Gree GWH18AAC-K3NNA1A User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
Models: GWH18AAC-K3NNA1A
GWH18AAC-K3NNA2A
GWH24AAD-K3NNA1A
GWH24AAD-K3NNA2A
(Refrigerant R410A)

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 Capacity Curve in Different Outdoor Temperature ............................................................. 4
2.3 Cooling and Heating Data Sheet in Rated Frequency ....................................................... 4
3. Outline Dimension Diagram.......................................................................... 5
3.1 Indoor Unit.......................................................................................................................... 5
3.2 Outdoor Unit ....................................................................................................................... 6
4. Refrigerant System Diagram........................................................................ 7
5. Electrical Part............................................................................................................. 8
5.1 Wiring Diagram................................................................................................................... 8
5.2 PCB Printed Diagram ........................................................................................................11
6. Function and Control........................................................................................ 12
6.1 Remote Controller Introduction ....................................................................................... 12
6.2 Brief Description of Modes and Functions........................................................................ 16
Part Ⅱ: Installation and Maintenance ................................................... 21
7. Notes for Installation and Maintenance............................................ 21
8. Installation.................................................................................................................. 23
8.1 Installation Dimension Diagram........................................................................................ 23
8.2 Installation Parts-Checking .............................................................................................. 25
8.3 Selection of Installation Location...................................................................................... 25
8.4 Electric Connection Requirement..................................................................................... 25
8.5 Installation of Indoor Unit.................................................................................................. 25
8.6 Installation of Outdoor unit ............................................................................................... 28
8.7 Vacuum Pumping and Leak Detection ............................................................................. 29
8.8 Check after Installation and Test operation ...................................................................... 29
Table of Contents

Service Manual
9. Maintenance.................................................................................................................30
9.1 Error code............................................................................................................................30
9.2 Procedure of Troubleshooting .............................................................................................32
9.3 Maintenance method for normal malfunction ......................................................................37
10. Exploded View and Parts List ................................................................... 39
10.1 Indoor Unit.........................................................................................................................39
10.2 Outdoor Unit ......................................................................................................................43
11. Removal Procedure............................................................................................ 47
11.1 Removal Procedure of Indoor Unit ....................................................................................47
11.2 Removal Procedure of Outdoor Unit .................................................................................52
Appendix:.............................................................................................................................62
Appendix 1: Reference Sheet of Celsius and Fahrenheit .........................................................62
Appendix 2: Conguration of Connection Pipe..........................................................................62
Appendix 2: Pipe Expanding Method ........................................................................................63
Appendix 4: List of Resistance for Temperature Sensor ...........................................................64
Table of Contents

1
Technical Information
Service Manual
1.Summary
Indoor Unit:
GWH18AAC-K3NNA1A/I
GWH24AAD-K3NNA1A/I
GWH18AAC-K3NNA2A/I
GWH24AAD-K3NNA2A/I
Part Ⅰ: Technical Information
Outdoor Unit:
GWH24AAD-K3NNA1A/O
GWH18AAC-K3NNA1A/O
Remote Controller:
YAW1F

2Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model GWH18AAC-K3NNA1A
GWH18AAC-K3NNA2A
GWH24AAD-K3NNA1A
GWH24AAD-K3NNA2A
Product Code CA115014200
CA115014500
CA115014300
CA115014600
Power
Supply
Rated Voltage V~ 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
Power Supply Mode Indoor Indoor
Cooling Capacity W 4800 6150
Heating Capacity W 5000 6700
Cooling Power Input W 1495 1915
Heating Power Input W 1500 1856
Cooling Power Current A 6.81 8.49
Heating Power Current A 6.72 8.23
Rated Input W 2150 13.88
Rated Current A 10.96 5.5
Air Flow Volume(SH/H/M/L/SL) m3/h 650/560/480/350/- 900/800/700/600/-
Dehumidifying Volume L/h 1.8 1.8
EER W/W 3.21 3.21
COP W/W 3.61 3.61
SEER W/W / /
HSPF W/W / /
Application Area m221-31 23-34
Indoor Unit
Model of Indoor Unit GWH18AAC-K3NNA1A/I
GWH18AAC-K3NNA2A/I
GWH24AAD-K3NNA1A/I
GWH24AAD-K3NNA2A/I
Product Code of Indoor Unit CA115N14200
CA115N14500
CA115N14300
CA115N14600
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) mm Φ98X633 Φ106X706
Fan Motor Cooling Speed(SH/H/M/L/SL) r/min 1350/1200/1050/950/- 1350/1200/1050/900/-
Fan Motor Heating Speed(SH/H/M/L/SL) r/min 1300/1150/1000/900/- 1350/1200/1100/900/-
Output of Fan Motor W 20 35
Fan Motor RLA A 0.20 0.35
Fan Motor Capacitor μF 1.5 2.5
Input of Heater W / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Φ7 Φ7
Row-n Gap mm 2-1.4 2-1.4
Coil Length (LXDXW) mm 715X25.4X304.8 715X25.4X304.8
Swing Motor Model MP24HF MP35CP
Output of Swing Motor W 1.5 2.5
Fuse A 3.15 3.15
Sound Pressure Level (SH/H/M/L/SL) dB (A) 42/38/34/31/- 49/45/41/37/-
Sound Power Level (SH/H/M/L/SL) dB (A) 52/48/44/41/- 59/55/51/47/-
Dimension (WXHXD) mm 849X289X210 970X300X225
Dimension of Carton Box (LXWXH) mm 879X341X268 1017X366X285
Dimension of Package (LXWXH) mm 902X357X279 1020X369X295
Net Weight kg 11 13.5
Gross Weight kg 13 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 GWH18AAC-K3NNA1A/O GWH24AAD-K3NNA1A/O
Product Code of Outdoor Unit CA115W14200 CA115W14300
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO., LTD
ZHUHAI LANDA COMPRESSOR
CO.,LTD
Compressor Model QXA-D19F030 QXA-F232F050
Compressor Oil ATMOS-RB68EP or equivalent RB68EP
Compressor Type Rotary Rotary
L.R.A. A 38.00 40
Compressor RLA A 7.10 8.4
Compressor Power Input W 1540 1930
Overload Protector UP3-A6 UP3-27
Throttling Method Capillary Capillary
Operation Temp oC 16~30 16~30
Ambient Temp (Cooling) oC 18~48 18~48
Ambient Temp (Heating) oC -7~24 -7~24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Φ7.94 Φ7
Rows-n Gap mm 2-1.4 1-1.4
Coil Length (LXDXW) mm 735X38.1X508 613X38.1X660
Fan Motor Speed rpm 850 780
Output of Fan Motor W 35 68
Fan Motor RLA A 0.33 0.75
Fan Motor Capacitor μF 2.5 2.5
Air Flow Volume of Outdoor Unit m3/h 1800 2800
Fan Type Axial-ow Axial-ow
Fan Diameter mm Φ394.5 Φ460
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) 56/-/- 56/-/-
Sound Power Level (H/M/L) dB (A) 66/-/- 66/-/-
Dimension (WXHXD) mm 848X540X320 913X680X378
Dimension of Carton Box (LXWXH) mm 878X360X580 994X428X725
Dimension of Package (LXWXH) mm 881X363X595 997X431X740
Net Weight kg 39 50
Gross Weight kg 41.5 54
Refrigerant R410A R410A
Refrigerant Charge kg 1.26 1.45
Connection
Pipe
Length m 5 5
Gas Additional Charge g/m 15 15
Outer Diameter Liquid Pipe mm Φ6 Φ6
Outer Diameter Gas Pipe mm Φ12 Φ12
Max Distance Height m 10 10
Max Distance Length m 25 25
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 18/24K 3.5~3.8 in:75~85
out:37~43
in:1~3
out:2~5 Super High High
40
50
60
70
80
90
100
110
32 33 34 35 36 37 38 39 40 41 42 43 44 45
Outdoor temp.( ) Outdoor temp.( )
)
%
(
oitaryticapa
C
)%(oitaryticapaC
Condition
Indoor:DB27
°C WB19 °C
°C
°C
Indoor air flow: Super High
Pipe length:5m
157-7 -5 02
24
0
20
40
60
80
100
120
-10510
Condition Heating
Indoor:DB20
°C
Indoor air flow: Super High
Pipe length:5m
Cooling Heating
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 18/24K 0.85~1.0 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.

5
Technical Information
Service Manual
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
18K
24K
W
H
D
MODEL W H D
18K 849 289 210
24K 970 300 225

6Technical Information
Service Manual
848
763
540
320
268
Unit:mm
3.2 Outdoor Unit
931 378
847
086
549
843
300
Unit:mm
GWH24AAD-K3NNA1A/O
GWH18AAC-K3NNA1A/O

7
Technical Information
Service Manual
4. Refrigerant System Diagram
Cooling and heating model
Connection pipe specication:
Liquid pipe:1/4" (6mm)
Gas pipe:1/2" (12mm)
Indoor unit Outdoor unit
Indoor unit Outdoor unit
COOLING
HEATING
Accumlator
4-Way valve
COOLING
Discharge
Suction
Discharge
Suction
Heat
exchanger
(evaporator)
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Heat
exchanger
(condenser)
Valve
Valve
Valve
Valve
Liquid pipe
side
Gas pipe
side
Liquid pipe
side
Gas pipe
side
Compressor
Accumlator
Compressor
Strainer
Strainer
Capillary
StrainerCapillary