Gree GWH18QD-K6DNB8B User manual

Service Manual
Models:
Change for life
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
Models: GWH18QD-K6DNB8B
GWH18QD-K6DNE4B
GWH18QD-K6DNC4B
GWH18QD-K6DND6B
GWH18QD-K6DNC6B
GWH18QD-K6DNC8B
(Refrigerant R32)

Service Manual
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
2.2 Capacity Curve in Different Outdoor Temperature ............................................................. 4
2.3 Cooling and Heating Data Sheet in Rated Frequency ....................................................... 4
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 GREE+ App Operation Manual ........................................................................................ 19
6.3 Ewpe Smart App Operation Manual................................................................................. 20
6.4 Brief Description of Modes and Functions........................................................................ 21
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 Requirements for electric connection .............................................................................. 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
Table of Contents

Service Manual
9. Maintenance.................................................................................................................41
9.1 Malfunction Display of Indoor Unit.......................................................................................41
9.2 Procedure of Troubleshooting ............................................................................................. 43
9.3 Maintenance method for normal malfunction ......................................................................61
10. Exploded View and Parts List ...................................................................63
10.1 Indoor Unit.........................................................................................................................63
10.2 Outdoor Unit ......................................................................................................................67
11. Removal Procedure............................................................................................ 69
11.1 Removal Procedure of Indoor Unit .................................................................................... 69
11.2 Removal Procedure of Outdoor Unit .................................................................................74
Appendix:.............................................................................................................................78
Appendix 1: Reference Sheet of Celsius and Fahrenheit ......................................................... 78
Appendix 2: Conguration of Connection Pipe..........................................................................78
Appendix 3: Pipe Expanding Method ........................................................................................79
Appendix 4: List of Resistance for Temperature Sensor ...........................................................80
Table of Contents

1
Technical Information
Service Manual
1. Summary
Indoor Unit:
GWH18QD-K6DNB8B/I GWH18QD-K6DNE4B/I
GWH18QD-K6DNC4B/I
GWH18QD-K6DNC8B/I GWH18QD-K6DNC6B/I
GWH18QD-K6DND6B/I
Part Ⅰ: Technical Information
Outdoor Unit:
GWH18AAD-K6DNA1B/O
Remote Controller:
YAN1F6 (WiFi)
Model list:
No. Model Product Code Indoor Unit Model Indoor Unit
Product Code Outdoor Unit Model Outdoor Unit
Product Code
Remote
Controller
1 GWH18QD-K6DNE4B CB470002400 GWH18QD-K6DNE4B/I CB470N02400
GWH18AAD-K6DNA1B/O CB476W00600 YAN1F6
(WiFi)
2 GWH18QD-K6DNC4B CB444007600 GWH18QD-K6DNC4B/I CB444N07600
3 GWH18QD-K6DND6B CB460005300 GWH18QD-K6DND6B/I CB460N05300
4 GWH18QD-K6DNB8B CB438007300 GWH18QD-K6DNB8B/I CB438N07300
5 GWH18QD-K6DNC4B CB444007601 GWH18QD-K6DNC4B/I CB444N07601
6 GWH18QD-K6DNB8B CB438007301 GWH18QD-K6DNB8B/I CB438N07301
7 GWH18QD-K6DNE4B CB470002401 GWH18QD-K6DNE4B/I CB470N02401
8 GWH18QD-K6DNC8B CB456006000 GWH18QD-K6DNC8B/I CB456N06000
9 GWH18QD-K6DNC6B CB443005300 GWH18QD-K6DNC6B/I CB443N05300

2Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model
1.GWH18QD-K6DNB8B 2.GWH18QD-K6DNE4B
3.GWH18QD-K6DNC4B 4.GWH18QD-K6DND6B
5.GWH18QD-K6DNC8B 6.GWH18QD-K6DNC6B
Product Code
1.CB438007300/CB438007301 2.CB470002400/CB470002401
3.CB444007600/CB444007601 4.CB460005300 5.CB456006000
6.CB443005300
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Outdoor
Cooling Capacity W 4600
Heating Capacity W 5200
Cooling Power Input W 1430
Heating Power Input W 1400
Cooling Power Current A 6.3
Heating Power Current A 6.2
Rated Input W 1700
Rated Current A 8
Air Flow Volume(SH/H/M/L/SL) m3/h 850/720/610/520/-
Dehumidifying Volume L/h 1.8
EER W/W 3.22
COP W/W 3.71
SEER W/W 6.1
HSPF W/W /
Application Area m221-31
Indoor Unit
Model of Indoor Unit
1.GWH18QD-K6DNB8B/I 2.GWH18QD-K6DNE4B/I
3.GWH18QD-K6DNC4B/I 4.GWH18QD-K6DND6B/I
5.GWH18QD-K6DNC8B/I 6.GWH18QD-K6DNC6B/I
Product Code of Indoor Unit
1.CB438N07300/CB438N07301 2.CB470N02400/CB470N02401
3.CB444N07600/CB444N07601 4.CB460N05300 5.CB456N06000
6.CB443N05300
Fan Type Cross-ow
Diameter Length(DXL) mm Ф106X706
Fan Motor Cooling Speed(SH/H/M/L/SL) r/min 1230/1130/1030/800/-
Fan Motor Heating Speed(SH/H/M/L/SL) r/min 1350/1200/1050/900/-
Output of Fan Motor W /
Fan Motor RLA A 0.35
Fan Motor Capacitor μF 2.5
Input of Heater W /
Evaporator Form Aluminum Fin-copper Tube
Pipe Diameter mm Ф7
Row-n Gap mm 2-1.4
Coil Length (LXDXW) mm 715X25.4X304.8
Swing Motor Model MP35CP
Output of Swing Motor W 2.5
Fuse A 3.15
Sound Pressure Level (SH/H/M/L/SL) dB (A) 48/45/39/34/-
Sound Power Level (SH/H/M/L/SL) dB (A) 58/55/49/44/-
Dimension (WXHXD) mm 970X300X225
Dimension of Carton Box (LXWXH) mm 1038X380X305
Dimension of Package (LXWXH) mm 1041X383X320
Net Weight kg 13.5
Gross Weight kg 16.5

3
Technical Information
Service Manual
The above data is subject to change without notice; please refer to the nameplate of the unit.
Outdoor Unit
Model of Outdoor Unit GWH18AAD-K6DNA1B/O
Product Code of Outdoor Unit CB476W00600
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD
Compressor Model QXF-B096zE190A
Compressor Oil FW68DA
Compressor Type Rotary
L.R.A. A 16.5
Compressor RLA A 4.21
Compressor Power Input W 943
Overload Protector /
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 Φ7
Rows-n Gap mm 2-1.4
Coil Length (LXDXW) mm 742X38.1X550
Fan Motor Speed rpm 900
Output of Fan Motor W 30
Fan Motor RLA A 0.4
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit m3/h 2200
Fan Type Axial-ow
Fan Diameter mm Φ438
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) 54/-/-
Sound Power Level (H/M/L) dB (A) 63/-/-
Dimension (WXHXD) mm 848X596X320
Dimension of Carton Box (LXWXH) mm 878X360X630
Dimension of Package (LXWXH) mm 881X363X645
Net Weight kg 34
Gross Weight kg 37
Refrigerant R32
Refrigerant Charge kg 0.77
Connection
Pipe
Length m 5
Gas Additional Charge g/m 16
Outer Diameter Liquid Pipe mm Φ6
Outer Diameter Gas Pipe mm Φ9.52
Max Distance Height m 10
Max Distance Length m 20
Note: The connection pipe applies metric diameter.

4Technical Information
Service Manual
2.2 Capacity Curve in Different Outdoor Temperature
2.3 Cooling and Heating Data Sheet in Rated Frequency
Heating
Rated heatling condition(°C)
(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
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
20/- 7/6 18K 3.5~3.8 in:75~85
out:37~43
in:1~3
out:2~5 Super High High
Rated cooling condition(°C)
(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
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
27/19 35/24 18K 0.8~1.0 in:8~11
out:11~14
in:75~85
out:37~43 Super High High
Cooling
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.
Cooling Heating
32 33 34 35 36 37 38 39 43 –15 –10 –5
40 41 42
100
105
95
90
85
80
75
70
65
60
55
50
110
100
90
80
70
60
50
40
05
710
Conditions
Indoor:DB27°C/WB19°C
Indoor air flow:Super High
Pipe length: 5m
Conditions
Indoor:DB20°C/WB15°C
Indoor air flow:Super High
Pipe length: 5m
Outdoor temp.(°C) Outdoor temp.(°C)
Capacity ratio (%)
Capacity ratio (%)
Cooling Heating
2.2 Operation Characteristic Curve
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

5
Technical Information
Service Manual
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
01
00
20

6Technical Information
Service Manual
104 685 181
140
190
38
Φ55 Φ55
38
133 542 174
43
43
80
143
Ф55Ф55
104 685 181
140
190
38
Φ55 Φ55
38
133 542 174
43
43
80
143
Ф55Ф55
3. Outline Dimension Diagram
3.1 Indoor Unit
Unit:mm
W
H
D
Model W H D
18K 970 300 225

7
Technical Information
Service Manual
3.2 Outdoor Unit
257
780
596
848
286
540
320
257
Unit:mm