Gree GMV-1015WM/G-U, Руководство по обслуживанию

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Gree GMV6 DC Inverter VRF Units Service Manual
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2 Troubleshooting
When troubleshooting the modular units, make sure that all outdoor units are powered off and
powered on at the same time. Avoid doing so to only some of the outdoor units.
2.1 "A0" Unit's to-be-commissioned State
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
This is a status code. It is displayed before the completion of system engineering commissioning. At
this time, the unit cannot be started.
Possible causes: --
Troubleshooting: not required.
2.2 "A2" Refrigerant Recycle Running State
Fault display:
main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
This is a status code. It indicates that the system has entered refrigerant recycle running state and
will automatically start.
Possible causes: --
Troubleshooting: not required.
2.3 "A3" Defrosting State
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
This is a status code. It indicates that the system has entered defrosting state. In this case, the indoor
fan will stop working for 5 to 10 minutes.
Possible causes:
--
Troubleshooting: not required.
2.4 "A4" Oil Return State
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
This is a status code. It indicates that the system has entered oil return state. In case of oil return in
heating mode, the indoor fan will stop working for 5 to 10 minutes.