Gree GWH18MC-K3DNB7G User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
GWH18MC-K3DNA2G
GWH18MC-K3DNA3G
GWH18MC-K3DNA5G
GWH18MC-K3DNB3G
GWH18MC-K3DNC9G
GWH18MC-K3DND3G
GWH18MC-K3DNE3G
GWH18MC-K3DNB7G
GWH18MC-K3DNA4G
Models: GWH24MD-K3DNA2G
GWH24MD-K3DNA3G
GWH24MD-K3DNA5G
GWH24MD-K3DNB3G
GWH24MD-K3DNC9G
GWH24MD-K3DND3G
GWH24MD-K3DNE3G
GWH18MC-K3DNA8G
GWH18MC-K3DNC1G
GWH18MC-K3DNC2G
GWH18MC-K3DNC5G
GWH24MD-K3DNA4G
GWH24MD-K3DNA5G
GWH24MD-K3DNA8G
GWH24MD-K3DNC1G
GWH24MD-K3DNC5G
GWH24MD-K3DNC2G
GWH24MD-K3DNA4G
(Refrigerant:R410A)

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 .......................................................................................13
2.3 Capacity Variation Ratio According to Temperature ........................................................13
2.4 Cooling and Heating Data Sheet in Rated Frequency ....................................................14
2.5 Noise Curve.....................................................................................................................14
3. Outline Dimension Diagram.......................................................................15
3.1 Indoor Unit.......................................................................................................................15
3.2 Outdoor Unit ....................................................................................................................16
4. Refrigerant System Diagram.....................................................................17
5. Electrical Part..........................................................................................................18
5.1 Wiring Diagram................................................................................................................18
5.2 PCB Printed Diagram......................................................................................................22
6. Function and Control.......................................................................................24
6.1 Remote Controller Introduction ......................................................................................24
6.2 Brief Description of Modes and Functions.......................................................................28
Part Ⅱ: Installation and Maintenance ..................................................37
7. Notes for Installation and Maintenance...........................................37
8. Installation.................................................................................................................39
8.1 Installation Dimension Diagram.......................................................................................39
8.2 Installation Parts-checking .............................................................................................41
8.3 Selection of Installation Location.....................................................................................41
8.4 Electric Connection Requirement ...................................................................................41
8.5 Installation of Indoor Unit.................................................................................................41
8.6 Installation of Outdoor Unit..............................................................................................44
8.7 Vacuum Pumping and Leak Detection ............................................................................45
8.8 Check after Installation and Test Operation ....................................................................45

Service Manual
Table of Contents Table of Contents
9. Maintenance.....................................................................................................................46
9.1 Malfunction Display of Indoor Unit...........................................................................................46
9.2 Procedure of Troubleshooting .................................................................................................48
9.4 Troubleshooting for Normal Malfunction..................................................................................65
10. Exploded View and Parts List.......................................................................67
10.1 Indoor Unit.............................................................................................................................67
10.2 Outdoor Unit ..........................................................................................................................84
11. Removal Procedure................................................................................................88
11.1 Removal Procedure of Indoor Unit ........................................................................................88
11.2 Removal Procedure of Outdoor Unit .....................................................................................93
Appendix:...............................................................................................................................104
Appendix 1: Reference Sheet of Celsius and Fahrenheit ...........................................................104
Appendix 2: Conguration of Connection Pipe............................................................................104
Appendix 3: Pipe Expanding Method ..........................................................................................105
Appendix 4: List of Resistance for Temperature Sensor .............................................................106

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit
E3 panel
C1 panel
B7 panel
C5 panel
C2 panel
D3 panel
A8 panel
C9 panel
B3 panel
A5 panel
A2 panel A3 panel

2Technical Information
Service Manual
Outdoor Unit
GWH18MC-K3DNE3G/O
Remote Controller
YT1F(MOTO)
FAN
MODE
IFEEL
CLOCK TIMER
ON
X-FAN TEMPTIMER
OFF
TURBO SLEEP LIGHT
GWH24MD-K3DNE3G/O
A4 panel