Gree GWH12QB-K3DNA6O User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
Models: GWH12QB-K3DNA5D(WIFI)
GWH12QB-K3DNC4D(WIFI)
GWH12QB-K3DNE2D(WIFI)
GWH12QB-K3DNA6D(WIFI)
GWH18QD-K3DNA5E(WIFI)
GWH18QD-K3DNA6E(WIFI)
GWH18QD-K3DNC4E(WIFI)
GWH18QD-K3DNE2E(WIFI)
(Refrigerant:R410A)

Service Manual
Table of Contents
Table of Contents
Part Ⅰ: Technical Information.......................................................................1
1. Summary......................................................................................................................1
2. Specications..........................................................................................................2
2.1 Specication 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 .....................................................................................................12
6. Function and Control......................................................................................14
6.1 Remote Controller Introduction .....................................................................................14
6.2 Operation of Smart Control (Smart Phone, Tablet PC) For Gree ...................................18
6.3 Operation of Smart Control (Smart Phone, Tablet PC) .................................................30
6.4 Brief Description of Modes and Functions......................................................................42
Part Ⅱ: Installation and Maintenance .................................................51
7. Notes for Installation and Maintenance..........................................51
8. Installation................................................................................................................53
8.1 Installation Dimension Diagram......................................................................................53
8.2 Installation Parts-checking ............................................................................................55
8.3 Selection of Installation Location....................................................................................55
8.4 Electric Connection Requirement ..................................................................................55
8.5 Installation of Indoor Unit................................................................................................55
8.6 Installation of Outdoor Unit.............................................................................................58
8.7 Vacuum Pumping and Leak Detection ...........................................................................59
8.8 Check after Installation and Test Operation ...................................................................59

Service Manual
Table of Contents Table of Contents
9. Maintenance............................................................................................................60
9.1 Error Code List ...............................................................................................................60
9.2 Troubleshooting for Main Malfunction ............................................................................71
9.3 Troubleshooting for Normal Malfunction.........................................................................85
10. Exploded View and Parts List ..............................................................87
10.1 Indoor Unit....................................................................................................................87
10.2 Outdoor Unit .................................................................................................................95
11. Removal Procedure.......................................................................................97
11.1 Removal Procedure of Indoor Unit ...............................................................................97
11.2 Removal Procedure of Outdoor Unit ..........................................................................102
Appendix:......................................................................................................................106
Appendix 1: Reference Sheet of Celsius and Fahrenheit ..................................................106
Appendix 2: Conguration of Connection Pipe...................................................................106
Appendix 3: Pipe Expanding Method .................................................................................107
Appendix 4: List of Resistance for Temperature Sensor ....................................................108

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit
A6 Panel A5 Panel
C2 Panel E2 Panel
GWH12QB-K3DNA6D/O
GWH18QD-K3DNA6E/O
Outdoor Unit
Remote Controller
YAN1F1

2Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model
1.GWH12QB-K3DNA6D
2.GWH12QB-K3DNC4D
3.GWH12QB-K3DNE2D
4.GWH12QB-K3DNA5D
1.GWH18QD-K3DNA6E
2.GWH18QD-K3DNA5E
3.GWH18QD-K3DNC4E
4.GWH18QD-K3DNE2E
Product Code
1.CB427004702 CB427004703
2.CB444001502
3.CB462000201
4.CB425007001
1.CB427006400 CB427006401
2.CB425007100
3.CB444002900
4.CB462000300
Power
Supply
Rated Voltage V~ 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity(Min~Max) W 3200 4600
Heating Capacity(Min~Max) W 3400 5000
Cooling Power Input(Min~Max) W 997 1430
Heating Power Input(Min~Max) W 942 1380
Cooling Current Input A 4.50 6.34
Heating Current Input A 4.4 6.12
Rated Input W 1500 1860
Rated Current A 7.2 7.45
Air Flow Volume(SH/H/M/L/SL) m3/h 560/480/410/290/-850/720/610/520/-
Dehumidifying Volume L/h 1.4 1.8
EER W/W 3.21 3.22
COP W/W 3.61 3.62
SEER 6.1 6.1
SCOP / /
Application Area m215-22 21-31
Indoor
Unit
Indoor Unit Model
1.GWH12QB-K3DNA6D/I
2.GWH12QB-K3DNC4D/I
3.GWH12QB-K3DNE2D/I
4.GWH12QB-K3DNA5D/I
1.GWH18QD-K3DNA6E/I
2.GWH18QD-K3DNA5E/I
3. GWH18QD-K3DNC4E/I
4.GWH18QD-K3DNE2E/I
Indoor Unit Product Code
1.CB427N04702 CB427N04703
2.CB444N01502
3.CB462N00200
4.CB425N07001
1.CB427N06400 CB427N06401
2.CB425N07100
3. CB444N02900
4.CB462N00300
Fan Type Cross-ow Cross-ow
Fan Diameter Length(DXL) mm Ф98X580 Ф106X706
Cooling Speed(SH/H/M/L/SL) r/min 1350/1200/1050/750/- 1230/1130/1030/800/-
Heating Speed(SH/H/M/L/SL) r/min 1350/1200/1050/850/- 1350/1200/1050/900/-
Fan Motor Power Output W 20 /
Fan Motor RLA A 0.215 0.35
Fan Motor Capacitor μF 1 2.5
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Ф5Ф7
Evaporator Row-n Gap mm 2-1.4 2-1.4
Evaporator Coil Length(LXDXW) mm 584X22.8X266.7 715X25.4X304.8
Swing Motor Model MP24AA MP35CJ
Swing Motor Power Output W 1.5 2.5
Fuse Current A 3.15 3.15
Sound Pressure Level(SH/H/M/L/SL) dB (A) 42/37/34/28/- 45/41/37/33/-
Sound Power Level(SH/H/M/L/SL) dB (A) 55/47/44/38/- 58/53/50/45/-
Dimension(WXHXD) mm 790X275X200 970X300X224
Dimension of Carton Box(LXWXH) mm 850X339X262 1038X380X305
Dimension of Package(LXWXH) mm 852X355X273 1041X383X320
Net Weight kg 9 13.5
Gross Weight kg 11 16.5

3
Technical Information
Service Manual
Outdoor
Unit
Model of Outdoor Unit GWH12QB-K3DNA6D/O GWH18QD-K3DNA6E/O
Product Code of Outdoor Unit CB427W04701 CB427W06400
Compressor Manufacturer/Trademark Zhuhai Landa Compressor Co.; Ltd. Zhuhai Landa Compressor Co.; Ltd.
Compressor Model QXA-B102zE190 QXA-A091zE190
Compressor Oil RB68EP FVC68D or RB68EP
Compressor Type Rotary Rotary
L.R.A. A 35.00 35.00
Compressor RLA A 4.80 4.80
Compressor Power Input W 1020 1020
Overload Protector / /
Throttling Method Capillary Capillary
Operation temp oC 16~30 16~30
Ambient temp (cooling) oC -15~48 -15~48
Ambient temp (heating) oC -22~24 -22~24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Ф7.94 Ф7
Rows-n Gap mm 1-1.4 1-1.4
Coil Length (LXDXW) mm 731X19.05X550 742X38.1X550
Fan Motor Speed rpm 900 900
Output of Fan Motor W 30 30
Fan Motor RLA A 0.4 0.4
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit m3/h 2200 2200
Fan Type Axial-ow Axial-ow
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
Pressure for the Discharge Side MPa 4.3 4.3
Permissible Excessive Operating
Pressure for the Suction Side MPa 2.5 2.5
Sound Pressure Level (H/M/L) dB (A) 54/-/- 54/-/-
Sound Power Level (H/M/L) dB (A) 63/-/- 63/-/-
Dimension (WXHXD) mm 842X596X320 842X596X320
Dimension of Carton Box (LXWXH) mm 878X360X630 878X360X630
Dimension of Package (LXWXH) mm 881X363X645 881X363X645
Net Weight kg 29.5 33
Gross Weight kg 32.5 36
Refrigerant R410A R410A
Refrigerant Charge kg 0.90 1.1
Connection
Pipe
Length m 5 5
Gas Additional Charge g/m 20 20
Outer Diameter Liquid Pipe mm Ф6Ф6
Outer Diameter Gas Pipe mm Ф9.52 Ф9.52
Max Distance Height m 10 10
Max Distance Length m 20 25
Note: The connection pipe applies metric diameter.
The above data is subject to change without notice; please refer to the nameplate of the unit.

4Technical Information
Service Manual
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
01020304050607090010 20 30 40 50 60 70 80 90 100 120110
80
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
220V
230V
240V
220V
230V
240V
01020304050607090010 20 30 40 50 60 70 80 90 100
120
110
80
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
220V
230V
240V
220V
230V
240V
Conditions
Indoor: DB27°C/WB19°C
Outdoor: DB35°C/WB24°C
Indoor air flow: High
Pipe length: 5m
Conditions
Indoor: DB27°C/WB19°C
Outdoor: DB35°C/WB24°C
Indoor air flow: High
Pipe length: 5m
Conditions
Indoor: DB20°C/WB15°C
Outdoor: DB7°C/WB6°C
Indoor air flow: High
Pipe length: 5m
Conditions
Indoor: DB20°C/WB15°C
Outdoor: DB7°C/WB6°C
Indoor air flow: High
Pipe length: 5m
Cooling Heating
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
750-5-10-15-22
Outdoor temp.(oC)
Capacity ratio(%)
Conditions
Indoor:DB20°C/WB15°C
Indoor air flow:Super High
Pipe length: 5m
Cooling Heating

5
Technical Information
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency
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
18K 0.8 ~ 1.0 12 to 14 80 to 40 52
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 (oC) T2 (oC)
20/15 7/6
12K 2.8 ~ 3.2 38 to 41 2 to 5
Super High High
77
18K 2.2 ~ 2.4 70 to 40 1 to 5 65
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:
2.5 Noise Curve
Indoor side noise
60
50
40
30
20
10
0
Indoor Fan Motor Rotating Speed
Noice/dB(A)
low Middle High Super High
Outdoor side noise
Compressor frequency/Hz
Noise/dB(A)
70
60
50
40
30
02040608
0100
20
18K12K

6Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
Unit:mm
104 685 181
140
190
38
Φ55 Φ55
38
90
150
54
168.5 462 159.5
Φ55 Φ55
54
W
D
H
12K
18K
Models W H D
12K 790 275 200
18K 970 300 224

7
Technical Information
Service Manual
3.2 Outdoor Unit
Unit:m
m
540
297
842 257
320
596
763

8Technical Information
Service Manual
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
4. Refrigerant System Diagram
Connection pipe specication:
Liquid pipe:1/4" (6mm)
Gas pipe:3/8" (9.52mm)
Cooling and heating model

9
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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GWH18QD-K3DNA5E/I

10 Technical Information
Service Manual
● Outdoor Unit
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11
Technical Information
Service Manual
These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
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12 Technical Information
Service Manual
5.2 PCB Printed Diagram
Indoor Unit
● Top view
● Bottom view
1 Neutral wire terminal
2Interface of health function neutral wire
3Motor needle stand
4Interface of health function live wire
5Auto button
6 Up&down swing motor
7Interface of up & down swing motor
8WIFI
Fuse
9 Temperature sensor
10 Terminal for display board connection
11 Jump
12 Terminal with outdoor unit communicatio
n
wire
13
14
Live wire terminal
12 34
567
8
9
11
12
13
14
10

13
Technical Information
Service Manual
1
2
3411
5
6
7
8
9
10
Outdoor Unit
● Top view
● Bottom view
No. Name
1 Reactor wiring terminal
2 Compressor wiring terminal
3Terminal of outdoor unit temperature
sensor
4Compressor overload protection
terminal
5Terminal with indoor unit communication
wire
6Terminal of power supply live wire
terminal
7Terminal of power supply neutral wire
8Interface of earthing wire
9Terminal of outdoor fan
10 Interface of 4-way valve
11 Terminal of electronic expansion valve

14 Technical Information
Service Manual
6. Function and Control
6.1 Remote Controller Introduction
Introduction for icons on display screen
Introduction for buttons on remote controller
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
I FEEL button
LIGHT button
CLOCK button
TIMER ON / TIMER OFF
button
SLEEP button
▲/ 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 doesnt 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 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
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
WIFI
WIFI

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Technical Information
Service Manual
Press this button to turn on the unit. Press this button again to turn off the unit.
Press this button to increase set temperature. Holding it down above 2 seconds rapidly increases set temperature.
In AUTO mode, set temperature is not adjustable.
AUTO
COOL DRY FAN HEAT*
OFF
Caution:

16 Technical Information
Service Manual
Combination “MODE” and “TURBO” buttons：
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 controller will send WIFI reset code and then the WIFI function will be turned on. WIFI function is defaulted ON
after energization of the remote controller.
12.TURBO button
About WIFI fuction

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Technical Information
Service Manual
battery
Cover of battery box
remove
reinstall
● 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.
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.
Note: