broken?
● Is mainboard broken?
Malfunction diagnosis process: Start
Is the wiring terminal between the

temperature sensor and the controller Yes
loosened or poorly contacted?
Insert the temperature

sensor tightly
No
No Is malfunction
eliminated
Is there short circuit due to trip- Yes

over of the parts
Make the parts upright
No
No Is malfunction Yes
eliminated
Is the temperature sensor normal No Yes

according to the resistance table?
Replace it with a
temperature sensor with
the same model
Yes
No Is malfunction
eliminated
Replace the mainboard with

the same model.
Yes
End

Service Manual
2. Malfunction of Blocked Protection of IDU Fan Motor H6

● SmoothlyIs the control terminal of PG motor connected tightly?
● SmoothlyIs the feedback interface of PG motor connected tightly?
● The fan motor cant operate?
● The motor is broken?
● Detectioncircuit of the mainboard is defined abnormal?
Malfunction diagnosis process:
Start
While power is off stir the blade

No
with a tool to see whether the
blade rotates smoothly
Tighten the screw; reassemble the blade, motor
and shaft bearing rubber base sub-assy to make
sure there is no foreign object between them
Yes
eliminated
Check if the connection of PG No

motor feedback terminal is firm
Insert the control terminal
of PG motor tightly
Yes
eliminated
Check if the connection of PG No

motor control terminal is firm
Reinstall the blade

and motor correctly
Yes
eliminated
Turn on the unit again; measure

whether the output voltage on Yes
control terminal for PG motor is Yes
more than 50V within 1 min after
the louvers are opened
Yes Is the motor started up
No
Measure the voltage of this foot to
neutral wire on the mainboard Replace PG motor
No
eliminated
Replace the mainboard

with the same model
End

Service Manual
3. Malfunction of Protection of Jumper Cap C5

● Is there jumper cap on the mainboard?
● Is the jumper cap inserted correctly and tightly?
● The jumper is broken?
● The motor is broken?
● Detection circuit of the mainboard is defined abnormal?
Start
No Appearance of the
Is there jumper cap on the mainboard?
jumper cap
Assemble the jumper

cap with the same model
Yes
No Is malfunction
eliminated
Is the jumper cap inserted correctly No

and tightly?
Insert the jumper

cap tightly
Yes
eliminated
Replace the jumper cap with

the same model
Is malfunction Yes
eliminated
Yes
No
Replace the mainboard

with the same model
End

Service Manual
4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8

● Instant energization afte de-energization while the capacitordischarges slowly?
● The zero-cross detectioncircuit of the mainboard is defined abnormal?
Start
Turn power off for

1minute,the turn
back on
The unit returns to normal.

U8 is still No Conclusion:U8 is displayed due to
displayed power off/on while the
capacitor discharges slowly.
Yes
The zero-cross detection circuit

of the mainboard is defined
abnormal.Replace the mainboard
with the same model
End

Service Manual
Outdoor unit
1. Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel)
Main Check Points:
●Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC.
●Is the reactor (L) correctly connected? Is the connection loose or fallen? Is the reactor (L) damaged?
Fault diagnosis process:
Turn on the unit

and wait 1 minute
Use DC voltmeter
to measure the
voltage on the two
ends of electrolytic
capacitor
Fault with the voltage

testing circuit on Replace the control
Voltage higher than 200V? Y
control panel AP1 panel AP1
Measure the AC voltage between

terminalL and N on wiring board
XT(power supply)
Shut down the power

Voltage within and repair the power power on and If the fault is
210VAC~250VAC? N supply to restore the restart the unit Y
eliminated?
range
210VAC~250VAC
Shut down the power and wait 20 minutes;

or use DC voltmeter to measure the voltage
N
on the two ends of capacitor , until the
voltage is lower than 20V
Check the
connection of reactor
(L in the Electrical
Wiring Diagram)
Connect the reactor

If the wiring of Laccording to Elec- Re-energize and If the fault is
reactor Lis normal? N trical Wiring Diagr- Y
turn on the unit eliminated?
am correctly
Replace the control

panel AP1 N
End

Service Manual
2. IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control
panel)
Main check points:
●Is the connection between control panel AP1 and compressor COMP secure? Loose? Is the connection in correct order?
●Is the voltage input of the machine within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the
wiring board XT)
●Is the compressor coil resistance normal? Is the insulation of compressor coil against the copper tube in good condition?
●Is the working load of the machine too high? Is the radiation good?
●Is the charge volume of refrigerant correct?

Service Manual
Energize and
switch on
Use AC voltmeter If the voltage

to measure the Check the supply
IPM protection between terminal L
occurs after the voltage between and N on wiring voltage and
machine has run for Y terminal L and N N restore it to
board XT is within
a period of time? on the wiring 210VAC~250VAC? 210VAC~250VAC
board XT)
Restart the unit. Before

Voltage between protection occurs,
use DC voltmeter to If the unit can
Y the two ends of celectrolytic measure the voltage N Y
capacitor is between the two work
higher than ends of electrolytic normally?
capacitor on control
250V panel AP1
Please confirm:
1. If the indoor and N
outdoor heat
exchangers are Stop the unit and Reconnect the
dirty? If they are disconnect the power capacitor C2 according
obstructed by other supply. Then, check The connection to Electrical Wiring
objects which affect the connection of of capacitor C2 Y Diagram. Then,
the heat exchange capacitor C2 Restart the
of indoor and according to Electrical is loose.
outdoor unit. Wiring Diagram. unit.
2. If the indoor and N
outdoor fans are
working normally?
3. If the environment Remove the wires Stop the unit and
temperature is too on the two ends of disconnect the power
high, resulting in capacitor C2. Then, supply. Wait 20 minutes,
that the system use capacitance or use DC voltmeter to If the unit can
pressure is too high meter to measure measure the voltage N work normallv? Y
and exceeds the the capacitor C2. between the two ends of
permissible range? Verify as per the capacitor C2, until the
4. If the charge Parameters Sheet. voltage is lower than 20V
volume of
refrigerant is too
much, resulting in
that the system Replace the capacitor
pressure is too If capacitor If the unit can Y
high? C2 is failed? Y C2. Then, energize work normally?
5. Other conditions and start the unit.
resulting in that the
system pressure
becomes too high. Replace the
N N
control panel AP1
Refer to the
Electrical Wiring Take corrective actions
Diagram and check If there is any according to Technical
if the connection abnormality Y Service Manual, and If the unit can
between AP1 and described above? Y
COMP is loose and if then energize and start work normally?
the connection order the unit.
is correct.
N Replace the
control panel AP1 N
If the connection Connect the control panel

between AP1 and AP1 and compressor
COMP is unsecure Y COMP correctly according
or the connection to the Electrical Wiring
order is wrong? Diagram. Then, energize
and start the unit. If the unit can
work Y
normally?
Use ohmmeter to
measure the resistance
between the three If the Replace the
terminals on compressor resistance is compressor
COMP, and compare the normal? N
measurements with the COMP
compressor resistance on
Service Manual.
N
Use ohmmeter to
measure the resistance Resistance higher
between the two than 500MΩ?
terminals of compressor
COMP and copper tube.
Y
Replace the
control panel
AP1
END

Service Manual
3. High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor
unit)
Mainly detect:
●Is outdoor ambient temperature in normal range?
●Are the outdoor and indoor fans operating normally?
●Is the heat dissipation environment inside and outside the unit good?
Overheat and high

temperature protection
Normal protection, please operate

Is outdoor ambient temperature higher than 53? Y it after the outdoor ambient temp-
erature is normalized.
20 minutes after the complete

unit is powered off.
Improve the heat

Is heat dissipation of the indoor unit Y dissipation environ-
and outdoor unit abnormal? ment of the unit
1. Check if the fan terminal OFAN

is connected correctly
Does the outdoor fan work normally? N 2. Resistance between any two
terminals is measure by an ohm
gauge and should be less than 1K
Ohm.
Replace the fan

capacitor C1
Replace the
control panel AP1
Replace the
outdoor fan
End

Service Manual
4. Start-up failure (following AP1 for outdoor unit control board)

Mainly detect:
●Whether the compressor wiring is connected correct?
●Is compressor broken?
●Is time for compressor stopping enough?
Power on the unit
Is stop time of the compressor N Restart it up after

longer than 3 minutes? 3 minutes
Does startup fail?
Connect the wires as

Are the wires for the compressor connected N per the connection
correctly? Is connection sequence right? diagram
Replace the control panel AP1
If the fault is eliminated?
Replace the
compressor
End

Service Manual
5. Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit)
Mainly detect:
●Is the system pressure too high?
●Is the input voltage too low?
Out of step occurs once the Out of step occurs in

unit is powered on. operation
Is stop time of the Check if the fan terminal Replace the fan
Is the outdoor fan working
compressor longer than OFAN is connected correctly capacitor C1
normally?
3 minutes?
Replace the
outdoor fan
Is the outdoor unit blocked Remove foreign objects
by foreign objects?
Are the wires for the compressor connected
correctly? Is connection sequence right?
Is the connection made in clockwise
direction?
Replace the
control panel AP1
Connect the
wires correctly
Replace the control

panel AP1
Replace the
compressor
Replace the
compressor
End
End

Service Manual
6. Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board)
Mainly detect:
●Is the PMV connected well or not? Is PMV damaged?
●Is refrigerant leaked?
20 minutes after the

complete unit is
powered off
Is the terminal FA for the Connect the

electronic expansion valve wires correctly
connected correctly?
Resistances between the first four pins

close to the terminal hole and the fifth
pin are almost the same, less than 100
ohm.
Replace the electronic

expansion valve
Replace the
control panel
AP1
Coolant leakage, refilling

the coolant
End

Service Manual
7. Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the
outdoor unit)
Mainly detect:
●Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken
Start
Check wiring of the

reactor (L) of the
outdoor unit and the
PFC capacitor
Replace it as per the

Whether there is any wiring diagram and
damage or Y If the fault is eliminated?
reconnect the wires
short-circuit?
Remove the PFC capacitor

and measure resistance N
between the two terminals.
The capacitor is
Is the resistance around zero? Y short circuited and Restart the unit If the fault is eliminated? Y
the capacitor
should be repla-
ced
N
Disconnect the terminals for the

reactor and measure the resistance N
between the two terminals of the
reactor by an ohm gauge
Whether there is any damage Y Replace the reactor Restart the unit If the fault is eliminated? Y
or short-circuit?
Replace the control

N
panel AP1
End

Service Manual
8. Communication malfunction: (following AP1 for outdoor unit control board)

Mainly detect:
●Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged?
●Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any
damage?
Start
Did the equipment operate

N
normally before the failure
Y occurs?
Check the wiring of the indoor and

outdoor units with reference to the
wiring diagram
Check wiring inside of

the indoor and outdoor Y Is the connection right?
units N
Correctly connect the

The AP1 voltage corresponding wires for
detection circuit Y Are wires broken? the indoor and outdoor
is at fault units with reference to
the wiring diagram
N
Check the communication

If the fault is eliminated? N
circuit of the outdoor unit
The communication Replace the main board

Y
circuit is abnormal AP1 of the outdoor unit
N
N
Replace the main board
of the indoor unit
Y
Y End

Service Manual
9.3 Troubleshooting for Normal Malfunction

1. Air Conditioner Cant be Started Up
Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting
Confirm whether its due to power failure. If yes,
No power supply, or poor After energization, operation indicator isnt bright wait for power recovery. If not, check power
connection for power plug and the buzzer cant give out sound supply circuit and make sure the power plug is
connected well.
Wrong wire connection between
Check the circuit according to circuit diagram
indoor unit and outdoor unit, Under normal power supply circumstances,
and connect wires correctly. Make sure all
or poor connection for wiring operation indicator isnt bright after energization
wiring terminals are connected firmly
terminals
Make sure the air conditioner is grounded
reliably
Make sure wires of air conditioner is connected
After energization, room circuit breaker trips off at
Electric leakage for air conditioner correctly
once
Check the wiring inside air conditioner. Check
whether the insulation layer of power cord is
damaged; if yes, place the power cord.
Model selection for air switch is
After energization, air switch trips off Select proper air switch
improper
After energization, operation indicator is bright,
Replace batteries for remote controller
Malfunction of remote controller while no display on remote controller or buttons
Repair or replace remote controller
have no action.
2. Poor Cooling (Heating) for Air Conditioner

Set temperature is improper Observe the set temperature on remote controller Adjust the set temperature
Rotation speed of the IDU fan
Small wind blow Set the fan speed at high or medium
motor is set too low
Filter of indoor unit is blocked Check the filter to see its blocked Clean the filter
Check whether the installation postion is proper
Installation position for indoor unit Adjust the installation position, and install the
according to installation requirement for air
and outdoor unit is improper rainproof and sunproof for outdoor unit
conditioner
Discharged air temperature during cooling is
higher than normal discharged wind temperature;
Discharged air temperature during heating is Find out the leakage causes and deal with it.
Refrigerant is leaking
lower than normal discharged wind temperature; Add refrigerant.
Units pressure is much lower than regulated
range
Malfunction of 4-way valve Blow cold wind during heating Replace the 4-way valve
Discharged air temperature during cooling is
higher than normal discharged wind temperature;
Discharged air temperature during heating is
Malfunction of capillary lower than normal discharged wind temperature; Replace the capillary
Unitt pressure is much lower than regulated
range. If refrigerant isnt leaking, part of capillary
is blocked
Flow volume of valve is The pressure of valves is much lower than that
Open the valve completely
insufficient stated in the specification
Refer to point 3 of maintenance method for
Malfunction of horizontal louver Horizontal louver cant swing
details
Refer to troubleshooting for H6 for maintenance
Malfunction of the IDU fan motor The IDU fan motor cant operate
method in details
Malfunction of the ODU fan motor The ODU fan motor cant operate
details
Malfunction of compressor Compressor cant operate
details
3. Horizontal Louver Cant Swing

Connect wires according to wiring diagram to
Wrong wire connection, or poor Check the wiring status according to circuit
make sure all wiring terminals are connected
connection diagram
firmly
Stepping motor is damaged Stepping motor cant operate Repair or replace stepping motor
Others are all normal, while horizontal louver cant
Main board is damaged Replace the main board with the same model
operate

Service Manual
4. ODU Fan Motor Cant Operate

Possible causes Discriminating method (air conditioner status) Troubleshooting
connection diagram
firmly
Measure the capacity of fan capacitor with an
Capacity of the ODU fan motor is universal meter and find that the capacity is out of
Replace the capacity of fan
damaged the deviation range indicated on the nameplate of
fan capacitor.
Power voltage is a little low or Use universal meter to measure the power supply
Suggest to equip with voltage regulator
high voltage. The voltage is a little high or low
When unit is on, cooling/heating performance
Change compressor oil and refrigerant. If no
Motor of outdoor unit is damaged is bad and ODU compressor generates a lot of
better, replace the compressor with a new one
noise and heat.
5. Compressor Cant Operate

connection diagram
firmly
Measure the capacity of fan capacitor with an
Capacity of compressor is universal meter and find that the capacity is out of
Replace the compressor capacitor
damaged the deviation range indicated on the nameplate of
fan capacitor.
Power voltage is a little low or Use universal meter to measure the power supply
Suggest to equip with voltage regulator
high voltage. The voltage is a little high or low
Use universal meter to measure the resistance
Coil of compressor is burnt out Repair or replace compressor
between compressor terminals and its 0
Cylinder of compressor is blocked Compressor cant operate Repair or replace compressor
6. Air Conditioner is Leaking

Eliminate the foreign objects inside the drain
Drain pipe is blocked Water leaking from indoor unit
pipe
Drain pipe is broken Water leaking from drain pipe Replace drain pipe
Water leaking from the pipe connection place of
Wrapping is not tight Wrap it again and bundle it tightly
indoor unit
7. Abnormal Sound and Vibration

When turn on or turn off the unit,
the panel and other parts will Normal phenomenon. Abnormal sound will
Theres the sound of "PAPA"
expand and theres abnormal disappear after a few minutes.
sound
When turn on or turn off the
unit, theres abnormal sound due Normal phenomenon. Abnormal sound will
Water-running sound can be heard
to flow of refrigerant inside air disappear after a few minutes.
conditioner
Foreign objects inside the indoor Remove foreign objects. Adjust all parts position
unit or therere parts touching Theres abnormal sound fro indoor unit of indoor unit, tighten screws and stick damping
together inside the indoor unit plaster between connected parts
Foreign objects inside the outdoor Remove foreign objects. Adjust all parts position
unit or therere parts touching Theres abnormal sound fro outdoor unit of outdoor unit, tighten screws and stick
together inside the outdoor unit damping plaster between connected parts
Short circuit inside the magnetic During heating, the way valve has abnormal
Replace magnetic coil
coil electromagnetic sound
Adjust the support foot mat of compressor,
Abnormal shake of compressor Outdoor unit gives out abnormal sound
tighten the bolts
If add too much refrigerant during maintenance,
Abnormal sound inside the
Abnormal sound inside the compressor please reduce refrigerant properly. Replace
compressor
compressor for other circumstances.

Service Manual
10. Exploded View and Parts List

10.1 Indoor Unit
The component picture is only for reference; please refer to the actual product.

Service Manual
Part Code
Description
No. FTKS09RL216 FTKS12RL216 Qty
Product Code CB426N01900_L40890 CB426N02100_L40890
1 Front Panel 27230005392 27230005393 1
2 Display Board 30565265 30565265 1
3 Front Case Assy 2002273001 2002273101 1
4 Helicoid Tongue 26112508 26112436 1
5 Left Axile Bush 10512037 10512037 1
6 Rear Case assy 20162010 00000100093 1
7 Drainage Hose 0523001408 05230014 1
8 Ring of Bearing 26152022 26152022 1
9 O-Gasket sub-assy of Bearing 7651205102 7651205102 1
10 Evaporator Support 24212180 24212179 1
11 Evaporator Assy 0100200004407 0100297601 1
12 Wall Mounting Frame 01252043 01252484 1
13 Cross Flow Fan 10352059 10352056 1
14 Fan Motor 1501208905 1501214604 1
15 Connecting pipe clamp 2611216401 2611216401 1
16 Rubber Plug (Water Tray) 76712012 76712012 1
17 Stepping Motor 1521212901 1521210701 1
18 Crank 73012005 73012005 1
19 Electric Box Assy 10000202324 10000202325 1
20 Axile Bush 10542036 10542036 1
21 Terminal Board 42011233 42011233 1
22 Jumper 4202021911 4202021917 1
23 Main Board 30138000660 30138000655 1
24 Electric Box Cover Sub-Assy 0140206501 0140206501 1
25 Shield Cover of Electric Box Cover 01592150 01592150 1
26 Electric Box Cover 2011220701 2011220701 1
27 Remote Controller 30510537 30510537 1
Above data is subject to change without notice.

Service Manual
10.2 Outdoor Unit
The component picture is only for reference; please refer to the actual product.

Service Manual
Part Code
Description
No. RKS09RL216 RKS12RL216 Qty
Product Code CB427W03200_L40890 CB427W03000_L40890
1 Front Grill 22413008 22413008 1
2 Front Panel Assy 0153304801 0153304801 1
3 Axial Flow Fan 10333004 10333004 1
4 Fan Motor 1501306723 1501306723 1
5 Chassis Sub-assy 0170000009501 02803187P 1
6 Compressor Gasket 76713027 76713027 3
7 Compressor and fittings 00103892 00103892 1
8 Valve Support 0171314201P 0171314201P 1
9 Cut off Valve Assy 07133474 07133474 1
10 Valve Support Block 26113017 26113017 2
11 Cut off Valve 071302391 07133082 1
12 Big Handle 262334332 262334332 1
13 Right Side Plate Assy 0130317801 0130317801 1
14 Inhalation Tube Sub-assy 03001000262 03001000262 1
15 Discharge Tube 03500800572 03500800570 1
16 Temperature Sensor 3900030805 3900030805 1
17 Capillary Sub-assy 03000600338 03000600339 1
18 Rear Grill 01473009 01473009 1
19 Condenser Assy 01100200359_L40890 01100200360_L40890 1
20 Clapboard Sub-Assy 0123338502 0123338502 1
21 Top Cover Sub-Assy 01253073 01253073 1
22 Motor Support 01703104 0170310401 1
23 Electric Box Assy 10000100557 10000100558 1
24 Reactor 43130184 43130184 1
25 Electric Box Cover Sub-Assy 10000500128 10000500129 1
26 Main Board 30138000678 30138000680 1
27 Terminal Board 42010313 42010313 1
28 Wire Clamp 71010103 71010003 1
Above data is subject to change without notice.

Service Manual
11. Removal Procedure Warning: Be sure to wait for a minimum of 20 minutes after
turning off all power supplies and discharge the refrigerant
completely before removal.
11.1 Removal Procedure of Indoor Unit
Step Procedure
1. Remove filter assembly

Front panel
Open the front panel. Push the left filter

and right filter until they are separate from
the groove on the front panel. Front
Remove the left filter and right filter case
respectively. Left filter
Groove Right filter
2. Remove horizontal louver
Push out the axile bush on horizontal

louver. Bend the horizontal louver with
hand and then separate the horizontal
louver from the crankshaft of step motor
to remove it.
Location of step motor
Horizontal louver
Axile bush
3. Remove panel
a Screw off the 2 screws that are locking

the display board.
Note:This display can be disassembled
only after removing the front case (refer to
step 5 of disassembly).
Display
Screws
b Separate the panel rotation shaft from

the groove fixing the front panel and then
removes the front panel.

Service Manual
Step Procedure
4. Remove electric box cover 2

Screw
Electric box cover 2
Remove the screw on the electric box

cover 2 to remove the electric box cover 2.
5. Remove front case sub-assy

Screws
a Remove the screws fixing front case.
Note:
1.Open the screw caps before removing
the screws around the air outlet.
2.The quantity of screws fixing the front
Front case
case sub-assy is different for different
sub-assy Screw caps
models.
Screw
Clasp
b Loosen the connection clasps between
front case sub-assy and bottom case. Lift Front case
up the front case sub-assy and take it out. sub-assy
6. Remove vertical louver
Loosen the connection clasps between

vertical louver and bottom case to remove
vertical louver. Bottom
case
Vertical
louver
Clasps Vertical
louver

Service Manual
Step Procedure
7. Remove electric box assy
a Loosen the connection clasps between

shield cover of electric box sub-assy and Clasps
electric box, and then remove the shield
cover of electric box sub-assy.
Remove the screw fixing electric box assy .
Electric box
Shield cover of electric
box sub-assy
Indoor tube
temperature
Grounding screw sensor Electric box assy
b ① Take off the water retaining sheet.
Remove the cold plasma generator by
screwing off the locking screw on the
generator.
② Take off the indoor tube temperature Cold plasma
sensor. generator
③ Screw off 1 grounding screw. Wiring
④ Remove the wiring terminals of motor and terminal
stepping motor. Screw
of motor
⑤ Remove the electric box assy.
Water retaining Wiring
sheet terminal
of stepping
motor
Screw
Main board
c Twist off the screws that are locking
each lead wire and rotate the electric
box assy.
Twist off the screws that are locking the
wire clip. Loosen the power cord and
remove its wiring terminal. Lift up the
main board and take it off.
Note:the photo is for reference only,
please refer to the actual one.
Power cord
Screw
Wire clip

Service Manual
Step Procedure
Instruction: Some wiring terminal of this

product is with lock catch and other devices. circlip
The pulling method is as below:
holder
1.Remove the soft sheath for some terminals
at first, hold the circlip and then pull out the
terminals.
soft sheath connector
2.Pull out the holder for some terminals at
first (holder is not available for some wiring
terminal), hold the connector and then pull the
terminal.
8. Remove evaporator assy Screws Evaporator assy
a Remove 3 screws fixing evaporator assy.
Connection pipe clamp

b At the back of the unit, remove the Screw
screw fixing connection pipe clamp and
then remove the connection pipe clamp.
Groove
Bottom case
c First remove the left side of the evaporator
from the groove of bottom case and then
remove the right side from the clasp on
the bottom case.
Clasp
Evaporator assy
Connection pipe
d Adjust the position of connection pipe

on evaporator slightly and then lift the
evaporator upwards to remove it.

Service Manual
Step Procedure
9. Remove motor and cross flow blade
a Remove the screws fixing motor clamp

Screws
and then remove the motor clamp.
Motor clamp
Cross flow
b Remove the screws at the connection Screw
place of cross flow blade and motor; lift Holder Motor
the motor and cross flow blade upwards sub-assy
to remove them.
Remove the bearing holder sub-assy.
Remove the screw fixing step motor and
then remove the step motor.
Screws
Step motor

Service Manual
11.2 Removal Procedure of Outdoor Unit
NOTE: This models havent 4-way valve assy
Step Procedure
1.Remove big handle
Before disassamble．
big
Remove 1 connection screw fixing big
handleand then removethe big handle.
handle
2. Remove top cover
top cover
Remove 3 connection screws among

top cover plate, front panel and right
sideplate. Then remove top cover
plate.

Service Manual
Step Procedure
3.Remove grille and front panel
Remove connection screws between the front grille

and the front panel. Then remove the front grille.
Remove connection screws connecting the front
panel with the chassis and the motor support, and
then remove the front panel.
Grille Panel
4.Remove axial flow blade
Axial flow blade
Remove the nut fixing the blade and then

remove the axial flow blade.
5.Remove right side plate
Remove connection screws connecting the right Right side plate

side plate with the valve support and the electric
box. Then remove the right side plate.

Service Manual
Step Procedure
6.Remove electric box assy

Electric box assy
Remove the 2 screws fixing the cover of elec-

tric box. Lift to remove the cover. Loosen the
wire and disconnect the terminal. Lift to re-
move the electric box assy.
7.Remove 4-way valve assy
Unscrew the fastening nut of the 4-way Valve

Assy coil and remove the coil. Wrap the 4- 4-way Valve Assy
way Valve Assy with wet cotton and unsolder
the 4 weld spots connecting the 4-way Valve
Assy to take it out.(Note: Refrigerant should
be discharged firstly.) Welding process
should be as quickly as possible and keep
wrapping cotton wet all the time. Be sure not
to burn out the lead-out wire of compressor.
8.Remove capillary sub-assy
Unsolder weld point of capillary Sub-assy, Capillary Sub-assy

valve and outlet pipe of condensator. Then
remove the capillary Sub-assy. Do not block
the capillary when unsoldering it. (Note: be-
fore unsoldering,discharge refrigerants
completely)

Service Manual
Step Procedure
9.Remove motor and motor support
Motor support
Remove the 4 tapping screws fixing the motor.

Pull out the lead-out wire and remove the
Motor
motor. Remove the 2 tapping screws fixing
the motor support. Lift motor support to re-
move it.
10.Remove clapboard sub-assy
Clapboard Sub-Assy
Loosen the screws of the Clapboard Sub-Assy .

The Clapboard Sub-Assy has a hook on the
lower side. Lift and pull the Clapboard Sub-Assy
to remove.

Service Manual
Step Procedure
11.Remove Compressor
a Remove the 2 screws fixing the gas valve.

Unsolder the welding spot connecting gas valve
and air return pipe and remove the gas valve.
(Note: it is necessary to warp the gas valve when
unsoldering the welding spot.) Remove the 2
screws fixing liquid valve. Unsolder the weld- Liquid valve
ing spot connecting liquid valve and remove the
liquid valve.
Gas valve
b Remove the 3 footing screws of the compressor

and remove the compressor.
Compressor

Service Manual
Appendix:
Appendix 1: Reference Sheet of Celsius and Fahrenheit
Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32
Set temperature
Fahrenheit Fahrenheit Fahrenheit
display Fahrenheit display Fahrenheit display Fahrenheit
Celsius（℃） Celsius（℃） Celsius（℃）
temperature （℉） temperature （℉） temperature （℉）
（℉）（℉）（℉）
61 60.8 16 69/70 69.8 21 78/79 78.8 26
62/63 62.6 17 71/72 71.6 22 80/81 80.6 27
64/65 64.4 18 73/74 73.4 23 82/83 82.4 28
66/67 66.2 19 75/76 75.2 24 84/85 84.2 29
68 68 20 77 77 25 86 86 30
Ambient temperature
Fahrenheit Fahrenheit Fahrenheit
display Fahrenheit display Fahrenheit display Fahrenheit
Celsius（℃） Celsius（℃） Celsius（℃）
temperature （℉） temperature （℉） temperature （℉）
（℉）（℉）（℉）
32/33 32 0 55/56 55.4 13 79/80 78.8 26
34/35 33.8 1 57/58 57.2 14 81 80.6 27
36 35.6 2 59/60 59 15 82/83 82.4 28
37/38 37.4 3 61/62 60.8 16 84/85 84.2 29
39/40 39.2 4 63 62.6 17 86/87 86 30
41/42 41 5 64/65 64.4 18 88/89 87.8 31
43/44 42.8 6 66/67 66.2 19 90 89.6 32
45 44.6 7 68/69 68 20 91/92 91.4 33
46/47 46.4 8 70/71 69.8 21 93/94 93.2 34
48/49 48.2 9 72 71.6 22 95/96 95 35
50/51 50 10 73/74 73.4 23 97/98 96.8 36
52/53 51.8 11 75/76 75.2 24 99 98.6 37
54 53.6 12 77/78 77 25
Appendix 2: Configuration of Connection Pipe

1.Standard length of connection pipe Max length of Max height
Cooling capacity
connection pipe difference
● 5m, 7.5m, 8m.
5000 Btu/h(1465 W) 15 m 5m
2.Min. length of connection pipe is 3m.
7000 Btu/h(2051 W) 15 m 5m
3.Max. length of connection pipe and max. high difference.
9000 Btu/h(2637 W) 15 m 10 m
4.The additional refrigerant oil and refrigerant charging required after 12000 Btu/h(3516 W) 20 m 10 m
prolonging connection pipe 18000 Btu/h(5274 W) 25 m 10 m
● After the length of connection pipe is prolonged for 10m at the basis 24000 Btu/h(7032 W) 25 m 10 m
of standard length, you should add 5ml of refrigerant oil for each 28000 Btu/h(8204 W) 30 m 10 m
additional 5m of connection pipe. 36000 Btu/h(10548 W) 30 m 20 m
● The calculation method of additional refrigerant charging amount (on 42000 Btu/h(12306 W) 30 m 20 m
the basis of liquid pipe): 48000 Btu/h(14064 W) 30 m 20 m
● When the length of connection pipe is above 5m, add refrigerant according to the prolonged length of liquid pipe. The additional
refrigerant charging amount per meter is different according to the diameter of liquid pipe. See the following sheet.
● Additional refrigerant charging amount = prolonged length of liquid pipe X additional refrigerant charging amount per meter
Additional refrigerant charging amount for R22, R407C, R410A and R134a
Diameter of connection pipe Outdoor unit throttle
Liquid pipe(mm) Gas pipe(mm) Cooling only(g/m) Cooling and heating(g/m)
Ф6 Ф9.5 or Ф12 15 20
Ф6 or Ф9.5 Ф16 or Ф19 15 20
Ф12 Ф19 or Ф22.2 30 120
Ф16 Ф25.4 or Ф31.8 60 120
Ф19 / 250 250
Ф22.2 / 350 350

Service Manual
Appendix 3: Pipe Expanding Method

Pipe
Note:
Improper pipe expanding is the main cause of refrigerant leakage.Please Pipe cutter
expand the pipe according to the following steps:
Leaning Uneven Burr
A:Cut the pip
● Confirm the pipe length according to the distance of indoor unit and outdoor unit.
● Cut the required pipe with pipe cutter.
B:Remove the burrs Pipe
● Remove the burrs with shaper and prevent the burrs from getting into the pipe. Shaper
Downwards
C:Put on suitable insulating pipe
D:Put on the union nut Union pipe

● Remove the union nut on the indoor connection pipe and outdoor valve; install
the union nut on the pipe. Pipe
E:Expand the port

● Expand the port with expander.
Hard
Note: mold
Expander
● "A" is different according to the diameter, please refer to the sheet below:
A(mm) Pipe
Outer diameter(mm)
Max Min
Ф6 - 6.35 (1/4") 1.3 0.7
Ф9.52 (3/8”) 1.6 1.0
Ф12 - 12.70 (1/2”) 1.8 1.0
Ф16 - 15.88 (5/8”) 2.4 2.2
Smooth surface
F:Inspection
● Check the quality of expanding port. If there is any blemish, expand the
Improper expanding
port again according to the steps above.
leaning damaged crack uneven

surface thickness
The length is equal

Service Manual
Appendix 4: List of Resistance for Temperature Sensor
Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K)
Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ)

-19 138.1 20 18.75 59 3.848 98 1.071
-18 128.6 21 17.93 60 3.711 99 1.039
-17 121.6 22 17.14 61 3.579 100 1.009
-16 115 23 16.39 62 3.454 101 0.98
-15 108.7 24 15.68 63 3.333 102 0.952
-14 102.9 25 15 64 3.217 103 0.925
-13 97.4 26 14.36 65 3.105 104 0.898
-12 92.22 27 13.74 66 2.998 105 0.873
-11 87.35 28 13.16 67 2.896 106 0.848
-10 82.75 29 12.6 68 2.797 107 0.825
-9 78.43 30 12.07 69 2.702 108 0.802
-8 74.35 31 11.57 70 2.611 109 0.779
-7 70.5 32 11.09 71 2.523 110 0.758
-6 66.88 33 10.63 72 2.439 111 0.737
-5 63.46 34 10.2 73 2.358 112 0.717
-4 60.23 35 9.779 74 2.28 113 0.697
-3 57.18 36 9.382 75 2.206 114 0.678
-2 54.31 37 9.003 76 2.133 115 0.66
-1 51.59 38 8.642 77 2.064 116 0.642
0 49.02 39 8.297 78 1.997 117 0.625
1 46.6 40 7.967 79 1.933 118 0.608
2 44.31 41 7.653 80 1.871 119 0.592
3 42.14 42 7.352 81 1.811 120 0.577
4 40.09 43 7.065 82 1.754 121 0.561
5 38.15 44 6.791 83 1.699 122 0.547
6 36.32 45 6.529 84 1.645 123 0.532
7 34.58 46 6.278 85 1.594 124 0.519
8 32.94 47 6.038 86 1.544 125 0.505
9 31.38 48 5.809 87 1.497 126 0.492
10 29.9 49 5.589 88 1.451 127 0.48
11 28.51 50 5.379 89 1.408 128 0.467
12 27.18 51 5.197 90 1.363 129 0.456
13 25.92 52 4.986 91 1.322 130 0.444
14 24.73 53 4.802 92 1.282 131 0.433
15 23.6 54 4.625 93 1.244 132 0.422
16 22.53 55 4.456 94 1.207 133 0.412
17 21.51 56 4.294 95 1.171 134 0.401
18 20.54 57 4.139 96 1.136 135 0.391
19 19.63 58 3.99 97 1.103 136 0.382

Service Manual
Resistance Table of Tube Temperature Sensors for Outdoor and Indoor(20K)

-19 181.4 20 25.01 59 5.13 98 1.427
-18 171.4 21 23.9 60 4.948 99 1.386
-17 162.1 22 22.85 61 4.773 100 1.346
-16 153.3 23 21.85 62 4.605 101 1.307
-15 145 24 20.9 63 4.443 102 1.269
-14 137.2 25 20 64 4.289 103 1.233
-13 129.9 26 19.14 65 4.14 104 1.198
-12 123 27 18.13 66 3.998 105 1.164
-11 116.5 28 17.55 67 3.861 106 1.131
-10 110.3 29 16.8 68 3.729 107 1.099
-9 104.6 30 16.1 69 3.603 108 1.069
-8 99.13 31 15.43 70 3.481 109 1.039
-7 94 32 14.79 71 3.364 110 1.01
-6 89.17 33 14.18 72 3.252 111 0.983
-5 84.61 34 13.59 73 3.144 112 0.956
-4 80.31 35 13.04 74 3.04 113 0.93
-3 76.24 36 12.51 75 2.94 114 0.904
-2 72.41 37 12 76 2.844 115 0.88
-1 68.79 38 11.52 77 2.752 116 0.856
0 65.37 39 11.06 78 2.663 117 0.833
1 62.13 40 10.62 79 2.577 118 0.811
2 59.08 41 10.2 80 2.495 119 0.77
3 56.19 42 9.803 81 2.415 120 0.769
4 53.46 43 9.42 82 2.339 121 0.746
5 50.87 44 9.054 83 2.265 122 0.729
6 48.42 45 8.705 84 2.194 123 0.71
7 46.11 46 8.37 85 2.125 124 0.692
8 43.92 47 8.051 86 2.059 125 0.674
9 41.84 48 7.745 87 1.996 126 0.658
10 39.87 49 7.453 88 1.934 127 0.64
11 38.01 50 7.173 89 1.875 128 0.623
12 36.24 51 6.905 90 1.818 129 0.607
13 34.57 52 6.648 91 1.736 130 0.592
14 32.98 53 6.403 92 1.71 131 0.577
15 31.47 54 6.167 93 1.658 132 0.563
16 30.04 55 5.942 94 1.609 133 0.549
17 28.68 56 5.726 95 1.561 134 0.535
18 27.39 57 5.519 96 1.515 135 0.521
19 26.17 58 5.32 97 1.47 136 0.509

Service Manual
Resistance Table of Discharge Temperature Sensor for Outdoor(50K)

-29 853.5 10 98 49 18.34 88 4.75
-28 799.8 11 93.42 50 17.65 89 4.61
-27 750 12 89.07 51 16.99 90 4.47
-26 703.8 13 84.95 52 16.36 91 4.33
-25 660.8 14 81.05 53 15.75 92 4.20
-24 620.8 15 77.35 54 15.17 93 4.08
-23 580.6 16 73.83 55 14.62 94 3.96
-22 548.9 17 70.5 56 14.09 95 3.84
-21 516.6 18 67.34 57 13.58 96 3.73
-20 486.5 19 64.33 58 13.09 97 3.62
-19 458.3 20 61.48 59 12.62 98 3.51
-18 432 21 58.77 60 12.17 99 3.41
-17 407.4 22 56.19 61 11.74 100 3.32
-16 384.5 23 53.74 62 11.32 101 3.22
-15 362.9 24 51.41 63 10.93 102 3.13
-14 342.8 25 49.19 64 10.54 103 3.04
-13 323.9 26 47.08 65 10.18 104 2.96
-12 306.2 27 45.07 66 9.83 105 2.87
-11 289.6 28 43.16 67 9.49 106 2.79
-10 274 29 41.34 68 9.17 107 2.72
-9 259.3 30 39.61 69 8.85 108 2.64
-8 245.6 31 37.96 70 8.56 109 2.57
-7 232.6 32 36.38 71 8.27 110 2.50
-6 220.5 33 34.88 72 7.99 111 2.43
-5 209 34 33.45 73 7.73 112 2.37
-4 198.3 35 32.09 74 7.47 113 2.30
-3 199.1 36 30.79 75 7.22 114 2.24
-2 178.5 37 29.54 76 7.00 115 2.18
-1 169.5 38 28.36 77 6.76 116 2.12
0 161 39 27.23 78 6.54 117 2.07
1 153 40 26.15 79 6.33 118 2.02
2 145.4 41 25.11 80 6.13 119 1.96
3 138.3 42 24.13 81 5.93 120 1.91
4 131.5 43 23.19 82 5.75 121 1.86
5 125.1 44 22.29 83 5.57 122 1.82
6 119.1 45 21.43 84 5.39 123 1.77
7 113.4 46 20.6 85 5.22 124 1.73
8 108 47 19.81 86 5.06 125 1.68
9 102.8 48 19.06 87 4.90 126 1.64

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FTKS-RL - RKS-RL (09,12) - Service Manual - EN

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FTKS-RL - RKS-RL (09,12) - Service Manual - EN

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Service Manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

Part Ⅰ : Technical Information........................................................................1

Part Ⅱ : Installation and Maintenance ..................................................25

Part Ⅰ : Technical Information

Parameter Unit Value Value

Outdoor Unit Model RKS09RL216 RKS12RL216

2.2 Operation Characteristic Curve

2.4 Cooling and Heating Data Sheet in Rated Frequency

2.5 Noise Curve

Indoor side noise Outdoor side noise

3. Outline Dimension Diagram

168.5 462 159.5

131 542 172

3.2 Outdoor Unit

4. Refrigerant System Diagram

Connection pipe specification:

Symbol Symbol Color Symbol Symbol Color Symbol Name

PGF PG SWING-UD XT1

WARNING OUTTUBE OUTROOM EXHAUST REACTOR

5.2 PCB Printed Diagram

1 PFC induction wire

6. Function and Control

Introduction for Icons on Display Screen

Dry mode Lock

Auto mode Send signal

Heat mode Set temperature

Set fan speed

Introduction for Buttons on Remote Controller

6.2 Brief Description of Modes and Functions

(8) I feel control mode

(2) Check effective judgment controls of parameters

once when the power is on the first time).

18 Installation and Maintenance

Installation and Maintenance 19

20 Installation and Maintenance

Installation and Maintenance 21

(6) Voltage sag protection

22 Installation and Maintenance

(12) Starting-up Failure Protection for Compressor

Installation and Maintenance 23

6. Electric Heating Function of Chassis

24 Installation and Maintenance

Part Ⅱ : Installation and Maintenance

Installation and Maintenance 25

Main Tools for Installation and Maintenance

4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner

7. Electronic leakage detector 8. Vacuum pump 9. Pressure meter

26 Installation and Maintenance

Space to the ceiling

At least 15cm Space to the wall

Space to the wall

At least 30cm Drainage pipe

Installation and Maintenance 27

Preparation before installation

Read the requirements select installation Prepare tools

Select indoor unit Select outdoor unit

Install wall-mounting Install the support of outdoor unit