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Service Manual
Models: GWH09YD-S6DBA2A
GWH12YD-S6DBA2A
(Refrigerant:R32)
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 GREE+ App Operation Manual.......................................................................................23
6.3 Ewpe Smart App Operation Manual................................................................................24
6.4 Brief Description of Modes and Functions.......................................................................25
Part Ⅱ : Installation and Maintenance ..................................................30

7. Notes for Installation and Maintenance...........................................30
8. Installation.................................................................................................................34
8.1 Installation Dimension Diagram.......................................................................................34
8.2 Installation Parts-checking .............................................................................................36
8.3 Selection of Installation Location.....................................................................................36
8.4 Electric Connection Requirement....................................................................................36
8.5 Installation of Indoor Unit.................................................................................................36
8.6 Installation of Outdoor Unit..............................................................................................39
8.7 Vacuum Pumping and Leak Detection............................................................................40
8.8 Check after Installation and Test Operation....................................................................40
8.9 Wired Controller..............................................................................................................41
Table of Contents
Service Manual
9. Maintenance.............................................................................................................51
9.1 Error Code List................................................................................................................51
9.2 Procedure of Troubleshooting.........................................................................................58
9.3 Maintenance Method for Normal Malfunction..................................................................73
10. Exploded View and Parts List...............................................................75
10.1 Indoor Unit.....................................................................................................................75
10.2 Outdoor Unit..................................................................................................................78
11. Removal Procedure........................................................................................80
11.1 Removal Procedure of Indoor Unit................................................................................80
11.2 Removal Procedure of Outdoor Unit.............................................................................85
Appendix:.........................................................................................................................91
Appendix 1: Reference Sheet of Celsius and Fahrenheit.....................................................91
Appendix 2: Configuration of Connection Pipe......................................................................91
Appendix 3: Pipe Expanding Method....................................................................................92
Appendix 4: List of Resistance for Temperature Sensor.......................................................93
Table of Contents
Service Manual
Part Ⅰ : Technical Information

1. Summary
Indoor Unit:
GWH09YD-S6DBA2A/I
GWH12YD-S6DBA2A/I
Outdoor Unit:
GWH09YD-S6DBA2A/O
GWH12YD-S6DBA2A/O
Remote Controller:
YAG1FB YAG1FB3(WiFi)
FAN
- +
MODE
ON/OFF
Technical Information 1
Service Manual
2. Specifications
2.1 Specification Sheet
Model GWH09YD-S6DBA2A GWH12YD-S6DBA2A

Product Code CB466000100/CB466000102 CB466000200
Rated Voltage V~ 220-240 220-240
Power
Rated Frequency Hz 50/60 50/60
Supply
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity W 2700 3530
Heating Capacity W 3500 4200
Cooling Power Input W 550 840
Heating Power Input W 745 950
Cooling Power Current A 3.52 5.10
Heating Power Current A 4.63 5.70
Rated Input W 2400 2600
Rated Current A 10.65 12
Air Flow Volume(SH/H/MH/M/ML/L/SL) m3/h 800/720/570/620/560/500/450 800/730/680/630/580/530/430
Dehumidifying Volume L/h 0.8 1.40
EER W/W 4.91 4.20
COP W/W 4.70 4.42
SEER W/W 8.50 8.50
HSPF W/W / /
2
Application Area m 12-18 16-24
Model of indoor unit GWH09YD-S6DBA2A/I GWH12YD-S6DBA2A/I
Indoor Unit Product Code CB466N00100/CB466N00102 CB466N00200
Fan Type Cross-flow Cross-flow
Diameter Length(DXL) mm Φ106X706 Φ106X706
Fan Motor Cooling Speed r/min 1200/1100/1030/960/890/820/750/500 1200/1100/1030/960/890/820/750/500
Fan Motor Heating Speed r/min 1300/1200/1120/1040/960/880/800/- 1300/1200/1120/1040/960/880/800/-
Output of Fan Motor W 60 60
Fan Motor RLA A 0.09 0.09
Fan Motor Capacitor μF / /
Input of Heater W / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Φ7 Φ7
Indoor Unit Row-fin Gap mm 2-1.4 2-1.4
Coil Length (LXDXW) mm 715X25.4X304.8 715X25.4X304.8
Swing Motor Model MP35CJ/MP24HF MP35CJ/MP24HF
Output of Swing Motor W 2.5/1.5 2.5/1.5
Fuse A 3.15 3.15
Sound Pressure Level (SH/H/MH/M/ML/L/
dB (A) 43/41/38/36/33/31/18 46/43/41/38/36/34/21
SL)
Sound Power Level (SH/H/MH/M/ML/L/SL) dB (A) 58/51/48/46/43/41/28 58/55/53/50/48/46/33
Dimension (WXHXD) mm 996X301X225 996X301X225
Dimension of Carton Box (LXWXH) mm 1057X377X307 1057X377X307
Dimension of Package (LXWXH) mm 1060X380X322 1060X380X322
Net Weight kg 13 13.5
Gross Weight kg 16 16.5
2 Technical Information
Service Manual
Model of Outdoor Unit GWH09YD-S6DBA2A/O GWH12YD-S6DBA2A/O

Outdoor Unit Product Code CB466W00100 CB466W00200
ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR
Compressor Manufacturer/Trademark
CO., LTD CO., LTD
Compressor Model QXFT-B123zE170A QXFT-B123zE170A
Compressor Oil FW68DA FW68DA/equivalent
Compressor Type Rotary Rotary
L.R.A. A 20 35
Compressor RLA A 7.9 7.9
Compressor Power Input W 1230 1230
Overload Protector / /
Throttling Method Electron expansion valve Electron expansion valve
o
Operation Temp C 16~30 16~30
o
Ambient Temp (Cooling) C -18~54 -18~54
o
Ambient Temp (Heating) C -30~24 -30~24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Ф7 Ф7.94
Rows-fin Gap mm 2.5-1.4 2.5-1.4
Coil Length (LXDXW) mm 763X57X550 783X57X550
Fan Motor Speed rpm 900 850
Output of Fan Motor W 30 30
Outdoor Unit Fan Motor RLA A 0.24 0.24
Fan Motor Capacitor μF / /
3
Air Flow Volume of Outdoor Unit m /h 2400 2400
Fan Type Axial-flow Axial-flow
Fan Diameter mm Ф438 Ф438
Defrosting Method Automatic Defrosting Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IPX4 IPX4
Permissible Excessive Operating
MPa 4.3 4.3
Pressure for the Discharge Side
Permissible Excessive Operating
MPa 2.5 2.5
Pressure for the Suction Side
Sound Pressure Level (H/M/L) dB (A) 53/-/- 54/-/-
Sound Power Level (H/M/L) dB (A) 62/-/- 62/-/-
Dimension (WXHXD) mm 899X596X378 899X596X378
Dimension of Carton Box (LXWXH) mm 945X417X630 945X417X630
Dimension of Package (LXWXH) mm 948X420X645 948X420X645
Net Weight kg 44.5 45.5
Gross Weight kg 47.5 48.5
Refrigerant R32 R32
Refrigerant Charge kg 1 1
Length m 5 5
Gas Additional Charge g/m 20 20
Outer Diameter Liquid Pipe mm Ф6 Ф6
Connection
Outer Diameter Gas Pipe mm Ф9.52 Ф9.52
Pipe
Max Distance Height m 10 20
Max Distance Length m 15 40
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

24K
Cooling
Cooling Heating
Heating
14 14
12 12
10 10
Current(A)
Current(A)
8 8
6 6
4 4 Condition
Condition
Indoor:DB 20°C
Indoor:DB27°C WB19°C
2 2 Indoor air flow: Super High
Indoor air flow: Super High
Pipe length:5m
Pipe length:5m
0 0
0 20 40 60 80 100 120 0 20 40 60 80 100 120
Compressor Frequency(Hz) Compressor Frequency(Hz)
2.3 Capacity Variation Ratio According to Temperature
Cooling Heating
110
120
100
110
100
90
Capacity ratio(%)
90
Capacity ratio(%)
80 80
70
70 Condition
60 Indoor:DB 20°C
Condition Indoor air flow:Super High
Indoor:DB 27°C WB19°C 50 Pipe length:5m
60 Indoor air flow: Super High
Pipe length:5m 40
-30 -4 5 17.6 32 44.6 50
50
21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 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

condition(°C) connecting indoor and temperature of heat Fan speed of Fan speed of
Model
(DB/WB) outdoor unit exchanger indoor unit outdoor unit
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
27/19 35/24 9K 0.9 to 1.1 12 to 14 75 to 37 Super High High
27/19 35/24 12K 0.9 to 1.1 12 to 14 75 to 37 Super High High
Heating:
Rated heating Pressure of gas pipe Inlet and outlet pipe
condition(°C) connecting indoor and temperature of heat Fan speed of Fan speed of
Model
(DB/WB) outdoor unit exchanger indoor unit outdoor unit
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
20/- 7/6 9K 2.8 to 3.0 70 to 35 2 to 4 Super High High
20/- 7/6 12K 2.8 to 3.0 70 to 35 2 to 4 Super High High
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
60 60
12K 58
50 Heating
Noise dB(A)
56
Noise dB(A)
40 54
Cooling
52
30 50
9K 48
20
46
20 30 40 50 60 70 80 90 100
10
Super Middle Middle Super Compressor frequency(Hz)
High High High Middle Low Low Low
Indoor fan motor rotating speed
Service Manual
3. Outline Dimension Diagram

3.1 Indoor Unit
09/12K
W D
H
117 685 194
Φ55 Φ55
38 38
190 140
Unit:mm
Model W H D
09K/12K 996 301 225
Service Manual
3.2 Outdoor Unit

GWH09YD-S6DBA2A/O GWH12YD-S6DBA2A/O
838 303
596
899 378
550
Unit:mm
354
Service Manual
4. Refrigerant System Diagram 6HUYLFH0DQXDO
5HIULJHUDQW6\VWHP'LDJUDP
INDOOR UNIT OUTDOOR UNIT
GAS SIDE
3-WAY VALVE
4-Way valve
Discharge
HEAT
EXCHANGE
(EVAPORATOR) Suction Accumlator
COMPRESSOR
D
HEAT
EXCHANGE
(CONDENSER)
LIQUID SIDE Intercooler
Strainer Electron Strainer Strainer

2-WAY VALVE Capillary Strainer
expansion
valve
COOLING
HEATING
&RQQHFWLRQSLSHVSHFL¿FDWLRQ
Connection pipe specification:
/LTXLGPP*DVPP)RU.7$
Liquid pipe:1/4" (6mm)
/LTXLGPP*DVPP)RU.7%.
Gas pipe: 3/8" (9.52mm)
7HFKQLFDO,QIRUPDWLRQ
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 / /
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.
● Indoor Unit
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Service Manual
● Outdoor Unit
GWH12YD-S6DBA2A/O(CB466W00200)
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These wiring 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 16 3 17 4
No. Name
1 Neutral wire
2 Needle stand for indoor fan
3 Auto button
14 5 4 Up&down swing motor
5 left&right swing motor
6 Interface of temperature sensor
13 18 7
Terminal for display board
connection
8 Terminal of jumper cap
9 Communication wire
Connect earthing wire(only for
10
the mode with this function)
6 11 Fuse
12 Live wire interface
Interface of health function
13
neutral wire
10 Interface of health function live
7 14
wire
12 15 Detecting plate(WIFI )
Connect earthing wire(only for
16
the mode with this function)
11 Interface of gate control (only
17
for the mode with this function)
Wired controller (only for the
18
mode with this function)
9 8 15
● Bottom view
Service Manual
● Outdoor Unit
● Top view
No. Name
2 3 4 5 6 7 8 9 10 1 Terminal of compressor
Overload Terminal of
2
compressor
1 Terminal of temperature
3
sensor
Te r m i n a l o f e l e c t r o n i c
4
expansion valve 1
Te r m i n a l o f e l e c t r o n i c
5
expansion valve 2
Low-temperature cooling
11 6
sensor
7 Terminal of outdoor fan
Terminal of chassis electric
8
heater
9 Terminal of 2-way valve
12 10 Terminal of 4-way valve
Communication wire with
13 11
indoor unit
14 12 Live wire terminal
13 Earthing wire terminal
14 Neutral wire terminal
● Bottom view
Service Manual
6. Function and Control

6.1 Remote Controller Introduction
Buttons on Remote Controller
1. ON/OFF button
1. ON/OFF button
Press this button to turn on the unit. Press this button again to turn off the unit.
Press this button to turn on the unit. Press this button again to turn off the unit.
YAG1FB
2. MODE button
2. MODE button
Each time you press this button,a mode is selected in a sequence that goes from AUTO, COOL, DRY, FAN, and HEAT *,
Each time you press this button,a mode is selected in a sequence that goes from AUTO, COOL, DRY, FAN, and HEAT *,
as the following:
as the following:
* Note: Only for models with heating function.
* Note: Only for models with heating function.
AUTO COOL DRY FAN HEAT*
AUTO COOL DRY FAN HEAT*
Fan Swing
Fan Swing ▲
▲ ▲
▲
Fan Swing
Fan Swing
Swing
Swing
Fan Swing
Fan Swing ▲
▲
▲
▲
Fan Swing
Fan Swing
3. FAN button
3. FAN button
This button is used for setting Fan Speed in the sequence that goes from AUTO, , to , then back to Auto.
This button is used for setting Fan Speed in the sequence that goes from AUTO, , to , then back to Auto.
Auto
Auto
Introduction
4.▲ /
▲
▲
button
for Icons on Display Screen
4.▲ / button
Press ▲ / button to increase/decreaseset temperature.In AUTO mode,set temperature is not adjustable.
▲
Press ▲ / button to increase/decreaseset temperature.In AUTO mode,set temperature is not adjustable.
▲
▲
▲
▲
▲
When setting Timer On or Timer Off, press ▲ or ▼ button to adjust the time. (See TIMER Button for setting details)
When setting Timer On or Timer Off, press ▲ or ▼ button to adjust the time. (See TIMER Button for setting details)
5. SWING button
5. SWING button
Press this button to set up & down swing angle.
Press this button to set up & down swing angle.
no display
no display
(horizontal louvers
(horizontalstops at current position)
louvers
stops at current position)
Introduction for Buttons on Remote Controller

6. SLEEP button
6. SLEEP button
Note:
●This is a general use remote controller, it could be used for the air conditioners with multifunction; For some function, which the model
dont have, if press the corresponding button on the remote controller that the unit will keep the original running status.
● After putting through the power, the air conditioner will give out a sound.Operation indictor " " is ON (red indicator). After that, you can
operate the air conditioner by using remote controller.
● Under on status, pressing the button on the remote controller, the signal icon " " on the display of remote controller will blink once and
the air conditioner will give out a “de” sound, which means the signal has been sent to the air conditioner.
● Under off status, set temperature and clock icon will be displayed on the display of remote controller (If timer on, timer off and light
functions are set, the corresponding icons will be displayed on the display of remote controller at the same time); Under on status, the
display will show the corresponding set function icons.
1. ON/OFF button
Press this button, the unit will be turned on, press it once more, the unit will be turned off. Sleep function will be canceled, while unit off.
ATUO
ATUO
ATUO
Service Manual
2. FAN button
Low
Press this button, Auto, Low, fan Medium-low
Medium-low, fan Medium
Medium, Medium-high, High fan
speed canMedium-high fan
be circularly selected. High
After fan
powered on, Auto fan speed
is default. Under DRY mode, Low fan speed only can be set up.
ATUO
Note: It’s Low fan speed
under Dry mode.
Low fan Medium-low fan Medium fan Medium-high fan High fan
3. MODE button
Press this button, Auto, Cool, Dry, Fan, Heat mode can be selected circularly. Auto mode is default while power on. Under Auto mode, the
temperature will not be displayed;Under Heat mode, the initial value is 28°C( 82°F);Under other modes, the initial value is 25°C(77°F).
(only for cooling and heating unit.

As for cooling only unit, it won’t
have any action when it receives
AUTO COOL DRY FAN HEAT the signal of heating operation.)
4. +/- button
● Presetting temperature can be increased.
Press this button,the temperature can be set up, continuously press this button and hold for two seconds, the relative contents can quickly
change,until unhold this button and send the order that the °C(°F) signal will be displayed all the time.The temperature adjustment is
unavilable under the Auto mode, but the order can be sent by if pressing this button.Temperature of Celsius degree setting:16-30;for
Fahrenheit degree setting:61-86.
AUTO
● Presetting temperature COOL
can be decreased. DRY FAN HEAT
Press this button, the temperature can be set up, continuously press this button and hold for two seconds, the relative contents can quickly
change,until unhold this button and send the order that the°C(°F) signal will be displayed all the time.The temperature adjustment is
unavailable under the Auto mode,but the order can be sent by if pressing this button.
5. TURBO button
Under Cool or Heat mode,press this button can turn on or turn off the Turbo function.After the Turbo function turned on, the signal of Turbo
will display. The signal will be automatically cancelled if changing the mode or fan speed.
6. button
Press this button to set left & right swing angle cycling as below:
OFF OFF
OFF
OFF
7. button
Press this button to set swing angle,which circularly changes as below:
OFF OFF
OFF
OFF
This remote controller is universal. If it receives threes kinds of following
OFF status,the swing angle will remain origial.
OFF
OFF
If guide louver is stopped when it is swinging up and down,it will remain its present position.
OFF OFF
indicates guide louver swings back and forth in the five places,as shown in the figure.
8. CLOCK button
Press this button, the clock can be set up,signal blink and display.Within
OFF 5OFF
seconds, the value can be adjusted by pressing + or - button,
if continuously press this button for 2 seconds above,in every 0.5 seconds, the value on ten place of Minute will be increased 1.During
blinking,repress the Clock button or Confirm button,signal will be constantlyOFF
displayed and it denotes the setting succeeded. After
OFF
powered on, 12:00 is defaulted to display and signal will be displayed.OFF
If there is signal be displayed thatOFF
denotes the current time
value is Clock value, otherwise is Timer value.
9. TIMER ON/TIMER OFF button
● Timer On setting: Signal “ON”will blink and display,signal will conceal,the numerical
OFF section will become the timer on setting status.
During 5 seconds blink,by pressing + or - button to adjust the time value of numerical section,every press of that button,the value will be
increased or decreased 1 minute.Hold pressing + or - button,2 seconds later,it quickly change,the way of change is: During the initial 2.5
seconds,ten numbers change in the one place of minute,then the one place is constant,ten numbers change in the ten splace of minute at
2.5 seconds speed and carry. During 5s blink,press the Timer button,the timer setting succeeds.The Timer On has been set up,repress the
timer button,theTimer On will be canceled. Before setting theTimer,please adjust the Clock to the current actual time.
● One press this key to enter into TIMER OFF setup, in which case the TIMER OFF icon will blink. The method of setting is the sameas for
TIMER ON.
Service Manual
10. TEMP button

Press this button, you can see indoor set temperature, indoor ambient temperature or outdoor ambient temperature on indoor unit’s
display. The setting on remote controller is selected circularly as below:
no display
When selecting " " with remote controller or no display, temperature indicator on indoor unit displays set temperature; When selecting
" " with remote controller,temperature indicator on indoor unit displays indoor ambient temperature; When selecting " " with remote
controller, temperature indicator on indoor unit displays outdoor ambient temperature. 3s later it will return to the setting temprature or it
depends on the other received signal within 3s.
Attention: When displaying the outdoor ambient, the displaying range is 32-99°F and 0-60°C.When it goes beyond the range, it keeps the
threshold data (the smallest—0°C or 32°F and the largest 99°F or 60°C).
Warm tips: When operating buttons on the cover please make sure the cover is closed completely.
11. / button(This function is only available for some models)
Press this button to achieve the on and off of healthy and scavenging functions in operation status.Press this button for the first
time to start scavenging function;LCD displays“ ”.Press the button for the second time to start healthy and scavenging functions
simultaneously;LCD displays“ ”and “ ” .Press this button for the third time to quit healthy and scavenging functions simultaneously.
Press the button for the fourth time to start healthy function; LCD display“ ” .Press this button again to repeat the operation above.
12. I FEEL button
Press this button once, to turn on the I FEEL function, then the figure of "I FEEL" will be displayed, after every press of other function
button, every 200ms to send I FEEL once, after this function started,the remote control will send temperature to the main un it in every 10
minutes.When repress this button, this function will be turned off.
13. LIGHT button
Press this button at unit On or Off status,Light On and Light Off can be set up.After powered on, Light On is defaulted.
14. X-FAN button
Pressing X-FAN button in COOL or DRY mode,the icon is displayed and the indoor fan will continue operation for 2 minutes in order
to dry the indoor unit even though you have turned off the unit.After energization, X-FAN OFF is defaulted.X-FAN is not available in
AUTO,FAN or HEAT mode.
15. QUIET button
Press this button,the Quiet status is under the Auto Quiet mode (display" " and “Auto”signal ) and Quiet mode(display " " singal) and
Quiet OFF(there is no signal of " " displayed),after powered on,the Quiet OFF is defaulted. Under the Quiet mode (Display " "signal),
the fan speed is not available.
16. SLEEP button
●Press this button, can select Sleep 1 ( ), Sleep 2 ( ),Sleep 3 ( ) and cancel the Sleep, circulate between these, after
electrified, Sleep Cancel is defaulted.
●Sleep 1 is Sleep mode 1, in Cool, Dehumidify modes: sleep status after run for one hour, the main unit setting temperature will increase
1°C(1ºF~2ºF), 2 hours,setting temperature increased 2°C(3ºF~4ºF), the unit will run at this setting temperature; In Heat mode: sleep status
after run for one hour, the setting temperature will decrease 1°C(1ºF~2ºF), 2 hours, setting temperature will decrease 2°C(3ºF~4ºF), then
the unit will run at this setting temperature.
●Sleep 2 is sleep mode 2, that is air conditioner will run according to the presetting a group of sleep temperature curve.
In Cool mode:
(1) When setting the initial temperature 16~23°C(61ºF~74ºF), after turned on Sleep function, the temperature will be increased 1°C(1ºF~2ºF)
in every hour,after 3°C(5ºF~6ºF) the temperature will be maintained, after 7hours,the temperature will be decreased 1°C(1ºF~2ºF), after
that the unit will keep on running under this temperature;
in every hour,after 2°C(3ºF~4ºF) the temperature will be maintained, after 7hours,the temperature will be decreased 1°C(1ºF~2ºF) , after
in every hour, after 1°C(1ºF~2ºF) the temperature will be maintained, after 7hours,the temperature will be decreased 1°C(1ºF~2ºF) , after
(4) When setting the initial temperature 30°C(86ºF), under this temperature setting, after 7hours, the temperature will be decreased
1°C(1ºF~2ºF), after that the unit will keep on running under this temperature;
In Heat mode:
(1) Under the initial presetting temperature 16°C(61ºF), it will run under this setting temperature all along.
(2) Under the initial presetting temperature17~20°C(62ºF~68ºF), after Sleep function started up, the temperature will decrease 1°C(1ºF~2ºF)
in every hour, after 1°C(1ºF~2ºF) decreased, this temperature will be maintained.
(3) Under the initial presetting temperature 21~27°C(69ºF~81ºF), after Sleep function started up, the temperature will decrease
1°C(1ºF~2ºF) in every hour,after 2°C(3ºF~4ºF) decreased, this temperature will be maintained.
(4) Under the initial presetting temperature 28~30°C(82ºF~86ºF), after Sleep function started up, the temperature will decrease
1°C(1ºF~2ºF) in every hour, after 3°C(5ºF~6ºF) decreased, this temperature will be maintained.
Service Manual
●Sleep 3- the sleep curve setting under Sleep mode by DIY:

(1) Under Sleep 3 mode, press "Turbo" button for a long time, remote control enters into user individuation sleep setting status, at this
time, the time of remote control will display "1hour ", the setting temperature "88" will display the corresponding temperature of last setting
sleep curve and blink (The first entering will display according to the initial curve setting value of original factory);
(2) Adjust "+" and "-" button, could change the corresponding setting temperature, after adjusted, press "Trubo "button for confirmation;
(3) At this time, 1hour will be automatically increased at the timer postion on the remote control, (that are "2hours" or "3hours" or "8hours "),
the place of setting temperature "88" will display the corresponding temperature of last setting sleep curve and blink;
(4) Repeat the above step (2)~(3) operation, until 8hours temperature setting finished, sleep curve setting finished, at this time, the remote
control will resume the original timer display;temperature display will resume to original setting temperature.
●Sleep3- the sleep curve setting under Sleep mode by DIY could be inquired:
The user could accord to sleep curve setting method to inquire the presetting sleep curve, enter into user individuation sleep setting
status, but do not change the temperature, press "Turbo" button directly for confirmation.
Note: In the above presetting or enquiry procedure, if continuously within10s, there is no button pressed, the sleep curve setting status will
be automatically quit and resume to display the original displaying. In the presetting or enquiry procedure, press "ON/OFF" button, "Mode"
button, "Timer" button or "Sleep" button, the sleep curve setting or enquiry status will quit similarly.
17. About X-FAN function
This function indicates that moisture on evaporator of indoor unit will be blowed after the unit is stopped to avoid mould.
(1)Having set X-FAN function on: After turning off the unit by pressing ON/OFF button indoor fan will continue running for about 2 min. at
low speed. In this period, press X-FAN button to stop indoor fan directly.
(2)Having set X-FAN function off: After turning off the unit by pressing ON/OFF button, the complete unit will be off directly.
18. About AUTO RUN
When AUTO RUN mode is selected, the setting temperature will not be displayed on the LCD, the unit will be in accordance with the room
temp. automatically to select the suitable running method and to make ambient comfortable.
19. About turbo function
If start this function, the unit will run at super-high fan speed to cool or heat quickly so that the ambient temp. approachs the preset temp.
as soon as possible.
20. About lock
Press + and - buttons simultaneously to lock or unlock the keyboard. If the remote controlleris locked, the icon will be displayed on it, in
which case, press any button, the mark will flicker for three times. If the keyboard is unlocked, the mark will disappear.
21. About swing up and down
(1)Press swing up and down button continuously more than 2s,the main unit will swing back and forth from up to down, and then loosen
OFF OFF
the button, the unit will stop swinging and present position of guide louver will be kept immediately.
(2)Under swing up and down mode, when the status is switched from off to , if press this button again 2s later, status will switch
to off status directly; if press this button again within 2s,the change of swing status will also depend on the circulation sequence stated
above.
22. About swing left and right
(1)Press swing left and right button continuously more than 2s,the main unit will swing back and forth from OFF
left to right, and then loosen the OFF
button, the unit will stop swinging and present position of guide louver will be kept immediately.
(2)Under swing left and right mode, when the status is switched from off to , if press this button again 2s later, status will switch
to off status directly; if press this button again within 2s,the change of swing status will also depend on the circulation sequence stated
above.
23. About switch between Fahrenheit and Centigrade
Under status of unit off, press MODE and - buttons simultaneously to switch °C and °F. OFF OFF
24. Combination of " TEMP" and "CLOCK" buttons : About Energy-saving Function
Press “TEMP” and “CLOCK” simultaneously in COOL mode to start energy-saving function.Nixie tube on the remote controller displays “SE”.
Repeat the operation to quit the function.
25. Combination of " TEMP" and "CLOCK" buttons : About 8°C(46ºF) Heating Function
Press “TEMP” and “CLOCK” simultaneously in HEAT mode to start 8°C(46ºF) Heating Function.Nixie tube on the remote controller
displays" "and a selected temperature of “8°C” (46°F if Fahrenheit is adopted). Repeat the operationOFF to quit the function. OFF
26. About Auto Quiet function
When auto quiet function is selected:
(1)Under cooling mode: indoor fan operates at notch 4 speed. 10 minutes later or when indoor ambient temperature≤28°C(82ºF), indoor
fan will operate at notch 2 speed or quiet mode according to the comparison between indoor ambinet temperature and set temperature.
(2)Under heating mode: indoor fan operates at notch 3 speed or quiet mode according to the comparison between indoor ambient
temperature and set temperature.
(3)Under dry, fan mode: indoor fan operates at quiet mode.
(4)Under auto mode: the indoor fan operates at the auto quiet mode according to actual cooling, heating or fan mode.
27. About Sleep function
Under the Fan and Auto mode, the Sleep function cannot be set up, under Dehumidify mode, only Sleep 1 can be selected.Select and
enter into any kind of Sleep mode, the Quiet function will be attached and stared, different Quiet status could be optional and turned off.
Service Manual
1
28.WIFI Function
Press "MODE" and "TURBO" button simultaneously to turn on or turn off WIFI function. When WIFI function is turned on, the
" " icon will be displayed on remote controller; Long press "MODE" and "TURBO" buttons simultaneously for 10s, remote 4
controller will send WIFI reset code and then the WIFI function will be turned on. WIFI function is defaulted ON after1 energization 2
of the remote controller.(This function only applicable for some models. )
3
Operation Guide 5
4
1 2
1. General operation
3
(1)After powered on, press ON/OFF button, the unit will start to run. (Note: When it is powered on, the
guide louver of main unit will close automatically.) 5
(2)Press MODE button, select desired running mode.
(3)Pressing + or - button, to set the desired temperature (It is unnecessary to set the temp. at AUTO
mode.)
(4)Pressing FAN button, set fan speed, can select AUTO FAN,LOW, MEDIUM-LOW, MEDIUM, MEDIUM-
4
HIGH and HIGH.
(5)Pressing and button, to select the swing.
3
2. Optional operation 4
2
(1)Press SLEEP button, to set sleep.
4
(2)Press TIMER ON and TIMER OFF button, can set the scheduled timer on or timer off. 2
(3)Press LIGHT button, to control the on and off of the displaying part of the unit (This function may be not 3 1
available for some units). 3 1
(4)Press TURBO button, can realize the ON and OFF of TURBO function.
Replacement of Batteries in Remote Controller

1. Press the back side of remote controller marked with " ",as shown in the fig,and then push out the reinstall
cover of battery box along the arrow direction. battery
2. Replace two 7# (AAA 1.5V) dry batteries, and make sure the position of "+" polar and "-" polar are reinstall battery
correct. reinstall
remove
3. Reinstall the cover of battery box.
Note: remove
● During operation, point the remote control signal sender at the receiving window on indoor unit. Cover of
Cover of battery box
● The distance between signal sender and receiving window should be no more than 8m, and there
should be no obstacles between them.
● Signal may be interfered easily in the room where there is fluorescent lamp or wireless telephone; Cover of battery box
remote controller should be close to indoor unit during operation.
● Replace new batteries of the same model when replacement is required.
● When you don’t use remote controller for a long time, please take out the batteries.
● If the display on remote controller is fuzzy or there’s no display, please replace batteries.
Service Manual
YAG1FB3(WiFi)
1 ON/OFF button
2 FAN button
3 MODE button
4 +/- button
5 TURBO button
2
2 6 button
5 6
4 7 button
4 11
7
3
3 9
8 8 CLOCK button
10 12
1 13 WiFi
1 9 TIMER ON/
14 16
15 TIMER OFF button
10 TEMP button
11 / button
(before opening cover (after opening cover
12 I FEEL button
1 ON/OFF button 13 LIGHT button
2 FAN button 14 WiFi button
3 MODE button 15 QUIET button
4 +/- button 16 SLEEP button
I feel Set fan speed

Quiet Turbo mode
Send signal
Operation mode
Healthy mode
Auto mode Scavenging functions
8ć heating function
Cool mode Set temperature
Dry mode This is a general remote controller. Some
models have this function while some do
Fan mode not. Please refer to the actual models.
Heat mode X-FAN function
Set time
TIMER ON /TIMER OFF
Clock
Sleep mode Child lock
Up & down swing
Light Left & right swing
Temp. display type
: Set temp. : Indoor ambient temp.
: Outdoor ambient temp.
● This is a general use remote controller, it could be used for the air conditioners with multifunction; For some function, which the
model doesn't have, if press the corresponding button on the remote controller that the unit will keep the original running status.
Service Manual
ATUO
Low fan Medium-low fan Medium fan Medium-high fan High fan
Note:
● It’s Low fan speed under Dry mode.
● X-FAN function：Hold fan speed button for 2s in COOL or DRY mode, the icon “ ” is displayed and the indoor fan will continue
operation for a few minutes in order to dry the indoor unit even though you have turned off the unit. After energization, X-FAN OFF is
defaulted. X-FAN is not available in AUTO, FAN or HEAT mode.
This function indicates that moisture on evaporator of indoor unit will be blowed after the unit is stopped to avoid mould.
● Having set X-FAN function on: After turning off the unit by pressing ON/OFF button indoor fan will continue running for a few minutes. at
low speed. In this period, Hold fan speed button for 2s to stop indoor fan directly.
● Having set X-FAN function off: After turning off the unit by pressing ON/OFF button, the complete unit will be off directly.
AUTO COOL DRY FAN HEAT
Press " + " or " - " button once increase or decrease set temperature 1°C(°F). Holding " + " or " - " button, set temperature on remote
controller will change quickly. On releasing button after setting is finished, temperature indicator on indoor unit will change accordingly.
When setting TIMER ON, TIMER OFF or CLOCK, press " + " or " - " button to adjust time. (Refer to CLOCK, TIMER ON, TIMER OFF
buttons) When setting TIMER ON, TIMER OFF or CLOCK, press " + " or " - " button to adjust time. (Refer to CLOCK, TIMER ON,
TIMER OFF buttons)
OFF
OFF
Service Manual
Note:
Outdoor temperature display is not available for some models. At that time, indoor unit receives " " signal, while it displays indoor
set temperature.
Press this button once, to turn on the I FEEL function, then the figure of "I FEEL"will be displayed, after every press of other function button,
every 200ms to sendI FEEL once, after this function started, the remote controller will send temperatureto the main un it in every 10 minutes.
When repress this button, this function will beturned off. When I FEEL function is turned on, the remote controller should be put within the
area where indoor unit can receive the signal sent by the remote controller.
WiFi button
Press " WiFi " button to turn on or turn off WiFi function. When WiFi function is turned on, the " WiFi " icon will be displayed on remote
controller; Under status of remote controller off, press "MODE" and " WiFi " buttons simultaneously for 1s, WiFi module will restore to
factory default setting.
● This function is only available for some models.
Press this button, the Quiet status is under the Auto Quiet mode (display" "and "Auto" signal) and Quiet mode (display " " singal)
and Quiet OFF (there is no signal of " " displayed), after powered on, the Quiet OFF is defaulted.Under the Quiet mode (Display " "
signal).
The Quiet function is only available for some models.
Press this button, can select Sleep 1 ( ), Sleep 2 ( ), Sleep 3 ( ) andcancel the Sleep, circulate between these, after electrified,
Sleep Cancel is de-faulted.
Sleep 1 is Sleep mode 1, in Cool modes: sleep status after run for one hour, the main unit setting temperature will increase 1℃, 2 hours,
setting temperatureincreased 2℃, the unit will run at this setting temperature; In Heat mode:sleep status after run for one hour, the setting
temperature will decrease 1℃, 2 hours, setting temperature will decrease 2℃, then the unit will run at this settingtemperature.
Sleep 2 is sleep mode 2, that is air conditioner will run according to the presettinga group of sleep temperature curve.
In Cool mode:
(1) When setting the initial temperature 16℃-23℃, after turned on Sleep function,the temperature will be increased 1℃ in every hour,
after 3℃ the temperaturewill be maintained, after 7hours, the temperature will be decreased 1℃, afterthat the unit will keep on running
under this temperature;
after 2℃ the temperaturewill be maintained, after 7hours, the temperature will be decreased 1℃, afterthat the unit will keep on running
after 1℃ the temperature will be maintained, after 7hours, the temperature will be decreased 1℃, afterthat the unit will keep on running
Service Manual
(4) When setting the initial temperature 30℃, under this temperature setting, after 7hours, the temperature will be decreased 1℃, after
that the unit will keep onrunning under this temperature;
In Heat mode:
(1) Under the initial presetting temperature 16℃, it will run under this setting temperature all along.
(2) Under the initial presetting temperature17℃-20℃, after Sleep function started up, the temperature will decrease 1℃ in every hour,
after 1℃ decreased, thistemperature will be maintained.
(3) Under the initial presetting temperature 21℃-27℃, after Sleep function started up, the temperature will decrease 1℃ in every hour,
(4) Under the initial presetting temperature 28℃-30℃, after Sleep function started up, the temperature will decrease 1℃ in every hour,
Sleep 3 - the sleep curve setting under Sleep mode by DIY:
(1) Under Sleep 3 mode, press "Turbo" button for a long time, remote controller enters into user individuation sleep setting status, at this
time, the time of remotecontroller will display "1hour", the setting temperature "88" will display the corr-esponding temperature of last setting
sleep curve and blink (The first enteringwill display according to the initial curve setting value of original factory);
2) Adjust "+" and "-" button, could change the corresponding setting temperature,after adjusted, press "Trubo" button for confirmation;
(3) At this time, 1hour will be automatically increased at the timer postion on the remote controller, (that are "2hours" or "3hours" or "8hours"),
the place of setting temperature "88" will display the corresponding temperature of last settingsleep curve and blink;
(4) Repeat the above step (2)~(3) operation, until 8hours temperature setting finished,sleep curve setting finished, at this time, the remote
controller will resume theoriginal timer display; temperature display will resume to original setting temperature.
Sleep3 - the sleep curve setting under Sleep mode by DIY could be inquired:The user could accord to sleep curve setting method to inquire
the presetting sleepcurve, enter into user individuation sleep setting status, but do not change the temperature, press "Turbo" button directly
for confirmation.
Note: In the above presetting or enquiry procedure, if continuously within10s, thereis no button pressed, the sleep curve setting status will
be automatically quitand resume to display the original displaying. In the presetting or enquiry pr-ocedure, press "ON/OFF" button, "Mode"
button, "Timer" button or "Sleep" button, the sleep curve setting or enquiry status will quit similarly.
Introduction for special function

About AUTO RUN
When AUTO RUN mode is selected, the unit will be in accordance with the room temp. automatically to select the suitable running method
and to make ambient comfortable.
About turbo function
If start this function, the unit will run at super-high fan speed to cool or heat quickly sothat the ambient temp. approachs the preset temp.
as soon as possible.
About lock
Press + and - buttons simultaneously to lock or unlock the keyboard. If the remote co-ntroller is locked , the icon will be displayed on it,
in which case, press any button, the mark will flicker for three times. If the keyboard is unlocked, the mark will disappear.
About swing up and down
1. Press swing up and down button continuously more than 2s, the m ain unit will swingbackand forth from up to down , and then loosen
the button, the unit will stop swingand present position of guide louver will be kept immediately.
2. Under swing up and down mode, when the status is switched from off to , if pressthis button again 2s later, status will switch to off
status directly; If press this buttonagain within 2s, the change of swing status will also depend on the circulation seque-nce stated above.
About swing left and right

1. Press swing left and right button continuously more than 2s, the main unit will swingback and forth from left to right, and then loosen the
button, the unit will stop swingand present position of guide louver will be kept immediately.2. Under swing left and right mode, when the
status is switched from off to , if pressthis button again 2s later, status will switch to off status directly; if press this button again within
2s, the change of swing status will also depend on the circulation sequ-ence stated above.
About switch between Fahrenheit and Centigrade
Under status of unit off, press MODE and - buttons simultaneously to switch ℃ and ℉.
Combination of "TEMP" and "CLOCK" buttons: About Energy - saving Function
Press “TEMP” and “CLOCK” simultaneously in COOL mode to start energy-saving fun-ction. Nixie tube on the remote controller displays
“SE”. Repeat the operation to quitthe function.
Combination of "TEMP" and "CLOCK" buttons: About 8℃ Heating Function
Press “TEMP” and “CLOCK” simultaneously in HEAT mode to start 8℃ Heating FunctionNixie tube on the remote controller displays “ ”
and a selected temperature of “8℃”.(46℉ if Fahrenheit is adopted). Repeat the operation to quit the function.
About Quiet function
When quiet function is selected:
1. Under cooling mode: indoor fan operates at notch 4 speed. 10 minutes later or whenindoor ambient temperature≤28℃, indoor fan will
operate at notch 2 speed or quietmode according to the comparison between indoor ambinet temperature and set tem-perature.
2. Under heating mode: indoor fan operates at notch 3 speed or quiet mode accordingto the comparison between indoor ambient
temperature and set temperature.
3. Under dry, fan mode: indoor fan operates at quiet mode.
4. Under auto mode: the indoor fan operates at the auto quiet mode according to actual cooling, heating or fan mode.
About Sleep function
Under the Fan、Dry and Auto mode, the Sleep function cannot be set up, Select and enter into any kind of Sleep mode, the Quiet function
will be attached and stared, different Quiet status could be optional and turned off.
Service Manual
3
1. After powered on, press ON/OFF button, the unit will start 5
2
to run. (Note: When it is powered on, the guide louver of
main unit will close automatically.) 1
2. Press MODE button, select desired running mode. WiFi
3. Pressing + or - button, to set the desired temperature.

4. Pressing FAN button, set fan speed, can select AUTO FAN,
LOW, MEDIUM-LOW, MEDIUM, MEDIUM-HIGH and HIGH.
5. Pressing and button, to select the swing.
1. Press SLEEP button, to set sleep.

2. Press TIMER ON and TIMER OFF button, can set the 2
scheduled timer on or timer off.

3. Press LIGHT button, to control the on and off of the 3 WiFi 1
displaying part of the unit (This function may be not

available for some units).
4. Press TURBO button, can realize the ON and OFF of
TURBO function.
battery
1. Press the back side of remote controller marked
reinstall
the cover of battery box along the arrow direction.
2. Replace two 7# (AAA 1.5V) dry batteries, and remove
make sure the position of "+" polar and "-" polar
are correct.
3. Reinstall the cover of battery box.
Cover of battery box
● During operation, point the remote control signal sender at the receiving
window on indoor unit.
● The distance between signal sender and receiving window should be no
more than 8m, and there should be no obstacles between them.
● Signal may be interfered easily in the room where there is fluorescent lamp
or wireless telephone; remote controller should be close to indoor unit during
operation.
● Replace new batteries of the same model when replacement is required.
● When you don’t use remote controller for a long time, please take out the
batteries.
● If the display on remote controller is fuzzy or there’s no display, please
replace batteries.
Service Manual
6.2 GREE+ App Operation Manual
Control Flow Chart
Internet
Gree Cloud
Gree
intelligent Home Wi-Fi Cellular/
home Other Wi-FI
appliances
Home wireless router
Home Wi-Fi
GREE+ APP
Operating Systems
Requirement for User's smart phone:
iOS system Android system

Support iOS7.0 and Support Android 4.0 and
above version above version
Download and installation
GREE+ App Download Linkage
Scan the QR code or search "GREE+" in the application market to download and install it. When "GREE+" App is installed, register the
account and add the device to achieve long-distance control and LAN control of Gree smart home appliances.
For more information, please refer to "Help" in App.
Service Manual
6.3 Ewpe Smart App Operation Manual
Control Flow Chart
Internet
Cloud
intelligent Home Wi-Fi Cellular/

home Other Wi-FI
appliances
Home wireless router

Home Wi-Fi
APP
Operating Systems
Requirement for User's smart phone:
iOS system Android system

Support iOS7.0 and Support Android 4.0 and
above version above version
Download and installation
App Download Linkage
Scan the QR code or search "Ewpe Smart" in the application market to download and install it. When "Ewpe Smart" App is installed,
register the account and add the device to achieve long-distance control and LAN control of smart home appliances.
For more information, please refer to "Help" in App.
Service Manual
6.4 Brief Description of Modes and Functions

1. Temperature Parameters
◆ Indoor preset temperature (Tpreset)
◆ Indoor ambient temperature (T amb.)
2. Basic Functions
Once energized, in no case should the compressor be restarted within less than 3 minutes. In the situation that memory function is available,
for the first energization, if the compressor is at stop before de-energization, the compressor will be started without a 3-minute lag; if the com-
pressor is in operation before de-energization, the compressor will be started with a 3-minute lag; and once started, the compressor will not be
stopped within 6 minutes regardless of changes in room temperature.
(1)Cooling Mode
① The condition and process of cooling
If Tamb.≥Tpreset cooling mode will act, the compressor and outdoor fan will run, and the indoor fan will run at the set speed.
If Tamb.≤Tpreset-2°C(3.6°F), the compressor will stop, the outdoor fan will delay 30 seconds to stop, and the indoor fan will run at the set speed.
If Tpreset-2°C(3.6°F)<Tamb.<Tpreset , the unit will keep running in the previous mode.
When 0≤ Tpreset-Tamb. ＜ 2°C(3.6°F), if indoor fan speed is high, it will turn to medium fan speed; if indoor fan speed is medium or low, it will keep
the same;(this condition will be valid only when the compressor is operating); if indoor fan speed is super high, it will keep the same;
When Tamb.-Tpreset≥1°C(1.8°F), the fan speed will return to set fan speed;
In this mode, the reversal valve will not be powered on and the temperature setting range is 16~30°C(68~86°F).
Tamb. Start cooling

Tpreset
Original operating status
Tpreset –2 ˚C
Stop cooling
≥ 6 min. ≥ 3 min. ≥ 6 min.
Compressor 30S 30S
Outdoor fan
Indoor fan Set fan spee d

② Protection function
Run Stop
◆ Overcurrent protection
If total current is high, the compressor will run in limited frequency. If total current is too high , the compressor will stop, the outdoor fan will
delay 30 seconds to stop, indoor unit will display E5 and out door yellow light will blink 5 times.
◆ Antifreezing protection
When the antifreezing protection is detected, the compressor will stop, the outdoor fan will stop after 30 seconds, and the indoor fan and swing
motor will keep running in the original mode. When antifreezing protection is eliminated and the compressor has stopped for 3 minutes, the
compressor will resume running in the original mode.
During antifreeze protection
Compressor 3 min
30S
Outdoor fan
Indoor fan Preset speed
Run Stop
(2) Dehumidifying Mode
① Working conditions and process of dehumidifying
If Tamb.>Tpreset, the unit will enter cooling and dehumidifying mode, in which case the compressor and the outdoor fan will operate and the indoor
fan will run at low speed.
If Tpreset-2°C(3.6°F)≤Tamb.≤Tpreset, the compressor remains at its original operation state.
If Tamb.< Tpreset-2°C(3.6°F), the compressor will stop, the outdoor fan will stop with a time lag of 30s, and the indoor fan will operate at low speed.
② Protection function
Protection is the same as that under the cooling mode.
(3) Heating Mode
① The condition and process of heating
If Tamb.≤Tpreset+2°C(3.6°F), heating mode will act, the compressor, outdoor fan and reversal valve will run, the indoor fan will delay 3min to stop at
the latest
If Tpreset +2°C(3.6°F)<Tamb.<Tpreset +5°C(9°F),the unit will keep running in the original mode.
If Tamb.≥Tpreset+5°C(9°F), the compressor will stop, the outdoor fan will delay 30s to stop and indoor fan will blow 60s at low speed, the fan speed
cannot be shifted within blow residual heat.
◆ In this mode, the temperature setting range is 16 ~30°C(68~86°F).
◆ The air conditioner will adjust the running frequency of the compressor automatically according to the change of ambient temperature.
◆ When the unit is turned off in heating mode, or switched to other mode from heating mode, the four-way valve will be powered off after the
compressor stops.
Installation and Maintenance 25

Service Manual
◆ When compressor is running (not including each malfunction and protection):

a.When outdoor ambient temperature≥20°C(68°F) and indoor fan speed is low or medium, the fan speed will turn to high; if indoor fan speed
is high or super high, it will keep the same.
b.When outdoor ambient temperature≤18°C(64.4°F) , the fan speed will resume set fan speed.
c. When 18°C<outdoor ambient temperature<20°C(68F), it will run at present fan speed (set fan speed or high fan speed); but when first
exiting cold air prevention after entering heating mode, it will run in set fan speed.
Stop heating
Tpreset+5
Original operating status
Tpreset+2
Tamb.
6min. 3min. 6min. Start heating
Compressor 30s 30s
Outdoor fan
60s 60s
Indoor fan <2 min. preset <2 min. preset
wind wind
Reversing valve
Run Stop
② Condition and process of defrost

When duration of successive heating operation is more than 45 minutes, or accumulated heating time more than 90 minutes, and one of the
following conditions is reached, the unit will enter the defrost mode after 3 minutes.
(1). T outdoor ambient ＞ 5°C(41°F), T outdoor tube≤-2°C(28.4°F);
(2) -2°C≤T outdoor ambient ＜ 5°C(41°F),, T outdoor tube≤-6°C(21.2°F);
(3) -5°C≤T outdoor ambient ＜ -2°C(28.4°F), T outdoor tube≤-8°C(17.6°F);
(4)-10°C≤T outdoor ambient ＜ -5°C(23°F);, T outdoor tube-T compensatory ≤ (T outdoor ambient-3°C(5.4°F))
(5)T outdoor ambient ＜ -10°C(14°F), T outdoor tube-T compensatory ≤ (T outdoor ambient-3°C(5.4°F))
(after energizing, T compensatory=0°C(32°F) during the first defrosting; if it is not the first defrosting, T compensatory is confirmed by T out-
door tube of quitting last defrosting: a. when T outdoor tube ＞ 2°C(35.6°F), T compensatory=0°C(32°F); b. when T outdoor tube ≤ 2°C(35.6°F),
Tcompensatory=3°C(37.4°F))
At that time, the indoor fan stops and the compressor stops, and after 30 seconds the outer fan will stop, and then after 30 seconds,the four-
way valve will stop. After 30 seconds, the compressor is initiated for raising the frequency to defrost frequency.When the compressor has
operated under defrost mode for 7.5 minutes, or T outdoor ambient ≥ 10°C, the compressor will be converted to 46Hz operation. After 30
seconds, the compressor will stop. And after another 30 seconds, the four-way valve will be opened, and after 60 seconds, the compressor
and the outer fan will be started, the indoor fan will run under preset cold air prevention conditions, and H1 will be displayed at temperature
display area on the display panel. Defrost frequency is 85Hz.
③ Protection
◆ Cold air prevention
The unit is started under heating mode (the compressor is ON):
① In the case of T indoor amb. <24°C(75.2°F): if T tube≤40°C(104°F) and the indoor fan is at stop state, the indoor fan will begin to run at
low speed with a time lag of 2 minutes. Within 2 minutes, if T tube>40°C(104°F) , the indoor fan also will run at low speed; and after 1-min-
ute operation at low speed, the indoor fan will be converted to operation at preset speed. Within 1-minute low speed operation or 2-minute
nonoperation,if T tube>42°C(107.6°F) , the fan will run at present speed.
② In the case of T indoor amb. ≥24°C(75.2°F): if T tube≤42°C(107.6°F), the indoor fan will run at low speed, and after one minute, the indoor
fan will be converted to preset speed. Within one-minute low speed operation, if T tube>42°C(107.6°F), the indoor fan will be converted to
preset speed.
Note: T indoor amb. indicated in ① and ② refers to, under initially heating mode, the indoor ambient temperature before the command to start
the compressor is performed according to the program, or after the unit is withdrawn from defrost, the indoor ambient temperature before the
defrost symbol is cleared.
(5) Fan Mode
Under the mode, the indoor fan will run at preset speed and the compressor, the outdoor fan, the four-way valve and the electric heater will
stop.
Under the mode, temperature can be set within a range of 16~30°C(60.8~86°F).
(6)AUTO Mode
① Operation way of AUTO mode
a.When Tambient≥26°C(78.8°F), it will run in cooling mode. The implied set temperature is 25°C(77°F) (note: the set temperature sending to
outdoor unit is 25°C(77°F)).
b.For heating and cooling unit, when Tambient≤22°C(71.6°F), it will run in heating mode. The implied set temperature is 20°C(68°F);
for cooling only unit, when Tambient≤22(71.6°F)°C, it will run in fan mode and the displayed set temperature is 25°C(77°F).
26 Installation and Maintenance

Service Manual
c.For heating and cooling unit, when 22°C(71.6°F)<Tindoor ambient<26°C(78.8°F) (for cooling only unit, 22°C(71.6°F)<Tindoor
ambient<26°C)(78.8°F), it will keep the original running mode. If the unit is energized for the first time, it will run in fan mode.
② Protection
a. In cooling operation, protection is the same as that under the cooling mode;
b. In heating operation, protection is the same as that under the heating mode;
c. When ambient temperature changes, operation mode will be converted preferentially. Once started, the compressor willremain
unchanged for at least 6 minutes.
(7)Common Protection Functions and Fault Display under COOL, HEAT, DRY and AUTO Modes
① Overload protection
Ttube: measured temperature of outdoor heat exchanger under cooling mode; and measured temperature of indoor heat exchanger under
heating mode.
1) Cooling overload
a.If T tube≤52°C(125.6°F), the unit will return to its original operation state.
b.If T tube≥55°C(131°F), frequency rise is not allowed.
c.If T tube≥58°C(136.4°F), the compressor will run at reduced frequency.
d.If T tube≥62°C(143.6°F), the compressor will stop and the indoor fan will run at preset speed.
2) Heating overload
a.If T tube≤50°C(122°F), the unit will return to its original operation state.
b.If T tube≥53°C(127.4°F), frequency rise is not allowed.
c.If T tube≥56°C(132.8°F), the compressor will run at reduced frequency.
d.If T tube≥60°C(140°F), the compressor will stop and the indoor fan will blow residue heat and then stop.
② Exhaust temperature protection of compressor
If exhaust temperature≥98°C(208.4°F), frequency is not allowed to rise.
If exhaust temperature≥103°C(217.4°F), the compressor will run at reduced frequency.
If exhaust temperature≥110°C(230°F),, the compressor will stop.
If exhaust temperature≤90°C(194°F), and the compressor has stayed at stop for at least 3 minutes, the compressor will resume its operation.
③ Communication fault
If the unit fails to receive correct signals for durative 3 minutes, communication fault can be justified and the whole system will stop.
④ Module protection
Under module protection mode, the compressor will stop. When the compressor remains at stop for at least 3 minutes, the compressor will
resume its operation. If module protection occurs six times in succession, the compressor will not be started again.
⑤ Overload protection
If temperature sensed by the overload sensor is over 115 , the compressor will stop and the outdoor fan will stop with a time lag of 30
seconds. If temperature is below 95 , the overload protection will be relieved.
⑥ DC bus voltage protection
If voltage on the DC bus is below 150V or over 420V, the compressor will stop and the outdoor fan will stop with a time lag of 30 seconds.
When voltage on the DC bus returns to its normal value and the compressor has stayed at stop for at least 3 minutes, the compressor will
resume its operation.
⑦ Faults of temperature sensors
Designation of sensors Faults
Indoor ambient temperature The sensor is detected to be open-circuited or short-circuited for successive 5 seconds
Indoor tube temperature The sensor is detected to be open-circuited or short-circuited for successive 5 seconds
Outdoor ambient temperature The sensor is detected to be open-circuited or short-circuited for successive 30 seconds
The sensor is detected to be open-circuited or short-circuited for successive 30 seconds, and no
Outdoor tube temperature
detection is performed within 10 minutes after defrost begins.
After the compressor has operated for 3 minutes, the sensor is detected to be open-circuited or
Exhaust
short-circuited for successive 30 seconds.
After the compressor has operated for 3 minutes, the sensor is detected to be open-circuited or
Overload
short-circuited for successive 30 seconds.
3. Other Controls
(1) ON/OFF
Press the remote button ON/OFF: the on-off state will be changed once each time you press the button.
(2) Mode Selection:
Press the remote button MODE, then select and show in the following ways: AUTO, COOL, DRY, FAN, HEAT, AUTO.
(3) Temperature Setting Option Button
Each time you press the remote button TEMP+ or TEMP-, the setting temperature will be up or down by 1°C(1.8°F). Regulating Range:
16(60.8°F)~30°C(86°F), the button is useless under the AUTO mode.
(4) Time Switch
You should start and stop the machine according to the setting time by remote control.
(5) SLEEP State Control

Service Manual
1. In cooling mode:
1.1 When the initial set temperature is16-23°C(60.8~73.4°F),the temperature will rise 1°C(1.8°F) by every hour after sleep function is set;the
temperature will not change after rising 3°C(5.4°F) ;after running for 7hours,the temperature will decrease1°C(1.8°F) and it will not change
after that.
1.2 When the initial set temperature is 24-27°C(75.2~80.6°F),the temperature will rise 1°C(1.8°F) by every hour after sleep function is set; the
temperature will not change after rising 2°C(3.6°F) ;after running for 7 hours, the temperature will decrease 1°C(1.8°F) and it will not change
after that.
1.3 When the initial set temperature is 28-29°C(82.4~84.2°F),the temperature will rise 1°C(1.8°F) by every hour after sleep function is set; the
temperature will not change after rising 1°C(1.8°F) ; after running for 7 hours, the temperature will decrease 1°C(1.8°F) and it will not change
after that.
1.4 When the initial set temperature is 30°C(86°F) , the unit will keep on running at this temperature; after running for 7 hours, the temperature
will decrease 1°C(1.8°F) and it will not change after that.
Relationship between set temperature and running time:
Initial Temp. Running time(T)

0(start) 1 2 3 4 5 6 7 8
16 17 18 19 19 19 19 18 18
17 18 19 20 20 20 20 19 19
18 19 20 21 21 21 21 20 20
19 20 21 22 22 22 22 21 21
20 21 22 23 23 23 23 22 22
21 22 23 24 24 24 24 23 23
22 23 24 25 25 25 25 24 24
23 24 25 26 26 26 26 25 25
24 25 26 26 26 26 26 25 25
25 26 27 27 27 27 27 26 26
26 27 28 28 28 28 28 27 27
27 28 29 29 29 29 29 28 28
28 29 29 29 29 29 29 28 28
29 30 30 30 30 30 30 29 29
30 30 30 30 30 30 30 29 29
2. In heating mode:
2.1 When the initial set temperature is 16°C(60.8°F), the unit will keep on running at this temperature;
2.2 When the initial set temperature is 17-20°C(62.6~68°F), the temperature will decrease 1°C(1.8°F) by every hour after sleep function is set;
the temperature will not change after decreasing 1°C(1.8°F);
2.3 When the initial set temperature is 21-27°C(69.8~80.6°F), the temperature will decrease 1°C(1.8°F) by every hour after sleep function is
set; the temperature will not change after decreasing 2°C(3.6°F);
2.4 When the initial set temperature is 28-30°C(82.4~86°F), the temperature will decrease 1°C(1.8°F) by every hour after sleep function is set;
the temperature will not change after decreasing 3°C(5.4°F);
Relationship between set temperature and running time:
Initial Temp. Running time(T)
0(start) 1 2 3 4 5 6 7 8
16 16 16 16 16 16 16 16 16
17 16 16 16 16 16 16 16 16
18 17 17 17 17 17 17 17 17
19 18 18 18 18 18 18 18 18
20 19 19 19 19 19 19 19 19
21 20 19 19 19 19 19 19 19
22 21 20 20 20 20 20 20 20
23 22 21 21 21 21 21 21 21
24 23 22 22 22 22 22 22 22
25 24 23 23 23 23 23 23 23
26 25 24 24 24 24 24 24 24
27 26 25 25 25 25 25 25 25
28 27 26 25 25 25 25 25 25
29 28 27 26 26 26 26 26 26
30 29 28 27 27 27 27 27 27
(6) Indoor Fan Control
Indoor fan could be set at ultra-high, high, medium, low speed by wireless remote controller and operated as that speed.
Auto fan speed could be set as well, indoor fan will operate under auto fan speed as following:

Service Manual
1. Under heating mode: auto speed under heating or auto heating mode:
a. When Tamb.≤Tpreset+1°C(1.8°F), indoor fan will operate at high speed;
b. When Tpreset+1°C(1.8°F)<Tamb.<Tpreset+3°C(5.4°F), indoor fan will operate at medium speed;
c. When Tamb.≥Tpreset+3°C(5.4°F), indoor fan will operate at low speed;
There should be at least 180s operation time during switchover of each speed.
2. Under cooling mode: auto speed under cooling or auto cooling mode:
a. When Tamb.≥Tpreset+2°C(3.6°F), indoor fan will operate at high speed;
b. When Tpreset<Tamb.<Tpreset+2°C(3.6°F), indoor fan will operate at medium speed;
c. When Tamb.≤Tpreset, indoor fan will operate at low speed
There should be at least 210s operation time during switchover of each speed.
(7) Buzzer Control
The buzzer will send a “Di” sound when the air conditioner is powered up or received the information sent by the remote control or there is
a button input, the single tube cooler doesn’t receive the remote control ON signal under the mode of heating mode.
(8) Auto button
If the controller is on, it will stop by pressing the button, and if the controller is off, it will be automatic running state by pressing the button,
swing on and light on, and the main unit will run based on the remote control if there is remote control order.
(9) Up-and-Down Swinging Control
Heating angle O(0°) Cooling angle Heating angle O(0°) Coolin
When power on, the up-and-down motor will firstly move the air
O(0°)
deflector to o counter-clockwise, close the air outlet.
After starting the machine, if you don’t set the swinging functi on, L1
heating mode and auto-heating mode, the up-and-down air deflector L A1 L
will move to D clockwise; under other modes, the up-and-down A air B1 A
deflector will move to L1. If you set the swinging function whenB you start C1 B
the machine, then the wind blade will swing between L and D.CThe air D1 C
deflector has 7 swinging states: Location L, Location A, Location D B, Location C, D
Location D, Location L to Location D, stop at any location between L-D (the included angle between L~D is the same).
The air deflector will be closed at 0 Location, and the swinging is effectual only on condition that setting the swinging order and the inner
fan is running. The indoor fan and compressor may get the power when air deflector is on the default location.
(10) Display
① Operation pattern and mode pattern display
All the display patterns will display for a time when the power on, the operation indication pattern will display in red under standby status.
When the machine is start by remote control, the indication pattern will light and display the current operation mode (the mode light in-
cludes: Cooling, heating and dehumidify). If you close the light key, all the display patterns will close.
② Double-8 display
According to the different setting of remote control, the nixie light may display the current temperature (the temperature scope is from 16°C
(60.8°F)to 30°C(86°F)) and indoor ambient temperature. The set temperature displayed in auto cooling and fan mode is 25°C(77°F) and
the set temperature displayed in auto heating mode is 20°C(68°F). Under heating mode, nixie tube displays H1 or heating indicator is off 0.5s
and blinks 10s in defrosting.(If you set the fahrenheit temperature display, the nixie light will display according to fahrenheit temperature)(11)
Protection function and failure display
E2: Freeze-proofing protection E4: Exhausting protecti on E5: Overcurrent protection E6: Communication failure
F1: Indoor ambient sensor start and short circuit (continuously measured failure in 5s)
F2: Indoor evaporator sensor start and short circuit (continuously measured failure in 5s)
F3: Outdoor ambient sensor start and short circuit (continuously measured failure in 30s)
F4: Outdoor condenser sensor start and short circuit (continuously measured failure in 30s, and don’t measure within 10 minutes after
defrosted)
F5: Outdoor exhausting sensor start and short circuit (continuously measured failure in 30s after the compressor operated 3 minutes)
H3: Overload protection of compressor H5: Module protection PH: High-voltage protection PL: Low-voltage protection
P1: Nominal cooling and heating test P2: Maximum cooling and heating test
P3: Medium cooling and heating test P0: Minimum cooling and heating test
(12) Drying Function
You may start or stop the drying function under the modes of cooling and dehumidify at the starting status (The modes of automatism,
heating and air supply do not have drying function). When you start the drying function, after stop the machine by pressing the switch
button, you should keep running the inner fans for 2 minutes under low air damper (The swing will operate as the D1 status within 2
minutes, and other load is stopped), then stop the entire machine; When you stop the drying function, press the switch button will stop the
machine directly.When you start the drying function, operating the drying button will stop the inner fans and close the guide louver.
(13) Memory Function
When interrupting the power supply memory content: mode, swing function, light, set temperature and wind speed.
After interrupted the power supply, the machine will start when recovering the power according to the memory content automatically.

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
Safety Precautions for Installing and Relocating the Unit:

To ensure safety, please be mindful of the following precautions.
Warnings
1. When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the
specified refrigerant.
Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or compressor rupture, resulting in
injury.
2.When installing or moving this unit, do not charge the refrigerant which is not comply with that on the nameplate or
unqualified refrigerant.
Otherwise, it may cause abnormal operation, wrong action, mechanical malfunction or even series safety accident.
3.When refrigerant needs to be recovered during relocating or repairing the unit, be sure that the unit is running in cooling
mode.Then, fully close the valve at high pressure side (liquid valve).About 30-40 seconds later, fully close the valve at low
pressure side (gas valve), immediately stop the unit and disconnect power. Please note that the time for refrigerant recovery
should not exceed 1 minute.
If refrigerant recovery takes too much time, air may be sucked in and cause pressure rise or compressor rupture, resulting in injury.
4.During refrigerant recovery, make sure that liquid valve and gas valve are fully closed and power is disconnected before
detaching the connection pipe.
If compressor starts running when stop valve is open and connection pipe is not yet connected, air will be sucked in and cause pressure
rise or compressor rupture, resulting in injury.
5.When installing the unit, make sure that connection pipe is securely connected before the compressor starts running.
If compressor starts running when stop valve is open and connection pipe is not yet connected, air will be sucked in and cause pressure
rise or compressor rupture, resulting in injury.
6.Prohibit installing the unit at the place where there may be leaked corrosive gas or flammable gas.
If there leaked gas around the unit, it may cause explosion and other accidents.
7.Do not use extension cords for electrical connections. If the electric wire is not long enough, please contact a local service
center authorized and ask for a proper electric wire.
Poor connections may lead to electric shock or fire.
8.Use the specified types of wires for electrical connections between the indoor and outdoor units. Firmly clamp the wires so
that their terminals receive no external stresses.
Electric wires with insufficient capacity, wrong wire connections and insecure wire terminals may cause electric shock or fire.
Safety Precautions for Refrigerant

●To realize the function of the air conditioner unit, a special refrigerant circulates in the system. The used refrigerant is the
fluoride R32,which is specially cleaned. The refrigerant is flammable and inodorous. Furthermore, it can leads to explosion
under certain conditions. But the flammability of the refrigerant is very low. It can be ignited only by fire.
●Compared to common refrigerants, R32 is a nonpolluting refrigerant with no harm to the ozonosphere. The influence upon
the greenhouse effect is also lower. R32 has got very good thermodynamic features which lead to a really high energy
efficiency. The units therefore need a less filling.
WARNING:
●Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacture.
Should repair be necessary,contact your nearest authorized Service Centre. Any repairs carried out by unqualified
personnel may be dangerous. The appliance shall be stored in a room without continuously operating ignition sources. (for
example:open flames , an operating gas appliance or an operating electric heater.)
●Do not pierce or burn.
●Appliance shall be installed, operated and stored in a room with a floor area larger than 4m (or 6m ).
●Appliance filled with flammable gas R32. For repairs, strictly follow manufacturers instructions only.Be aware that refrigrants
not contain odour.
●Read specialists manual.

Service Manual
Safety Operation of Flammable Refrigerant

Qualification requirement for installation and maintenance man
●All the work men who are engaging in the refrigeration system should bear the valid certification awarded by the
authoritative organization and the qualification for dealing with the refrigeration system recognized by this industry. If it needs
other technician to maintain and repair the appliance, they should be supervised by the person who bears the qualification for
using the flammable refrigerant.
●It can only be repaired by the method suggested by the equipments manufacturer.
Installation notes
●The air conditioner is not allowed to use in a room that has running fire (such as fire source,working coal gas ware,
operating heater).
●It is not allowed to drill hole or burn the connection pipe.
●The air conditioner must be installed in a room that is larger than the minimum room area.
The minimum room area is shown on the nameplate or following table a.
●Leak test is a must after installation.
table a - Minimum room area(m2)
Maintenance notes
●Check whether the maintenance area or the room area meet the requirement of the nameplate.
— Its only allowed to be operated in the rooms that meet the requirement of the nameplate.
●Check whether the maintenance area is well-ventilated.
— The continuous ventilation status should be kept during the operation process.
●Check whether there is fire source or potential fire source in the maintenance area.
— The naked flame is prohibited in the maintenance area; and the “no smoking” warning board should be hanged.
●Check whether the appliance mark is in good condition.
— Replace the vague or damaged warning mark.
Welding
●If you should cut or weld the refrigerant system pipes in the process of maintaining, please follow the steps as below:
a. Shut down the unit and cut power supply
b. Eliminate the refrigerant
c. Vacuuming
d. Clean it with N2 gas
e. Cutting or welding
f. Carry back to the service spot for welding
●Make sure that there isnt any naked flame near the outlet of the vacuum pump and its well-ventilated.
●The refrigerant should be recycled into the specialized storage tank.
Filling the refrigerant

●Use the refrigerant filling appliances specialized for R32. Make sure that different kinds of refrigerant wont contaminate with
each other.
●The refrigerant tank should be kept upright at the time of filling refrigerant.
●Stick the label on the system after filling is finished (or havent finished).
●Dont overfilling.
●After filling is finished, please do the leakage detection before test running; another time of leak detection should be done
when its removed.
Safety instructions for transportation and storage

●Please use the flammable gas detector to check before unload and open the container.
●No fire source and smoking.
●According to the local rules and laws.

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 5 7/8
Space to the wall

Space to the wall At least 5 7/8
At least 5 7/8
8
st n
Space to the floor

11
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Service Manual
Installation procedures
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 Owner’s manual,
6 13 conditioner.
cable(power cord) remote controller
7 Wall pipe Air-conditioner Air switch capacity
Note: 09/12K 16A
1.Please contact the local agent for installation.
2.Don't 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 can't 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 andwon't 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 won't 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) Don't 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 the 1. Choosing Installation Iocation
outdoor unit won't 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)
Open-end
Wall wrench
Wall
Mark in the middle of it Level meter
Union nut
Space Space Pipe
Pipe joint Union nut
to the to the Torque wrench Pipe
wall wall Fig.5
above above Indoor pipe Fig.6
150mm 150mm
Left Right
Φ55mm Φ55mm
Rear piping hole Rear piping hole
Fig.1
Insulating pipe Fig.7
(2) Open a piping hole with the diameter of Φ70mm on the
selected outlet pipe position.In order to drain smoothly, slant Refer to the following table for wrench moment of force:
the piping hole on the wall slightly downward to the outdoor
side with the gradient of 5-10°.(As show in Fig.2) Hex nut diameter(mm) Tightening torque(N.m)
Φ6 15~20
Indoor Outdoor Φ9.52 30~40
Φ12 45~55
Φ16 60~65
Φ19 70~75
Φ55mm
5-10°
6. Install Drain Hose
(1) Connect the drain hose to the outlet pipe of indoor unit.(As
show in Fig.8)
Fig.2 (2) Bind the joint with tape.(As show in Fig.9)
Note:
(1) Pay attention to dust prevention and take relevant safety
measures when opening the hole.
Fig.8 Drain hose
(2) The plastic expansion particles are not provided and should
be bought locally. Outlet pipe
Outlet Drain hose Tape

4. Outlet Pipe pipe
(1) The pipe can be led out in the direction of right, rear right, Fig.9
left or rear left.(As show in Fig.3)
(2) When selecting leading out the pipe from left or right, please Note:
cut off the corresponding hole on the bottom case.(As show in (1) Add insulating pipe in the indoor drain hose in order to
Fig.4) prevent condensation.
(2) The plastic expansion particles are not provided.
(As show in Fig.10)
Left Rear left

Fig.3 Drain hose
Rear right
Right
Left Right
Insulating pipe Fig.10

Cut off
the hole Fig.4

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)
Panel Screw (2) Reserve a certain length of drain hose and power cord
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
Wiring cover the end.
Fig.11
(2) Make the power connection wire go through the cable-cross Indoor and
hole at the back of indoor unit and then pull it out from the front Indoor unit
outdoor power cord
Gas
side.(As show in Fig.12) pipe
Cable-cross Fig.14 Liquid

hole Band pipe
Drain hose
Power connection
wire
Connection pipe Drain hose
Band
Fig.12
(3) Remove the wire clip; connect the power connection wire
and signal control wire to the wiring terminal according to the
Fig.15
color; tighten the screw and then fix them with wire clip.(As
Indoor power cord
show in Fig.13)
Note:
N(1) 2 3
(1) The power cord and control wire can't be crossed or
blue black brown yellow- winding.
green
(2) The drain hose should be bound at the bottom.
9. Hang the Indoor Unit

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

Service Manual
8.6 Installation of Outdoor Unit (3) Pretightening the union nut with hand.
(4) Tighten the union nut with torque wrench .
1. Fix the Support of Outdoor Unit(Select it according to
Refer to the following table for wrench moment of force:
the actual installation situation)
(1) Select installation location according to the house structure.
Hex nut diameter(mm) Tightening torque(N.m)
(2) Fix the support of outdoor unit on the selected location with
Φ6 15~20
expansion screws.
Φ9.52 30~40
Note: Φ12 45~55
(1) Take sufficient protective measures when installing the Φ16 60~65
outdoor unit. Φ19 70~75
(2) Make sure the support can withstand at least four times the
unit weight. 5. Connect Outdoor Electric Wire
(3) The outdoor unit should be installed at least 3cm above the (1) Remove the wire clip; connect the power connection wire
floor in order to install drain joint.(As show in Fig.18) and signal control wire (only for cooling and heating unit) to the
(4) For the unit with cooling capacity of 2300W~5000W, 6 wiring terminal according to the color; fix them with screws.(As
expansion screws are needed; for the unit with cooling capacity show in Fig.23)
of 6000W~8000W, 8 expansion screws are needed; for the Handle
unit with cooling capacity of 10000W~16000W, 10 expansion 1
screws are needed. Fig.23 1 /
%1
<(*1 %. <(*1
%8 %. %1 %8
32:(5
,1'22581,7 1 /
Drain vent Chassis Note: the wiring connect is for reference only,
Outdoor drain joint please refer to the actual one.
Drain hose
At least 3cm above the floor
Fig.18 Fig.19
(2) Fix the power connection wire and signal control wire with
2. Install Drain Joint(Only for cooling and heating unit) wire clip.
(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
(1) The pipes should be placed along the wall, bent reasonably
Foot holes Handle and hidden possibly. Min. semidiameter of bending the pipe is
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.24)
Fig.21 Valve cover
Fig.20
The drain hos
4. Connect Indoor and Outdoor Pipes can't raise
upwards
(1) Remove the screw on the handle and valve cover of outdoor
unit and then remove the handle and valve cover.(As show in
Fig.21) Wall
(2) Remove the screw cap of valve and aim the pipe joint at the
bellmouth of pipe.(As show in Fig.22) Fig.25
U-shaped curve
Fig.24
Liquid pipe Pipe joint
Drain hose
Liquid gas pipe
valve
Union nut
gas valve
Fig.22

Service Manual
Note: 2. Leakage Detection

(1) The through-wall height of drain hose shouldn't 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:
can't 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 can't 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, there's 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 drain hose The water outlet NO. Items to be checked Possible malfunction
can't be fluctuant can't be placed
The water
in water Has the unit been The unit may drop, shake or
outlet can't be 1
fluctuant Fig.27 installed firmly? emit noise.
Have you done the It may cause insufficient cooling
2
Fig.26 refrigerant leakage test? (heating) capacity.
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 Detection water dripping.
Is the voltage of power
1. Use Vacuum Pump supply according to the It may cause malfunction or
5
(1) Remove the valve caps on the liquid valve and gas valve voltage marked on the damage the parts.
and the nut of refrigerant charging vent. nameplate?
(2) Connect the charging hose of piezometer to the refrigerant Is electric wiring and
It may cause malfunction or
charging vent of gas valve and then connect the other charging 6 pipeline installed
damage the parts.
hose to the vacuum pump. correctly?
(3) Open the piezometer completely and operate for 10-15min Is the unit grounded
7 It may cause electric leakage.
to check if the pressure of piezometer remains in -0.1MPa. securely?
(4) Close the vacuum pump and maintain this status for 1-2min Does the power cord It may cause malfunction or
8
to check if the pressure of piezometer remains in -0.1MPa. If follow the specification? damage the parts.
the pressure decreases, there may be leakage. Is there any obstruction It may cause insufficient cooling
9
(5) Remove the piezometer, open the valve core of liquid valve in air inlet and air outlet? (heating) capacity.
and gas valve completely with inner hexagon spanner. The dust and
(6) Tighten the screw caps of valves and refrigerant charging sundries caused It may cause malfunction or
10
vent.(As show in Fig.28) during installation are damaging the parts.
removed?
Liquid valve
The gas valve and liquid
Piezometer It may cause insufficient cooling
Lo Hi
11 valve of connection pipe
Gas valve
(heating) capacity.
are open completely?
Refrigerant charging Valve cap Is the inlet and outlet It may cause insufficient cooling
vent 12 of piping hole been (heating) capacity or waster
Nut of refrigerant covered? eletricity.
Charging vent
2. Test Operation
Vacuum pump (1) Preparation of test operation
● The client approves the air conditioner installation.
Inner hexagon
spanner ● Specify the important notes for air conditioner to the client.
(2) Method of test operation
● Put through the power, press ON/OFF button on the remote
Close
controller to start operation.
Open
● Press MODE button to select AUTO, COOL, DRY, FAN and
HEAT to check whether the operation is normal or not.
● If the ambient temperature is lower than 16℃ , the air
Fig.28 conditioner can’t start cooling.

Service Manual
8.9 Wired Controller

If the product you bought is equipped with wired controller, please refer to the following introductions of wired controller.
1.Displaying Part
Fig1.1.1 Outline of wired controller
1.1 LCD Display of Wired Controller
Fig.1.1.2 LCD display

1.2 Instruction to LCD Display
No. Symbols Description
1 Swing function
2 Air exchange function (this function is yet unavailable for this unit)
3 Sleep function (Only sleep 1)
4 Each kind of running mode of indoor unit (auto mode)
5 Cooling mode
6 Dry mode
7 Fan mode
8 Heating mode
9 Defrosting function for the outdoor unit
10 Gate-control function (this function is yet unavailable for this unit)

Service Manual
11 Lock function
Shield functions (Button operation, temperature setting, On/Off operation,Mode setting are
12 SHIELD
disabled by the remote monitoring system.)
13 TURBO Turbo function state
Memory function (The indoor unit resumes the original setting state after power failure and
14 MEMORY
then power recovery)
15 It blinks under on state of the unit without operation of any button
16 SAVE Energy-saving function
17 Ambient/setting temperature value
18 E-HEATER Electric auxiliary heating function(this function is yet unavailable for this unit)
19 BLOW Blow function
20 Timing value
21 QUIET Quiet function (two types: quiet and auto quiet)(this function is yet unavailable for this unit).
2 Buttons
2.1 Layout of Buttons
2.2 Functions of Buttons
No. Name Function

1 Enter/Cancel Function selection and cancellation.
2 ▲ ① Running temperature setting of the indoor unit, range:16~30°C.
6 ▼ ② Timer setting, range:0.5-24 hr.
3 Fan Setting of the high/middle/low/auto fan speed.
4 Mode Setting of the Cooling/Heating/Fan/Dry/Auto mode of the indoor unit.
6 Function Switchover among the functions of Turbo/Save/E-heater/Blow etc.
7 Timer Timer setting.
8 On/Off Turn on/off the indoor unit.
Press them for 5s under off state of the unit to enter/cancel the Memory function(If memory
is set, indoor unit after power failure and then power recovery will resume the original
4+2 ▲+Mode
setting state. If not, the indoor unit is defaulted to be off after power recovery. Memory off is
default before delivery.).
By pressing them at the same time under off state of the unit, will be displayed on the
3+6 Fan+▼ wired controller for the cooling only unit, while will be displayed on the wired controller
for the cooling and heating unit.
Upon startup of the unit without malfunction or under off state of the unit,press them at the
2+6 ▲+▼ same time for 5s to enter the lock state, in which case,any other buttons wont respond the
press. Repress them for 5s to quit this state.

Service Manual
3 Operation Instructions
3.1 On/Off
Press On/Off to turn on the unit and turn it off by another press.
Note: The state shown in Fig.3.1.1 indicates the “Off” state of the unit after power on. The state shown in Fig.3.1.2 indicates the “On”
state of the unit after power on.

Fig.3.1.1 “Off” State Fig.3.1.2 “On” State

3.2 Mode Setting
Under ON state of the unit, press the Mode to switch the operation modes as the following sequence: Auto–Cooling–Dry–Fan–Heating.

3.3 Temperature Setting
Press ▲or ▼ to increase/decrease the preset temperature. If pressing either of them continuously, the temperature will be increased or
decreased by 1°C every 0.5s,as shown in Fig.3.3.1.
In the Cooling, Dry, Fan or Heating mode, the temperature setting range is 16~30°C(61~86°F).
In the Auto mode, the setting temperature is unadjustable.

Fig.3.3.1 Fig.3.4.1
3.4 Fan Setting
Under the “On” state of the unit, press Fan and then fan speed of the indoor unit will change circularly as shown in Fig.3.4.1.
Low Middle High
3.5 Timer Setting

Under on-state of the unit, Press Timer button to set timer off of the unit. Under off-state of the unit, press Timer button to set timer on of
the unit in the same way.
• Timer on setting:
Under off-state of the unit without timer setting, if Timer button is pressed, LCD will display xx.Hour,with ON blinking. In this case, press▲
or ▼ button to adjust timer on and then press Timer to confirm.

Service Manual
• Timer off setting:

Under on-state of the unit without timer setting, if Timer button is pressed, LCD will display xx. Hour,with OFF blinking. In this case,
press▲ or ▼ button to adjust timer on and then press Timer to confirm.
• Cancel timer:
After setting of timer, if Timer button is pressed, LCD wont display xx. Hour so that timer setting is canceled.
Timer off setting under the “On” state of the unit is shown as Fig.3.5.1.
Turn on the unit,without Timer Press Timer repeatedly unitll go Press ▲/▼ to adjust the time
activated to the setting status
Press Timer to cancel this setting Press Enter/Cancel to confirm this setting
Fig.3.5.1 Timer off Setting under the “On” State of the Unit
Timer on setting under the “Off” state of the unit is shown as Fig.3.5.2.
Turn off the unit,without Timer Press Timer repeatedly unitll go Press ▲/▼ to adjust the time
activated to the setting status
Press Timer to cancel this setting Press Enter/Cancel to confirm this setting
Fig.3.5.2 Timer on Setting under the “Off” State of the Unit

Service Manual
Timer range: 0.5-24hr. Every press of ▲or ▼ will make the set time increased or decreased by 0.5hr. If either of them is pressed
continuously, the set time will increase/ decrease by 0.5hr every 0.5s.
3.6 Swing Setting

Swing On: Press Function under on state of the unit to activate the swing function. In this case, will blink,After that,press Enter/Cancel
to make a confirmation.
Swing Off: When the Swing function is on, press Function to enter the Swing setting interface,with blinking. After that, press Enter/
Cancel to cancel this function. Swing setting is shown as Fig.3.6.1.
Turn off the unit,without Swing Press Function repeatedly unitll Press Enter/Cancel to activated the Swing
function activated go to the Swing setting status function
Press Enter/Cancel to cancel this Press Function repeatedly unitll go to the

Fig.3.6.1 Swing Setting setting Swing function again
Notes:
(1)Sleep, Turbo or Blow setting is the same as the Swing setting.
(2)After the setting has been done, it has to press the key “Enter/Cancel” to back to the setting status or quit automatically five seconds
later.
3.7 Sleep Setting

Sleep on: Press Function under the On state of the unit till the unit enters the Sleep setting state. After that, press Enter/Cancel to
confirm this setting.
Sleep off: When the Sleep function is activated, press Function to enter the Sleep setting status. After that, press Enter/Cancel to cancel
this function.
In the Cooling or Dry mode, the temperature will increase by 1°C(1~2°F) after the unit runs under Sleep1 for 1hr and 1°C(1~2°F) after
another 1hr.After that, the unit will run at this temperature.
In the Heating mode, the temperature will decrease by 1°C(1~2°F) after the unit runs under Sleep 1 for 1hr and 1°C(1~2°F) after another
1hr. After that, the unit will run at this temperature.

Service Manual
Turn off the unit,without Sleep Press Function repeatedly unitll Press Enter/Cancel to activated the Sleep
function activated go to the Sleep setting status function

Fig.3.7.1. Sleep Setting
setting Sleep function again
3.8 Turbo Setting

Turbo function: The unit at the high fan speed can realize quick cooling or heating so that the room temperature can quickly approach the
setting value.
In the Cooling or Heating mode, press Function till the unit enters the Turbo setting status and then press Enter/Cancel to confirm the setting.
When the Turbo function is activated, press Function to enter the Turbo setting status and then press Enter/Cancel to cancel this function.
Turbo function setting is as shown in Fig.3.8.1.
Turn off the unit,without Turbo Press Function repeatedly unitll Press Enter/Cancel to activated the Turbo
function activated go to the Turbo setting status function

Fig.3.8.1 Turbo Setting
setting Turbo function again

Service Manual
3.9 E-heater Setting

E-heater (auxiliary electric heating function): In the Heating mode, E-heater is allowed to be turned on for improvement of effciency.
Once the wired controller or the remote controller enters the Heating mode, this function will be turned on automatically.
Press Function in the Heating mode to enter the E-heater setting interface and then press Enter/Cancel to cancel this function.
Press Function to enter the E-heater setting status, if the E-heater function is not activated, and then press Enter/Cancel to activate it.
The setting of this function is shown as Fig.3.9.1 below:
Turn off the unit,without E-heater Press Function repeatedly unitll Press Enter/Cancel to activated the E-heater
function activated go to the E-heater setting status function
Press Enter/Cancel to cancel this Press Function repeatedly unitll go to

Fig.3.9.1 E-heater Setting setting the E-heater setting function again
3.10 Blow Setting
Blow function: After the unit is turned off, the water in evaporator of indoor unit will be automatically evaporated to avoid mildew.
In the Cooling or Dry mode, press Function till the unit enters the Blow setting status and then press Enter/Cancel to active this function.
When the Blow function is activated, press Function to the Blow setting status and then press Enter/Cancel to cancel this function.
Blow function setting is as shown in Fig.3.10.1
Turn off the unit,without Blow Press Function repeatedly unitll Press Enter/Cancel to activated the Blow
function activated go to the Blow setting status function
Press Enter/Cancel to cancel this Press Function repeatedly unitll go to

Fig.3.9.1 E-heater Setting setting the Blow setting function again
Service Manual
Notes:
(1)When the Blow function is activated, if turning off the unit by pressing On/Off or by the remote controller, the indoor fan will run at the
low fan speed for 2 min, with “BLOW” displayed on the LCD. While, if the Blow function is deactivated, the indoor fan will be turned off
directly.
(2)Blow function is unavailable in the Fan or Heating mode.
3.11 Other Functions

a. Lock
Upon startup of the unit without malfunction or under the “Off” state of the unit, press ▲ and ▼ at the same time for 5s till the wired
controller enters the Lock function. In this case, LCD displays .
After that, repress these two buttons at the same time for 5s to quit this function.
Under the Lock state, any other button press wont get any response.
b. Memory
Memory switchover: Under the “Off” state of the unit, press Mode and ▲ at the same time for 5s to switch memory states between
memory on and memory off. When this function is activated, Memory will be displayed. If this function is not set, the unit will be under the
“Off” state after power failure and then power recovery.
Memory recovery: If this function has been set for the wired controller, the wired controller after power failure will resume its original
running state upon power recovery. Memory contents: On/Off, Mode, set temperature, set fan speed and Lock function.
4. Installation and Dismantlement

4.1 Connection of the Signal Line of the Wired Controller
● Open the cover of the electric control box of the indoor unit.
● Let the single line of the wired controller through the rubber ring.
● Connect the signal line of the wired control to the 4-pin socket of the indoor unit PCB.
● Tighten the signal wire with ties.
● The communication distance between the main board and the wired controller can be up to 20 meters ( the standard distance is 8
meters)
4.2 Installation of the Wired Controller
PVC Pipe
1 2 3 4 5
Fig.4.1 Accessories for the Installation of the Wired Controller
No. 1 2 3 4 5
Socket box embedded Soleplate of the Wired Front Panel of the
Name Screw M4X25 Screw ST 2.9X6
in the wall Controller Wired Controller

Service Manual
1 2 3 4
6 5
7
Fig.4.2
8 9 10
Fig.4.2
Fig.4.2 shows the installation steps of the wired controller, but there are some issues that need your attention.
(1) Prior to the installation, please firstly cut off the power supply of the wire buried in the installation hole, that is, no operation is allowed
with electricity during the whole installation.
(2) Pull out the four-core twisted pair line from the installation holes and then let it go through the rectangular hole behind the soleplate of
the wired controller.
(3) Stick the soleplate of the wire controller to the wall over the installation hole and then fix it with screws M4X25.
(4) Insert the four-core twisted pair line into the slot of the wired controller and then buckle the front panel and the soleplate of the wired
controller together.
(5) Finally, fix the front panel and the soleplate of the wired controller tightly by screws ST2.9X6.
CAUTION!
Please pay special attention to the followings during the connection to avoid the malfunction of the air conditioning unit due to
electromagnetic interference.
(1) Separate the signal and communication lines of the wired controller from the power cord and connection lines between the indoor and
outdoor unit, with a minimum interval of 20cm, otherwise the communication of the unit will probably work abnormally.
(2) If the air conditioning unit is installed where is vulnerable to electromagnetic interference,then the signal and communication lines of
the wired controller must be the shielding twisted pair lines.

Service Manual
5 Errors Display
If there is an error occurring during the operation of the system, the error code will be displayed on the LCD, as show in Fig.5.1. If multi
errors occur at the same time, their codes will be displayed circularly.
Note: In event of any error, please turn off the unit and contact the professionally skilled personnel.
Fig.5.1

Service Manual
9. Maintenance
9.1 Error Code List
Display Method of Indoor Unit
Indicator Display (during

Malfunction
NO. Dual-8 blinking, ON 0.5s and OFF A/C status Possible Causes
Name
Code 0.5s)
Display
Operation Cool Heating
Indicator Indicator Indicator
During cooling and drying Possible reasons:

High operation, except indoor 1. Refrigerant was superabundant;
pressure fan operates, all loads stop 2. Poor heat exchange (including
1 E1
protection of operation.
system During heating operation, the and bad radiating environment );
complete unit stops. Ambient temperature is too high.
During cooling and drying
1. Poor air-return in indoor unit;
Antifreezing operation, compressor and
2 E2 2. Fan speed is abnormal;
protection outdoor fan stop while indoor
3. Evaporator is dirty.
fan operates.
1.Refrigerant leakage;
Refrigerant The Dual-8 Code Display will 2.Indoor evaporator temperature
3 leakage F0 show F0 and the complete unit sensor works abnormally;
protection stops. 3.The unit has been plugged up
somewhere.
High During cooling and drying
discharge operation, compressor and Please refer to the malfunction
4 temperature E4 outdoor fan stop while indoor analysis (discharge protection,
protection of fan operates. During heating overload).
compressor operation, all loads stop.
1. Supply voltage is unstable;
operation, compressor and
Overcurrent 2. Supply voltage is too low and
5 E5 outdoor fan stop while indoor
protection load is too high;
fan operates. During heating
3. Evaporator is dirty.
operation, all loads stop.
During cooling operation,
Communi- compressor stops while
Refer to the corresponding
6 cation E6 indoor fan motor operates.
malfunction analysis.
Malfunction During heating operation, the
complete unit stops.
During cooling operation:

High
compressor will stop while Refer to the malfunction analysis
temperature
7 E8 indoor fan will operate. (overload, high temperature
resistant
During heating operation, the resistant).
protection
complete unit stops.

operation, compressor will stop
EEPROM Replace outdoor control panel AP1
8 EE while indoor fan will operate;
malfunction
During heating operation, the
complete unit will stop
Discharging after the complete unit

Limit/ is de-energized for 20mins, check
decrease whether the thermal grease on
All loads operate normally,
frequency IPM Module of outdoor control
9 EU while
due to high
operation frequency for
temperature the radiator is inserted tightly.
compressor is decreased
of module If its no use, please replace control
panel AP1.
1. No jumper cap insert on
mainboard.
Malfunction Wireless remote receiver and
2. Incorrect insert of jumper cap.
10 protection of C5 button are effective, but can
3. Jumper cap damaged.
jumper cap not dispose the related
4. Abnormal detecting circuit of
command
mainboard.

Service Manual

Malfunction
Name
Code 0.5s)
Display
When the outdoor unit receive

signal of Gathering refrigerant
Gathering
11 Fo ,the system will be forced to Nominal cooling mode
refrigerant
run under cooling mode for
gathering refrigerant
1. Loosening or bad contact of
indoor ambient temp. sensor and
Indoor During cooling and drying
mainboard terminal.
ambient operation, indoor unit operates
2. Components in mainboard fell
temperature while other loads will stop;
12 F1 down leads short circuit.
sensor is during heating operation,
3. Indoor ambient temp. sensor
open/short the complete unit will stop
damaged.(check with sensor
circuited operation.
resistance value chart)
4. Mainboard damaged.
1. Loosening or bad contact of
Indoor
AC stops operation once evaporator temp. sensor and
Indoor
reaches the setting mainboard terminal.
evaporator 2. Components on the mainboard
temperature. Cooling, drying:
temperature fall
13 F2 internal fan motor stops
sensor is down leads short circuit.
operation while other loads 3. Indoor evaporator temp. sensor
open/short
stop operation; heating: AC damaged.(check temp. sensor
circuited
stop operation value
chart for testing)
4. Mainboard damaged.
Outdoor During cooling and drying
Outdoor temperature sensor
ambient operating, compressor stops
hasnt been connected well or
temperature while indoor fan operates;
14 F3 is damaged. Please check it by
sensor is During heating operation,
referring to the resistance table for
temperature sensor)
circuited operation
Outdoor During cooling and drying
Outdoor temperature sensor
condenser operation, compressor stops
hasnt been connected well or
temperature while indoor fan will operate;
15 F4 is damaged. Please check it by
sensor is During heating operation,
referring to the resistance table for
temperature sensor)
circuited operation.
During cooling and drying 1.Outdoor temperature sensor
Outdoor operation, compressor will sop hasnt been connected well or is
discharge after operating for about 3 damaged. Please check it by
temperature mins, referring to the resistance table for
16 F5
sensor is while indoor fan will operate; temperature sensor)
open/short During heating operation, the 2.The head of temperature sensor
circuited complete unit will stop after hasnt been inserted into the copper
operating for about 3 mins. tube
Limit/
decrease Refer to the malfunction analysis
while
17 frequency F6 (overload, high temperature
due to resistant)
overload
Decrease All loads operate normally,

The input supply voltage is too low;
frequency while
18 F8 System pressure is too high and
due to operation frequency for
overload
overcurrent compressor is decreased

Service Manual

Malfunction
Name
Code 0.5s)
Display
Decrease Overload or temperature is too
frequency high;
while
19 due to F9
high air Malfunction of electric expansion
discharge valve (EKV)
Limit/
decrease All loads operate normally,
Poor air-return in indoor unit or fan
20 frequency FH while operation frequency for
speed is too low
due to compressor is decreased
antifreezing
1. Measure the voltage of position
L and N on wiring board (XT), if the
During cooling and drying voltage is higher than 265VAC, turn
operation, compressor will stop on the unit after the supply voltage
Voltage for is increased to the normal range.
while indoor fan will operate;
21 DC bus-bar PH 2.If the AC input is normal,
During heating operation, the measure the voltage of electrolytic
is too high
complete unit will stop capacitor C on control panel (AP1),
operation. if its normal, theres malfunction
for the circuit, please replace the
control panel (AP1)
1. Measure the voltage of position
L and N on wiring board (XT), if the
voltage is higher than 150VAC,
turn on the unit after the supply
During cooling and drying voltage is increased to the normal
Voltage of operation, compressor will stop range.
22 DC bus-bar PL while indoor fan will operate;
is too low During heating operation, the 2.If the AC input is normal,
complete unit will stop measure the voltage of electrolytic
capacitor C on control panel (AP1),
if its normal, theres malfunction
for the circuit, please replace the
control panel (AP1)
Compressor
Min Showing during min. cooling or
23 P0
frequence in min. heating test
test state
Compresso r
rated Showing during nominal cooling or
24 P1
frequenc e in nominal heating test
test state
Compressor
maximum Showing during max. cooling or
25 P2
frequence in max. heating test
test state

Service Manual

Malfunction
Name
Code 0.5s)
Display
Compressor
intermediate Showing during middle cooling or
26 P3
frequence in middle heating test
test state

Overcurrent Refer to the malfunction
protection of analysis (IPM protection, loss
27 phase P5 of synchronism protection and
current for overcurrent protection of phase
compressor current for compressor.
operation.

Charging
malfunction Refer to the part three—charging
28 PU while indoor fan will operate;
of capacitor malfunction analysis of capacitor
Malfunction During cooling and drying

of module operation, compressor will stop
29 P7 while indoor fan will operate; Replace outdoor control panel AP1
temperature
sensor circuit complete unit will stop
After the complete unit is de-

energized for 20mins, check
During cooling operation, whether the thermal grease on IPM
Module high compressor will stop while Module of outdoor control panel
30 temperature P8 indoor fan will operate;
protection During heating operation, the
complete unit will stop radiator is inserted tightly. If its no
use, please replace control panel
AP1.
Decrease
frequency
due to high All loads operate normally, Refer to the malfunction analysis
temperature while
31 H0 (overload, high temperature
resistant operation frequency for
compressor is decreased resistant)
during
heating
operation
Static
32 dedusting H2
protection
During cooling and drying 1. Wiring terminal OVC-COMP

operation, compressor will stop is loosened. In normal state, the
Overload
while indoor fan will operate; resistance for this terminal should
33 protection for H3
During heating operation, the be less than 1ohm.
compressor
complete unit will stop 2.Refer to the malfunction analysis (
operation. discharge protection, overload)

Service Manual

Malfunction
Name
Code 0.5s)
Display
Refer to the malfunction analysis
System is while indoor fan will operate;
34 H4 (overload, high temperature
abnormal During heating operation, the
resistant)
operation.
Refer to the malfunction
analysis (IPM protection, loss
IPM while indoor fan will operate;
35 H5 of synchronism protection and
overcurrent protection of phase
current for compressor.
operation.
1. Bad contact of DC motor

feedback terminal.
Internal fan motor, external fan 2. Bad contact of DC motor
Internal motor motor, compressor and electric control end.
36 (fan motor) do H6 heater stop operation,guide
3. Fan motor is stalling.
not operate louver stops at present
location. 4. Motor malfunction.
5. Malfunction of mainboard rev
detecting circuit.
During cooling and drying Refer to the malfunction
Desynchro- operation, compressor will stop analysis (IPM protection, loss
37 nizing of H7 of synchronism protection and
compressor complete unit will stop overcurrent protection of phase
operation. current for compressor.
PFC while indoor fan will operate;
38 HC Refer to the malfunction analysis
operation.
Outdoor DC Outdoor DC fan motor DC fan motor malfunction or

39 fan motor L3 malfunction lead to compressor system blocked or the connector
malfunction stop operation, loosed
compressor stop operation and

Outdoor fan motor will stop To protect the electronical
power
40 L9 30s latter , 3 minutes latter components when detect high
protection
fan motor and compressor will power
restart
Indoor unit
compressor and Outdoor fan Indoor unit and outdoor unit doesn't
and outdoor LP
motor can’t work match
41 unit doesn't
match
Failure start- while indoor fan will operate;
42 LC Refer to the malfunction analysis
up During heating operation, the
operation.

Service Manual

Malfunction
Name
Code 0.5s)
Display
Malfunction of During cooling and drying

phase current operation, compressor will stop
43 detection U1 while indoor fan will operate; Replace outdoor control panel AP1
circuit for During heating operation, the
compressor complete unit will stop

Malfunction of
voltage
44 U3 while indoor fan will operate; Supply voltage is unstable
dropping for
DC bus-bar

operation, the compressor will
Malfunction Theres circuit malfunction on
stop while indoor fan will
of complete outdoor units control panel AP1,
45 U5 operate;
units current please replace the outdoor units
During heating operating,
detection control panel AP1.
the complete unit will stop
operation.
1.Supply voltage is lower than

If this malfunction occurs AC175V;
The four-way
during 2.Wiring terminal 4V is loosened or
46 valve is U7
heating operation, the complete broken;
abnormal
unit will stop operation. 3.4V is damaged, please replace
4V.
Zero- During cooling operation,

crossing compressor will stop while
47 U9 indoor fan will operate; during Replace outdoor control panel AP1
malfunction of
heating,the complete unit will
outdoor unit stop operation.
Frequency
48 limiting
(power)
49 Compressor
running
The
temperature
50 for turning
on the unit is
reached
Frequency
limiting
51
(module
temperature)

Service Manual

Malfunction Dual-8 blinking, ON 0.5s and OFF
NO. 0.5s) A/C status Possible Causes
Name Code
Display Operation Cool Heating
Normal
52 communica-
tion
OFF 3S Defrosting will occur in

and blink
heating
once
(during mode. Compressor will
53 Defrosting Its the normal state
blinking, operate
ON 10s while indoor fan will stop
and OFF
operation.
0.5s)
Malfunction
of zero-cross 1.Power supply is abnormal;
54 detection U8 The complete unit stops 2.Detection circuit of indoor
circuit control mainboard is abnormal.
Malfunction
55 of detecting JF
plate(WIFI )

Service Manual
9.2 Procedure of Troubleshooting

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 can't operate?
● The motor is broken?
● Detectioncircuit of the mainboard is defined abnormal?
Start
Turn the fan blades

by hand under
power-off condition
Adjust the motor and blade

Whether the fan blades assembly so that rotor can run
No
can run smoothly? smoothly.
Turn unit on
Yes to check whether the
No malfunction is
eliminated.
Under power-off condition,

check whether the wiring terminal Reinsert the wiring
between indoor fan and main
Yes terminal of indoor fan.
board is loose.
Turn unit on
No No to check whether the Yes
malfunction is
eliminated.
Connect power and restart the unit. It's the malfunction of main board.
Test whether the voltage between terminal 1 and terminal 2 No Replace a new main board that is
of motor interface is within 280~310VDC. of the same model.
Yes
Yes
Then check whether the voltage It's the malfunction of main board.
between terminal 2 and terminal 3 No Replace a new main board that is
of the same model.
of the motor interface is 15VDC.
Yes
Then check whether there is voltage It's the malfunction of main board.
between terminal 2 and terminal 4 No Replace a new main board that is
of the motor interface. of the same model.
Yes
It's the malfunction of motor.

Replace a new motor that is End
of the same model.

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
No Is malfunction 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 Overcurrent Protection E5

● Is the supply voltage unstable with big fluctuation?
● Is the supply voltage too low with overload?
● Hardware trouble?
Start
Yes Normal fluctuation should be within 10 % Is malfunction Yes

Is the supply voltage unstable
with big fluctuation? of the rated voltage on the nameplate eliminated
No No
Is the supply voltage too low Yes Adjust the supply voltage to maintain it Is malfunction Yes
with overload? within normal range eliminated
No No
Is the indoor / outdoor Yes Clean the indoor and outdoor heat Is malfunction Yes
heat exchanger dirty,or are the air inlet exchangers and remove the blockage eliminated
and outlet blocked? of air inlet and outlet
No
No
The fan is abnormal? Fan Yes Check the motor and reinstall the Is malfunction Yes
speed is too low or fan doesn’t rotate motor to have the fan run normally eliminated
No No
Measure the current of live wire on

the main board with a clamp ampere No Replace the mainboard with the same Yes
Is malfunction
meter. Is the current higher than the model eliminated
value of the overcurrent protection?
Yes No
Is there blockage inside the system? Yes Flush the heat exchangers with high
(Filth blockage, ice plug, greasy Is malfunction Yes
blockage, the cut off valve hasn’t been pressure nitrogen eliminated
opened completely)
No No
Is the compressor running abnormally? Yes Is malfunction Yes

Is there abnormal sound or oil leakage; Replace the compressor
eliminated
Is the temperature of the shell too high,
etc.?
No
Replace the mainboard

with the same model
End

Service Manual
5. Communication Malfunction E6
Start
Cut off power supply. Check if

connection line of IDU and ODU
and the wire inside electric box
are correctly connected.
Connect the line

Correct connection? No according to Malfunction eliminated?
wiring diagram.
Yes
No
Main board matches

Match correctly
with display board? Main board of no Malfunction eliminated?
IDU matches with that of ODU? according to product Yes
specification
Yes
No
Replace
Communication cord is damaged? Yes communication Malfunction eliminated? Yes
cord
No
No
Replace IDU's
main board
Yes
Replace ODU's
Malfunction eliminated? No
main board.
Yes
End

Service Manual
6. 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
7. Malfunction of detecting plate(WIFI) JF
5. Malfunction of detecting plate(WIFI) JF
Start
check if the connection wire

are correctly connected
Yes
Replace the detecting

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

with the same model
The end

Service Manual
Outdoor Unit
1. Capacity charging malfunction (outdoor unit malfunction) (AP1 below means control board of outdoor unit)
● Detect if the voltage of L and N terminal of XT wiring board is between 210VAC-240VAC by alternating voltage meter;
● Is reactor (L) well connected? Is connection wire loosened or pulled out? Is reactor (L) damaged?
Turn on the unit and

wait 1 minute
Use AC voltmeter to measure

the voltage on the two ends
of electrolytic capacitor
(see fig 30)
Malfunction of
Voltage higher Replace outdoor
Y the outdoor
than 200V? mainboard
mainboard AP1
Measure the voltage

input with AC voltmeter
(see fig 30)
Power supply is
abnormal; repair
Voltage within the power supply Power on and
N Is the Vmalfunction Y
180VAC~260VAC? to restore the range restart the unit
eliminated?
between 180VAC
~260VAC
Y
Shut down the power and wait 20

minutes; or use DC voltmeter to
measure the voltage on the two N
ends of electrolytic capacitor
until the voltage is lower than 20V
Check the connection

of reactor and connection
wire
Connect the
If the wiring of connection Power on and
N Is the Vmalfunction Y
reactor L is normal? wire of reactor restart the unit
eliminated?
L correctly
Replace outdoor
mainboard AP1 N
End

Service Manual
2. IPM protection(H5), desynchronizing malfunction(H7), overcurrent of compressor phase current (P5) (AP1 below means
control board of outdoor unit)
● Is voltage input within the normal range
● If the control board AP1 is well connected with compressor COMP? If they are loosened? If the connection sequence is correct?
● Heat exchange of unit is not good (heat exchanger is dirty and unit radiating environment is bad);
● If the system pressure is too high?
● If the refrigerant charging amount is appropriate?
● If coil resistance of compressor is normal? Is compressor coil insulating to copper pipe well?
● If the work load of unit is heavy? If radiating of unit is good?
H5, H7 or P5 is
displayed after
turning on the unit
Measure if the voltage

input is within 180~265V N Repair power supply to make Restart the unit The unit starts
Y
with AC voltmeter the power voltage normal operation again
(see fig 30)
Y
N
The compressor Adjust it properly The unit starts

N Restart the unit Y
is well connected according to wiring operation again
with mainboard diagram 5.1
AP1?
Y
N
Heat exchanger is Clean the heat exchanger The unit starts

Y Restart the unit Y
blocked with dirt? to improve its performance operation again
N
N
Adjust refrigerant The unit starts

Check if system pressure Y Restart the unit Y
charging amount operation again
is too high?
Replace outdoor Does the unit

Y
mainboard AP1 work normally
Replace compressor
End

Service Manual
3. High temperature and overload protection (E8)(AP1 below means control board of outdoor unit)
● If the outdoor ambient temperature is in normal range;
● If the indoor and outdoor fan are running normally;
● If the radiating environment of indoor and outdoor unit is good.
E8 is displayed
If the outdoor Normal protection, please

Y use it after improving the Unit restarts Y
ambient temperature is higher
outdoor ambient temperature normally
than 53℃?
N N
Improve the radiating environment

If the radiating of indoor Y of unit (clean the heat exchanger Unit restarts Y
and outdoor unit is good? and remove surrounding obstacles) normally
N
N
If the indoor and outdoor Adjust the

Connect normally? Y
fan are running normally? connection
Y
Y
Replace Fan
Fan capacitor is broken? Y
capacitor
Replace outdoor
mainboard
N
Motor is broken? Y Replace Motor
Replace mainboard
End

Service Manual
4. Start-up failure (LC) (AP1 below means control board of outdoor unit)
● If the compressor wiring is correct?
● If the stop time of compressor is sufficient?
● If the compressor is damaged?
● If the refrigerant charging amount is too much?
Turn on the unit
The stop time is not sufficient and

If the stop time of compressor the high and low pressure of system
is more than 3min? is not balanced , please start the unit
after 3min
Check the connection situation

If the compressor wire of outdoor mainboard AP1 and
COMP(UVW) is well connected and compressor COMP, and the
connection sequence is correct? connect it according to wiring
diagram
Does the unit

start up normally?
If the refrigerant charging
amount is too much?
Charge the refrigerant

according to service
manual
Does the unit

start up normally?
Replace outdoor
mainboard AP1
Is the malfunction
eliminated?
Replace the
compressor
End

Service Manual
5. Overload and high discharge temperature malfunction

● If the electronic expansion valve is connected well? Is the electronic expansion valve damaged?
● If the refrigerant is leaked?
● The compressor overload protection terminal is not connected well with the mainboard?
● If the overload protector is damaged?
● Heat exchange of unit is not good? (heat exchanger is dirty and unit radiating environment is bad)
● Too much load of the system causes high temperature of compressor after working for a long time?
● Malfunction of discharge temperature sensor?

Service Manual
H3 or E4 is displayed
30min after power off the unit
If the overload protector SAT

is well connected?
No
Yes
Under ambient temperature,

test the resistance of overload protector with ohmmeter;
resistance value should be＜1000ohm
Yes
Connect wire
If the wiring terminal FA of electronic according to wiring
No
expansion valve is well connected? diagram
No
Yes
Replace EKV coil of electronic expansion valve Is the malfunction Yes

eliminated?
No
Check the situation of refrigerant; if there is leakage,

please charge refrigerant according to the service Is the malfunction Y
Yes
Replace overload eliminated?
manual
protector SAT
No
Compressor overload protection terminal is not

connected well with the mainboard; reconnect Is the malfunction Y
Yes
them correctly eliminated?
No
Heat exchange of unit is not good (heat exchanger
is dirty and unit radiating environment is bad); Is the malfunction Y
Yes
improve the radiating environment and clean the eliminated?
heat exchanger
No
Too much load of the system causes high temperature

of compressor after working for a long time; Is the malfunction Y
Yes
decrease the load for operation eliminated?
No
Replace outdoor
mainboard AP1
End

Service Manual
6. PFC (correction for power factor) malfunction (outdoor unit malfunction)

● Check if power plug is connected well with the socket
● Check if the reactor of outdoor unit is damaged?
start
If power plug is connected Is the malfunction

Y
Yes Connect the plug correctly
well with the socket eliminated?
No
Check the connection wire

between reactor mainboard N
No
and situation of connection
Reconnect the wire or

If there is short circuit or the replace the connection Power on and Is the malfunction
Y
Yes restart the unit
connection wire is loose? wire according to the eliminated?
wiring diagram.
No
Check the surface of reactor coil N

No
Replace the reactor Power on and Is the malfunction

If it is damaged? Y
Yes
restart the unit eliminated?
No
Replace outdoor
N
No
mainboard AP1
End

Service Manual
7. Communication malfunction (E6)

● Check if the connection wire and the built-in wiring of indoor and outdoor unit are connected well and without damage;
● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged?
E6
If the unit operates normally No

before malfunction
Yes Check the connection

Yes wire according to the
wiring diagram.
Check built-in wiring

If the connection wire
of indoor and outdoor
No is connected well?
unit
No
Replace the Reconnect the wire or

Yes If the wiring is
wire replace the connection
damaged?
wire according to the
wiring diagram.
No
Check the malfunction

Is the malfunction No type with communication
eliminated?
malfunction detector
Is the malfunction
eliminated?
Malfunction of outdoor Replace outdoor

Yes mainboard AP1
communication circuit
No
Replace indoor Is the malfunction

No
mainboard AP2 eliminated?
Yes
Yes
Yes End

Service Manual
9.3 Maintenance Method for Normal Malfunction

1. Air Conditioner Can't be Started Up
Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting
Confirm whether it's due to power failure. If yes,
No power supply, or poor After energization, operation indicator isn’t bright wait for power recovery. If not, check power
connection for power plug and the buzzer can't 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 isn't 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 it's 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.
Unit's 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
Unit't pressure is much lower than regulated
range. If refrigerant isn’t 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 can’t swing
details
Refer to troubleshooting for H6 for maintenance
Malfunction of the IDU fan motor The IDU fan motor can’t operate
method in details
Malfunction of the ODU fan motor The ODU fan motor can't operate
details
Malfunction of compressor Compressor can't operate
details
3. Horizontal Louver Can't 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 can't operate Repair or replace stepping motor
Others are all normal, while horizontal louver
Main board is damaged Replace the main board with the same model
can't operate
Service Manual
4. ODU Fan Motor Can't 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 Can't 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 it's 0
Cylinder of compressor is blocked Compressor can't 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
There's the sound of "PAPA"
expand and there's abnormal disappear after a few minutes.
sound
When turn on or turn off the unit,
there's 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'
unit or there're parts touching There's abnormal sound fro indoor unit position of indoor unit, tighten screws and stick
together inside the indoor unit damping plaster between connected parts
Foreign objects inside the outdoor Remove foreign objects. Adjust all parts'
unit or there're parts touching There's abnormal sound fro outdoor unit position of outdoor unit, tighten screws and
together inside the outdoor unit stick 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
15
35 36 37 39 14
34
13
12
FAN
16
MODE
ON/OFF
11 17
10 18
9
8
7
6
5
19
4
3 20
2 21
24
1 22
25
26
27
28
23 29
30
38
31
32
33
The component picture is only for reference; please refer to the actual product.

Service Manual
Part Code
Description
No. GWH09YD-S6DBA2A/I GWH12YD-S6DBA2A/I Qty
Product Code CB466N00100 CB466N00200
1 Front Panel 00000300008303 00000300008303 1
2 Filter Sub-Assy 11122089 11122089 2
3 Front Case Sub-Assy 00000200060 00000200060 1
4 Axile Bush 10542036 10542036 2
5 Guide Louver 10512501 10512501 1
6 Ring of Bearing 26152025 26152025 1
7 O-Gasket of Cross Fan Bearing 76512203 76512203 1
8 Cross Flow Fan 10352060 10352060 1
9 Air Louver(Manual) 10512501 10512501 1
10 Helicoid Tongue 26112512 26112512 1
11 Rear Case assy 00000100177 00000100177 1
12 Evaporator Support 24212177 24212177 1
13 Evaporator Assy 011001000472 011001000472 1
14 Wall Mounting Frame 01362026 01362026 1
15 Drainage Hose 05230014 05230014 1
16 Cold Plasma Generator 1114001602 1114001602 1
17 Rubber Plug (Water Tray) 76712012 76712012 1
18 Connecting pipe clamp 2611218801 2611218801 1
19 Crank 73012005 73012005 1
20 Stepping Motor 1521240212/1521210704 1521240212/1521210704 1
21 Motor Press Plate 26112511 26112511 1
22 Fan Motor 15012136 15012136 1
23 Screw Cover 2425201726 2425201726 3
24 Electric Box Assy 100002000983 100002000983 1
25 Electric Box 2011221102 2011221102 1
26 Lower Shield of Electric Box 01592139 01592139 1
27 Shield Cover of Electric Box 01592176 01592176 1
28 Display Board 300001000095 300001000095 1
29 Main Board 300002000101 300002000101 1
30 Terminal Board 42011233 42011233 1
31 Electric Box Cover 20112209 20112209 1
32 Electric Box Cover2 20112210 20112210 1
33 Shield Cover of Electric Box Cover 2 01202000099 01202000099 1
34 Connecting Cable 4002052317 4002052317 0
35 Connecting Cable / / /
36 Temperature Sensor 3900031302 3900031302 1
37 Remote Controller 30510137 30510137 1
38 Jumper 4202021911 4202021911 1
39 Detecting Plate 000409000001 000409000001 1
Above data is subject to change without notice.

Service Manual
Part Code
Description
No. GWH09YD-S6DBA2A/I Qty
Product Code CB466N00102
1 Front Panel 00000300008303 1
2 Filter Sub-Assy 11122089 2
3 Front Case Sub-Assy 00000200060 1
4 Axile Bush 10542036 2
5 Guide Louver 10512501 1
6 Ring of Bearing 26152025 1
7 O-Gasket of Cross Fan Bearing 76512203 1
8 Cross Flow Fan 10352060 1
9 Air Louver(Manual) 10512501 1
10 Helicoid Tongue 26112512 1
11 Rear Case assy 00000100177 1
12 Evaporator Support 24212177 1
13 Evaporator Assy 011001000472 1
14 Wall Mounting Frame 01362026 1
15 Drainage Hose 05230014 1
16 Cold Plasma Generator 1114001602 1
17 Rubber Plug (Water Tray) 76712012 1
18 Connecting pipe clamp 2611218801 1
19 Crank 73012005 1
20 Stepping Motor 1521240212 1
21 Motor Press Plate 26112511 1
22 Fan Motor 15012136 1
23 Screw Cover 2425201726 3
24 Electric Box Assy 100002004024 1
25 Electric Box 2011221102 1
26 Lower Shield of Electric Box 01592139 1
27 Shield Cover of Electric Box 01592176 1
28 Display Board 300001000095 1
29 Main Board 300002000858 1
30 Terminal Board 42011233 1
31 Electric Box Cover 20112209 1
32 Electric Box Cover2 20112210 1
33 Shield Cover of Electric Box Cover 2 01202000099 1
34 Connecting Cable 4002052317 0
35 Connecting Cable / /
36 Temperature Sensor 3900031302 1
37 Remote Controller 305001000139 1
38 Jumper 4202021911 1
39 Detecting Plate 000409000001 1

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. GWH09YD-S6DBA2A/O GWH12YD-S6DBA2A/O Qty
Product Code CB466W00100 CB466W00200
1 Front Grill 22413046 22413046 1
2 Cabinet 01433034P 01433034P 1
3 Axial Flow Fan 10333011 10333011 /
4 Brushless DC Motor 1501308511 1501308511 1
5 Clapboard Sub-Assy 01235094 01235094 1
6 Left Side Plate 01303169P 01303169P 1
7 Valve Cover 22243005 22243005 1
8 Main Board 300027000056 300027000056 1
9 Electric Box Assy 100002000997 100002000997 2
10 Coping 01253034P 01253034P 1
11 Rear Grill 01475022 01475022 1
12 Condenser Assy 011002000422 011002000422 1
13 Compressor and Fittings 00900100022901 00900100022901 1
14 4-Way Valve Assy 030152000214 030152000214 1
15 Cut off Valve 07130239 07130239 1
16 Cut off Valve 071302391 071302391 1
17 Drainage Joint 26113009 26113009 1
18 Big Handle 2623343106 2623343106 1
19 Valve Support Sub-Assy 01710400005P 01710400005P 1

Service Manual
11. Removal Procedure

Caution: discharge the refrigerant
11.1 Removal Procedure of Indoor Unit completely before removal.
Step Procedure
1.Remove filter
a. Open the panel. Panel
b. Loosen the clasp shown and

then pull the left filter and right filer
outwards to remove them.
Left filter and right filer
2.Remove horizontal louver
Push out the axile bush on horizontal

louver. Bend the horizontal louver with
hand and then separate the horizontal horizontal
louver from the crankshaft of step motor louver
to remove it.
Location of step motor
Axile bush
Horizontal louver

Service Manual
Step Procedure
3.Remove display and panel

Screws
a. Screws that are locking the display board.

Separate the display board from the front Display
Panel
panel.
b. Open the front panel; separate the panel

rotation shaft from the groove fixing the
front panel and then removes the front
panel.
Panel rotation
Groove
4.Remove electric box cover 2
Remove the screws on the electric box

cover to remove the electric box cover 2.
Electric box cover 2
Screw
5.Remove front case sub-assy
Remove the screws fixing front case.

Loosen the clasps of front case Life the
front case sub-assy upwards to remove
it.
Screws Front case sub-assy
Clasps
6. Remove vertical louver
Vertical louver
Loosen the connection clasps between
vertical louver and bottom case to
remove vertical louver.
Clasps

Service Manual
Step Procedure
7.Remove cold plasma generator
Cold plasma generator

Screws that are locking the cold plasma
Screw
generator.Separate the display board
from the evaporator assy.
8.Remove temperature sensor and grounding wire

Grounding wire Temperature sensor
Cut off the tieline which binding the

temperature sensor and grounding wire
on the evaporator, and then pull out the
indoor tube temperature sensor from the
evaporator.
Remove the screws at the connection
place between grounding wire and
evaporator.
9.Remove shield cover of electric box sub-assy
Loosen the connection clasps between

shield cover of electric box sub-assy and
electric box, and then remove the shield
cover of electric box sub-assy.
Shield cover of electric box sub-assy
10.Remove wiring terminal
Wiring terminal
Pull out the wiring terminal of motor and
of motor
wiring terminal of step motor from the
mainboard.
Note:
When pulling out the wiring terminal,
pay attention to loose the clasp and don’t
pull it so hard. Wiring terminal
of step motor

Service Manual
Step Procedure
11.Electric box assy
Remove the screw fixing electric box

assy and then remove the electric box
assy.
Electric box assy
Screw
12.Remove connection pipe clamp
Screw Connection pipe clamp

At the back of the unit, remove the
screw fixing connection pipe clamp
and then remove the connection pipe
clamp.
13.Remove evaporator assy Evaporator assy
Remove 3 screws fixing evaporator assy.

Adjust the position of connection pipe Screws
on evaporator slightly and then lift the
evaporator upwards to remove it. Screws
Connection pipe
14.Remove stepping motor
Remove the screw fixing step motor and

then remove the step motor.
Screws
Step motor

Service Manual
Step Procedure
15.Remove motor and cross flow blade
Motor clamp
a. Remove the screws fixing motor clamp Screws
and then remove the motor clamp.
b. Remove the screws at the connection

place of cross flow blade and motor; lift
the motor and cross flow blade upwards
to remove them.
Screw Motor
Cross flow
c. Remove the bearing holder sub-assy.
Holder sub-assy

Service Manual
11.2 Removal Procedure of Outdoor Unit
1. Before disassembly
2. Remove top cover
Remove the screws connecting top cover, left and

right side plate, as well as panel, to remove the top
top cover
cover.
3. Remove handle
Remove the screws connecting handle and right side

plate, to remove the handle.
handle

Service Manual
4. Remove panel and grille
Remove the screws fixing panel, to remove the panel.

Remove the screws connecting panel grille and panel,
loosen the clamp, to remove the panel grille.
panel
grille
5. Remove valve cover
Remove the screw fixing valve cover, to remove the

cover.
valve cover

Service Manual
6. Remove left side plate
Remove the screws fixing left side plate and

condenser support board, to remove the left side plate.
left side plate
7. Remove cross fan blade
Remove the screw nut fixing cross fan blade, remove

the gasket and spring cushion, to remove the cross
fan blade.
cross fan blade
8. Remove right side plate
Remove the screws fixing right side plate and valve

support, to remove the right side plate.
right side plate

Service Manual
9. Remove electric box assy
electric box cover

Remove screws fixing electric box assy and
mid-isolation board, loosen the bonding tie, pull off the
wiring terminal, lift to remove the electric box assy. electric box assy
10. Remove electric reactor
Remove the screws fixing electric reactor, to remove

the electric reactor.
electric
reactor
11. Remove motor and motor support
Remove the four tapping screws fixing motor, pull out

the contact tag of motor wiring, to remove the motor.
Remove the two tapping screws fixing motor support
and chassis, lift to remove the motor support.
motor support
motor

Service Manual
12. Remove mid-isolation board
Remove the screws connecting mid-isolation board,

chassis and condenser assy, to remove the
mid-isolation.
mid-isolation board
13. Remove four-way valve assy
four-way valve assy

Welding cut the spot weld of four-way valve assy,
compressor air suction/discharging valve and
condenser pipe outlet, lift to remove the four-way valve
assy. (Note: release the refrigerant before welding
cutting.)
14. Remove compressor
compressor
Remove the three feet screw nuts fixing compressor,
to remove the compressor.

Service Manual
15. Remove big and small valve assy
Remove screws connecting condenser assy and

chassis, to remove the condenser assy.
Remove the screws fixing big and small valve, to
remove the valves. small valve
big valve
condenser assy

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(°C) Celsius(°C) Celsius(°C)
temperature (°F) temperature (°F) temperature (°F)
(°F) (°F) (°F)
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(°C) Celsius(°C) Celsius(°C)
temperature (°F) temperature (°F) temperature (°F)
(°F) (°F) (°F)
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
● 5m, 7.5m, 8m.
2.Min length of connection pipeFor the unit with standard connection pipe of 5m, there is no limitation for themin length of
connection pipe. For the unit with standard connection pipe of 7.5m and 8m, the min length of connection pipe is 3m.
3.Max length of connection pipe（More details please refer to the specifications）
4.The additional refrigerant oil and refrigerant charging required after prolonging connection pipe
● After the length of connection pipe is prolonged for 10m at the basis of standard length, you should add 5ml of refrigerant oil for
each additional 5m of connection pipe.
● The calculation method of additional refrigerant charging amount (on the basis of liquid pipe):
● Basing on the length of standard pipe, add refrigerant according to the requirement as shown in the table. The additional
refrigerant charging amount per meter is different according to the diameter of liquid pipe. See Sheet 2.
● Additional refrigerant charging amount = prolonged length of liquid pipe X additional refrigerant charging amount per meter
Additional refrigerant charging amount for R32

Diameter of connection pipe Indoor unit throttl Outdoor unit throttle
Cooling only,cooling
Liquid pipe Gas pipe Cooling only(g / m) Cooling and heating(g / m)
and heating(g / m)
Ф6 Ф9.5 or Ф12 16 12 16
Ф6 or Ф9.5 Ф16 or Ф19 40 12 40
Ф12 Ф19 or Ф22.2 80 24 96
Ф16 Ф25.4 or Ф31.8 136 48 96
Ф19 / 200 200 200
Ф22.2 / 280 280 280
Note: The additional refrigerant charging amount in Sheet 2 is recommendedvalue, not compulsory.

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 (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 Indoor and Outdoor (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

JF00303370
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China 519070
Tel: (+86-756) 8522218 Fax: (+86-756) 8669426
Email: gree@gree.com.cn Http://www.gree.com
HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED

Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK
Tel: (852) 31658898 Fax: (852) 31651029

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Change for Life

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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

Part Ⅱ : Installation and Maintenance ..................................................30

Part Ⅰ : Technical Information

Model GWH09YD-S6DBA2A GWH12YD-S6DBA2A

Model of Outdoor Unit GWH09YD-S6DBA2A/O GWH12YD-S6DBA2A/O

2.2 Operation Characteristic Curve

Compressor Frequency(Hz) Compressor Frequency(Hz)

2.3 Capacity Variation Ratio According to Temperature

Outdoor temp. (°C)

2.4 Cooling and Heating Data Sheet in Rated Frequency

Rated cooling Pressure of gas pipe Inlet and outlet pipe

2.5 Noise Curve

Indoor fan motor rotating speed

3. Outline Dimension Diagram

3.2 Outdoor Unit

4. Refrigerant System Diagram 6HUYLFH0DQXDO

Strainer Electron Strainer Strainer

Symbol Symbol Color Symbol Symbol Color Symbol Name

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RIWHUPLQDO3 '& DQG 9 :

. . . / / /

5.2 PCB Printed Diagram

6. Function and Control

Introduction for Buttons on Remote Controller

(only for cooling and heating unit.

10. TEMP button

●Sleep 3- the sleep curve setting under Sleep mode by DIY:

Replacement of Batteries in Remote Controller

I feel Set fan speed

AUTO COOL DRY FAN HEAT

Introduction for special function

About swing left and right

3. Pressing + or - button, to set the desired temperature.

1. Press SLEEP button, to set sleep.

scheduled timer on or timer off.

displaying part of the unit (This function may be not

Cover of battery box

6.2 GREE+ App Operation Manual

Control Flow Chart

Requirement for User's smart phone:

iOS system Android system

Download and installation

GREE+ App Download Linkage

6.3 Ewpe Smart App Operation Manual

Control Flow Chart

intelligent Home Wi-Fi Cellular/

Home wireless router

Requirement for User's smart phone:

iOS system Android system

Download and installation

App Download Linkage

6.4 Brief Description of Modes and Functions

Tamb. Start cooling

Compressor 30S 30S

Indoor fan Set fan spee d

Installation and Maintenance 25

◆ When compressor is running (not including each malfunction and protection):

76(1625 ',63 ',63 &200$18$/ :,), / %8 %8

RIWHUPLQDO3'&DQG 9 :

. . . / / /