Gree GWH18RC-K3DNA3G User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
GWH18RC-K3DNA3G
GWH24RD-K3DNA3G
(Refrigerant:R410A)
Models:

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 ........................................................................................6
2.3 Capacity Variation Ratio According to Temperature .........................................................6
2.4 Cooling and Heating Data Sheet in Rated Frequency .....................................................7
2.5 Noise Curve......................................................................................................................7
3. Outline Dimension Diagram........................................................................8
3.1 Indoor Unit........................................................................................................................8
3.2 Outdoor Unit .....................................................................................................................9
4. Refrigerant System Diagram....................................................................10
5. Electrical Part.........................................................................................................11
5.1 Wiring Diagram...............................................................................................................11
5.2 PCB Printed Diagram .....................................................................................................14
6. Function and Control......................................................................................16
6.1 Remote Controller Introduction .....................................................................................16
6.2 Brief Description of Modes and Functions......................................................................20
Part Ⅱ: Installation and Maintenance .................................................29
7. Notes for Installation and Maintenance..........................................29
8. Installation................................................................................................................31
8.1 Installation Dimension Diagram......................................................................................31
8.2 Installation Parts-checking ............................................................................................33
8.3 Selection of Installation Location....................................................................................33
8.4 Electric Connection Requirement ..................................................................................33
8.5 Installation of Indoor Unit................................................................................................33
8.6 Installation of Outdoor Unit.............................................................................................36
8.7 Vacuum Pumping and Leak Detection ...........................................................................37
8.8 Check after Installation and Test Operation ...................................................................37

Service Manual
Table of Contents Table of Contents
9. Maintenance............................................................................................................38
9.1 Malfunction Display of Indoor Unit..................................................................................38
9.2 Procedure of Troubleshooting ........................................................................................40
9.3 Troubleshooting for Normal Malfunction.........................................................................57
10. Exploded View and Parts List ..............................................................59
10.1 Indoor Unit....................................................................................................................59
10.2 Outdoor Unit .................................................................................................................61
11. Removal Procedure.......................................................................................65
11.1 Removal Procedure of Indoor Unit ...............................................................................65
11.2 Removal Procedure of Outdoor Unit ............................................................................70
Appendix:........................................................................................................................81
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................81
Appendix 2: Conguration of Connection Pipe.....................................................................81
Appendix 3: Pipe Expanding Method ...................................................................................82
Appendix 4: List of Resistance for Temperature Sensor ......................................................83

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit
GWH18RC-K3DNA3G/I
GWH24RD-K3DNA3G/I
Outdoor Unit
GWH18MC-K3DNE3G/O
GWH24MD-K3DNE3G/O
Remote Controller
YAA1FB

2Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model GWH18RC-K3DNA3G
Product Code CB302002902
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode outdoor
Cooling Capacity W 5275(1260~6600)
Heating Capacity W 5800(1120~6800)
Cooling Power Input W 1625(380~2650)
Heating Power Input W 1760(350~2650)
Cooling Power Current A 7.2
Heating Power Current A 7.8
Rated Input W 2650
Rated Current A 11.8
Air Flow Volume(SH/H/M/L/SL) m3/h 850/780/650/550/-
Dehumidifying Volume L/h 1.80
EER W/W 3.25
COP W/W 3.30
SEER W/W 6.1
HSPF W/W /
Application Area m223-34
Indoor Unit
Model of indoor unit GWH18RC-K3DNA3G/I
Indoor Unit Product Code CB302N02902
Fan Type Cross-ow
Diameter Length(DXL) mm Φ98X710
Fan Motor Cooling Speed(SH/H/M/L/SL) r/min 1350/1200/1000/800/-
Fan Motor Heating Speed(SH/H/M/L/SL) r/min 1420/1250/1100/950/-
Output of Fan Motor W 20
Fan Motor RLA A 0.31
Fan Motor Capacitor μF 1.5
Evaporator Form Aluminum Fin-copper Tube
Pipe Diameter mm Φ7
Row-n Gap mm 2-1.4
Coil Length (LXDXW) mm 715X25.4X304.8
Swing Motor Model MP28VB
Output of Swing Motor W 2
Fuse A 3.15
Sound Pressure Level (SH/H/M/L/SL) dB (A) 45/43/37/33/-
Sound Power Level (SH/H/M/L/SL) dB (A) 58/53/50/45/-
Dimension (WXHXD) mm 945X298X211
Dimension of Carton Box (LXWXH) mm 1010X380X285
Dimension of Package (LXWXH) mm 1013X383X300
Net Weight kg 13
Gross Weight kg 16