Gree GWC09AA, Installation And Service Manual

Page: 4 / 136

GREE Service Manual GWC09AA / K5NNA6A Page 4
Table of Content - 2
Refrigerant circuit commissioning………………................... 068 Service label……………………………………................. 103
First operation of the system……………………................... 068 Dismantling, Recycling and disposal……………................ 104
Indoor unit……..………………………………….................... 068 Error codes, LED flashing and trouble shooting................. 105
Outdoor unit……………………………………….................... 069 Temperature sensor trouble shooting………................... 106
Handing over the system to your client…………..................... 069 PG motor (H6) trouble shooting………………................. 107
Start-up data sheet form…………………………...................... 070 Jumper cap (C5) trouble shooting……………................. 108
Service, repair and maintenance………………….................... 071 Freeze protection (E2) trouble shooting…….................. 109
Directives for service and maintenance…………................. 071 Low pressure (E3) trouble shooting………….................. 110
Regular annual preventive maintenance………………........ 072 PCB board (U8) trouble shooting…………….................. 111
Maintenance of the indoor unit………………………........... 072 Resistance table for temperature sensors……............... 112
Maintenance of the outdoor unit……………………............. 072 Main spare-parts list……………………………................... 115
Refrigerant circuit………………………………………........... 072 Disassembling procedures………………………................. 116
Maintenance check-list………………………………….......... 073 Disassembling the indoor unit……………….................... 116
Safety work area & temporary flammable zones…….......... 074 Disassembling the outdoor unit……………….................. 121
Arrangement of equipment and tools………………….......... 075 Exploded views and part lists………………….................... 126
Refrigerant venting……………………………………............. 076 Exploded view of the indoor unit……………................... 126
Venting > course of activities > part 1…………………......... 077 Part list of the indoor unit…………………...….................. 127
Venting > part 1 > detailed procedure…………………......... 078 Exploded view of the outdoor unit……………................. 128
Venting > course of activities > part 2…………………......... 079 Part list of the outdoor unit…………………….................. 129
Venting > part 2 > detailed procedure…………………......... 080 Recommended equipment and tools for the use with HC
refrigerants…………………………….................................. 130
Equipment for the use of OFDN (N
2
) in the field……........... 081
Flushing the system with OFDN (N
2
)………………….......... 083
Flushing the system and provision of “holding charge” with
OFDN > detailed procedure…………….............................. 084
Provision of a hermetically sealed refrigerant circuit............ 085
Leak, strength and tightness testing……………………........ 085
Leak check (bubble test)………………………………........... 087
Electronic gas detectors………………………………............ 088
Leak testing with OFDN & weak soapy water solution......... 089
Leak testing with OFDN and “bubbles” > detailed proce-
dure……………………………………………….................... 090
Trace gas (N
2
/H
2
) leak detection method……………........... 091
Trace gas leak detection > detailed procedure………......... 093
Pressure test (strength test) with OFDN………………......... 094
Pressure test (strength test) > detailed procedure……....... 095
Refrigerant circuit > Evacuation and charging……............ 096
Evacuation > detailed procedure………………………......... 099
Charging with refrigerant………………………………........... 100
Charging with refrigerant > detailed description……............ 101
Start-up data sheet form for service and repair………......... 102