Gree GWH12QB-K6DNB8I User manual

Service Manual
Change for life
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
GWH12QB-K6DNB8I
GWH12QB-K6DNB2I
GWH12QB-K6DNB4I
GWH12QB-K6DNA1I
GWH12QB-K6DND6I
GWH12QB-K6DNA5I
GWH12QB-K6DND6I
GWH12QB-K6DNA3I
GWH12QB-K6DNC6I
GWH12QB-K6DNC4I
GWH12QB-K6DNC8I
(Refrigerant:R32)
Models:

Service Manual
Table of Contents
Table of Contents
Part Ⅰ: Technical Information.......................................................................1
1. Summary......................................................................................................................1
2. Specications..........................................................................................................3
2.1 Specication Sheet...........................................................................................................3
2.2 Operation Characteristic Curve ........................................................................................5
2.3 Capacity Variation Ratio According to Temperature .........................................................5
2.4 Cooling and Heating Data Sheet in Rated Frequency .....................................................6
2.5 Noise Curve......................................................................................................................6
3. Outline Dimension Diagram........................................................................7
3.1 Indoor Unit........................................................................................................................7
3.2 Outdoor Unit .....................................................................................................................8
4. Refrigerant System Diagram......................................................................9
5. Electrical Part.........................................................................................................10
5.1 Wiring Diagram...............................................................................................................10
5.2 PCB Printed Diagram .....................................................................................................14
6. Function and Control......................................................................................17
6.1 Remote Controller Introduction of YAN1F6(WiFi)...........................................................17
6.2 Remote Controller Introduction of YAP1FB2(WiFi) .......................................................22
6.3 Brief Description of Modes and Functions......................................................................27
6.4 GREE+ App Operation Manual ......................................................................................32
6.5 Ewpe Smart App Operation Manual ...............................................................................33
Part Ⅱ: Installation and Maintenance .................................................34
7. Notes for Installation and Maintenance..........................................34
8. Installation................................................................................................................38
8.1 Installation Dimension Diagram......................................................................................38
8.2 Installation Parts-checking ............................................................................................40
8.3 Selection of Installation Location....................................................................................40
8.4 Requirements for electric connection .............................................................................40
8.5 Installation of Indoor Unit................................................................................................40
8.6 Installation of Outdoor Unit.............................................................................................43
8.7 Vacuum Pumping and Leak Detection ...........................................................................44
8.8 Check after Installation and Test Operation ...................................................................44

Service Manual
Table of Contents Table of Contents
9. Maintenance............................................................................................................45
9.1 Malfunction Analysis.......................................................................................................45
9.2 Flashing LED of Indoor Unit/Outdoor and Primary Judgement ......................................49
9.3 How to Check Simply the Main Part...............................................................................58
10. Exploded View and Parts List ..............................................................72
10.1 Indoor Unit....................................................................................................................72
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:........................................................................................................................89
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................89
Appendix 2: Conguration of Connection Pipe.....................................................................89
Appendix 3: Pipe Expanding Method ...................................................................................90
Appendix 4: List of Resistance for Temperature Sensor ......................................................91

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit:
GWH12QB-K6DNB8I/I GWH12QB-K6DNB2I
GWH12QB-K6DNB4I/I
GWH12QB-K6DND6I/I GWH12QB-K6DNA5I/I
GWH12QB-K6DND6I/I
GWH12QB-K6DNC6I/I
GWH12QB-K6DNC8I/I
GWH12QB-K6DNA3I/I
GWH12QB-K6DNC4I/I
GWH12QB-K6DNA1I/I

2Technical Information
Service Manual
Remote Controller: YAN1F6(WiFi) YAP1FB2(WiFi)
Outdoor Unit:
GWH12QB-K6DNB8I/O
WiFi
No Model Product code Remote Controller
1 GWH12QB-K6DNB8I CB438006800/CB438006801
YAN1F6(WiFi)
2 GWH12QB-K6DNB2I CB432012300
3 GWH12QB-K6DNB4I CB434010600/CB434010601
4 GWH12QB-K6DNA1I CB419015000
5 GWH12QB-K6DND6I CB460005100
6 GWH12QB-K6DNA5I CB425011800
7 GWH12QB-K6DND6I CB460005101
8 GWH12QB-K6DNA3I CB424006500
9 GWH12QB-K6DNC8I CB456006200
10 GWH12QB-K6DNC6I CB443005400
11 GWH12QB-K6DNC4I CB444007501 YAP1FB2(WiFi)
12 GWH12QB-K6DNB8I CB438006802
Model List:

3
Technical Information
Service Manual
Model
1.GWH12QB-K6DNB8I 2.GWH12QB-K6DNB2I
3.GWH12QB-K6DNB4I 4.GWH12QB-K6DNA1I
5.GWH12QB-K6DND6I 6.GWH12QB-K6DNA5I
7.GWH12QB-K6DND6I 8.GWH12QB-K6DNA3I
9. GWH12QB-K6DNC6I 10.GWH12QB-K6DNC4I
11.GWH12QB-K6DNC8I 12.GWH12QB-K6DNB8I
Product Code
1.CB438006800/CB438006801 2.CB432012300
3.CB434010600/CB434010601 4.CB419015000
5.CB460005100 6.CB425011800 7.CB460005101
8.CB424006500 9CB443005400 10.CB444007501
11.CB456006200 12.CB438006802
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Outdoor
Cooling Capacity W 3200
Heating Capacity W 3500
Cooling Power Input W 997
Heating Power Input W 970
Cooling Current Input A 4.42
Heating Current Input A 4.30
Rated Input W 1500
Rated Current A 6.21
Air Flow Volume(SH/H/M/L/SL) m3/h 560/480/410/290/-
Dehumidifying Volume L/h 1.4
EER W/W 3.21
COP W/W 3.61
SEER 6.10
SCOP(Average/Warmer/Colder) 4.00
HSPF /
Application Area m215-22
Indoor
Unit
Indoor Unit Model
1.GWH12QB-K6DNB8I/I 2.GWH12QB-K6DNB2I/I
3.GWH12QB-K6DNB4I/I 4.GWH12QB-K6DNA1I/I
5.GWH12QB-K6DND6I/I 6.GWH12QB-K6DNA5I/I
7.GWH12QB-K6DND6I/I 8.GWH12QB-K6DNA3I/I
9.GWH12QB-K6DNC6I/I 10.GWH12QB-K6DNC4I/I
11.GWH12QB-K6DNC8I 12.GWH12QB-K6DNB8I/I
Indoor Unit Product Code
1.CB438N06800/CB438N06801 2.CB432N12300
3.CB434N10600/CB434N10601 4.CB419N15000
5.CB460N05100 6.CB425N11800 7.CB460N05101
8.CB424N06500 9.CB443N05400 10.CB444N07501
11.CB456N06200 12.CB438N06802
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Ф98X580
Cooling Speed(SH/H/M/L/SL) r/min 1350/1200/1050/750/-
Heating Speed(SH/H/M/L/SL) r/min 1350/1200/1050/850/-
Fan Motor Power Output W 20
Fan Motor RLA A 0.215
Fan Motor Capacitor μF 1
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Ф5
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length(LXDXW) mm 584X22.8X266.7
Swing Motor Model MP24AA
Swing Motor Power Output W 1.5
Fuse Current A 3.15
Sound Pressure Level(SH/H/M/L/SL)dB (A) 41/37/33/25/-
Sound Power Level(SH/H/M/L/SL) dB (A) 55/47/43/35/-
Dimension(WXHXD) mm 790X275X200
Dimension of Carton Box(LXWXH) mm 863X268X352
Dimension of Package(LXWXH) mm 866X271X367
Net Weight kg 9
Gross Weight kg 11
2. Specications
2.1 Specication Sheet

4Technical Information
Service Manual
Outdoor
Unit
Model of Outdoor Unit GWH12QB-K6DNB8I/O
Product Code of Outdoor Unit CB438W06800
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD
Compressor Model QXF-B096zE190A
Compressor Oil FW68DA
Compressor Type Rotary
L.R.A. A 20.0
Compressor RLA A 4.21
Compressor Power Input W 943
Overload Protector 1NT11L-6233
Throttling Method Capillary
Operation temp oC 16~30
Ambient temp (cooling) oC -15~43
Ambient temp (heating) oC -15~24
Condenser Form Aluminum Fin-copper Tube
Pipe Diameter mm Ф7.94
Rows-n Gap mm 1-1.4
Coil Length (LXDXW) mm 731X19.05X550
Fan Motor Speed rpm 900
Output of Fan Motor W 30
Fan Motor RLA A 0.36
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit m3/h 2200
Fan Type Axial-ow
Fan Diameter mm Ф438
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating
Pressure for the Discharge Side MPa 4.3
Permissible Excessive Operating
Pressure for the Suction Side MPa 2.5
Sound Pressure Level (H/M/L) dB (A) 52/-/-
Sound Power Level (H/M/L) dB (A) 62/-/-
Dimension (WXHXD) mm 848X596X320
Dimension of Carton Box (LXWXH) mm 878X360X630
Dimension of Package (LXWXH) mm 881X363X645
Net Weight kg 31
Gross Weight kg 34
Refrigerant R32
Refrigerant Charge kg 0.59
Connection
Pipe
Length m 5
Gas Additional Charge g/m 16
Outer Diameter Liquid Pipe mm Ф6
Outer Diameter Gas Pipe mm Ф9.52
Max Distance Height m 10
Max Distance Length m 20
Note: The connection pipe applies metric diameter.
The above data is subject to change without notice; please refer to the nameplate of the unit.

5
Technical Information
Service Manual
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
Cooling Heating
01020304050607090 0102030405060708090100 12
0
110
80
11
10
9
8
7
6
5
4
3
2
1
0
11
10
9
8
7
6
5
4
3
2
1
0
220V
230V
240V
220V
230V
240V
Current (A)
Current (A)
Conditions
Indoor:DB27°C/WB19°C
Outdoor:DB35°C/WB24°C
Indoor air flow:Super High
Pipe length:5m
Conditions
Indoor:DB20°C/WB15°C
Outdoor:DB7°C/WB6°C
Indoor air flow:Super High
Pipe length:5m
Compressor speed (rps) Compressor speed (rps)
Cooling Heating
32 33 34 35 36 37 38 39 43
40 41 42
100
105
95
90
85
80
75
70
65
60
55
50
Conditions
Indoor:DB27°C/WB19°C
Indoor air flow:Super High
Pipe length: 5m
Outdoor temp.(°C)
Capacity ratio (%)
30
40
50
60
70
80
90
100
110
120
10
750-5-10-15-20
Outdoor temp.(oC)
Capacity ratio(%)
Conditions
Indoor:DB20°C/WB15°C
Indoor air flow:Super High
Pipe length: 5m
Cooling Heating

6Technical Information
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency
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: 5 m.
Cooling:
Heating:
Rated cooling
condition(oC) (DB/WB) Model
Pressure of gas pipe
connecting indoor
and outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed
of indoor
unit
Fan speed
of outdoor
unit
Compressor
frequency
(Hz)
Indoor Outdoor P (MPa) T1 (oC) T2 (oC)
27/19 35/24 12K 0.8 ~ 1.1 11 to 14 38 to 41 Super High High 72
Rated heating
condition(oC) (DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed
of indoor
unit
Fan speed
of outdoor
unit
Compressor
frequency
(Hz)
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
20/15 7/6 12K 2.8 ~ 3.2 38 to 41 2 to 5 Super High High 77
2.5 Noise Curve
Indoor side noise
Outdoor side noise
Indoor fan motor rotating speed Compressor frequency/Hz
Low Middle High Supper High
Noise/dB(A)
Noise/dB(A)
70
60
50
30
40
20
50
40
30
02040608
0100
20
18K

7
Technical Information
Service Manual
W
D
H
90
150
54
168.5 462 159.5
Φ55 Φ55
54
104 685 181
140
190
38
Φ55 Φ55
38
3. Outline Dimension Diagram
3.1 Indoor Unit
Unit:mm
Unit:mm
Models W H D
12K 790 275 200

8Technical Information
Service Manual
3.2 Outdoor Unit
Unit:mm
257
780
596
848
286
540
320
257

9
Technical Information
Service Manual
4. Refrigerant System Diagram
Indoor unit Outdoor unit
COOLING
HEATING
4-Way valve
Discharge
Suction
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Strainer CapillaryStrainer
Accumlator
Compressor
Connection pipe specication:
Liquid pipe:1/4" (6mm)
Gas pipe:3/8" (9.52mm)
Cooling and heating model

10 Technical Information
Service Manual
5. Electrical Part
5.1 Wiring Diagram
● Indoor Unit
●Instruction
Symbol Symbol Color Symbol Symbol Color Symbol Name
WH White GN Green CAP Jumper cap
YE Yellow BN Brown COMP Compressor
RD Red BU Blue Grounding wire
YEGN Yellow/Green BK Black / /
VT Violet OG Orange / /
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.
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GWH12QB-K6DNA5I/I GWH12QB-K6DND6I/I GWH12QB-K6DNA3I/I GWH12QB-K6DNC6I/I
GWH12QB-K6DNC8I/I
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11
Technical Information
Service Manual
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12 Technical Information
Service Manual
GWH12QB-K6DNB8I/I(CB438N06802)
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13
Technical Information
Service Manual
● Outdoor Unit
These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit.
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14 Technical Information
Service Manual
5.2 PCB Printed Diagram
Indoor Unit
All models except GWH12QB-K6DNC4I/I GWH12QB-K6DNB8I/I
● Top view
● Bottom view
NO. Name
1
2
3
Communication wire
Live wire
4
Fuse
5
Neutral wire
6
PG fan interface
Auto button
up&down swing interface
Interface of PG feedback
7
8
9
10
11
Needle stand for WiFi
12
Interface of temperature sensor
Interface of display board
Jumper
13
2
1
3
4
10
9
11
12
68
7
513 14
Neutral wire for health function
(Applicable for some models)
14 Live wire for health
(Applicable for some models)

15
Technical Information
Service Manual
Indoor Unit
No Name
1Interface of communication wire for
indoor unit and outdoor unit
2Interface of live wire
3Interface of health function neutral wire
(Only for the mode with this function)
4Interface of neutral wire
5 Interface of fan
6Interface of health function live wire
(Only for the mode with this function)
7Jumper cap
8Auto button
9 Up&down swing interface
10 Feedback interface of indoor unit
11 Fuse
12 Interface of wi
13 Needle stand for tube temperature
sensor
14 Display interface
15 Gateway interface(Only for the mode
with this function)
● Top view
● Bottom view
1
2
11
34 5 678910
12
13
14
15
GWH12QB-K6DNC4I/I GWH12QB-K6DNB8I/I

16 Technical Information
Service Manual
Outdoor Unit
● Top view
● Bottom view
No. Name
1 Interface of compressor wire
2 Interface of reactor
3Fan terminal
4Interface of 4-way valve
5Terminal of electronic expansion valve
6Grounding wire
7Live wire
8Neutral wire
9Communication wire
10 Overload interface of compressor
11 Interface of temperature sensor
2
34
6
7
8
5
9
10
11
1

17
Technical Information
Service Manual
6. Function and Control
6.1 Remote Controller Introduction of YAN1F6(WiFi)
Buttons on Remote Controller
Introduction for icons on display screen
Introduction for buttons on remote controller
WiFi
1
5
3
6
8
10
12
11
9
7
4
2
1
2
3
4
5
6
7
8
9
10
11
12
ON/OFF button
MODE button
FAN button
SWING button
TURBO button
TEMP button
WiFi button
LIGHT button
CLOCK button
TIMER ON / TIMER OFF
button
SLEEP button
▲/ button
▲
WiFi
Send signal
Turbo mode
8℃ heating function
Set temperature
Set time
TIMER ON / TIMER OFF
Child lock
Up & down swing
Set fan speed
Light
Temp. display type
:Set temp.
:Outdoor ambient temp.
:Indoor ambient temp.
Sleep mode
Clock
Heat mode
Fan mode
Dry mode
Cool mode
Auto mode
Operation mode
I feel
Note:
● This is a general use remote controller, it could be used for the air conditionerswith multifunction; For some function, which the
model doesnt have, if pressthe corresponding button on the remote controller that the unit will keep theoriginal running status.
● After putting through the power, the air conditioner will give out a sound. Operation indicator is ON (red indicator, the colour is
different for different models).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 corre- sponding 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.
WIFI(This is a general remote controller.Some models have this
function while some do not. Please refer to the actual models.)