Gree GMV-VQ680WM/C-X Service Manual page 195

Gree
2.136 "n4" Settings Status of Maximum Output Capacity
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 of a function. It indicates that the unit has entered settings status of maximum
output capacity. "10" indicates the maximum output capacity of 100%; "09" indicates the maximum
output capacity of 90%; and "08" indicates the maximum output capacity of 80%.
Possible causes: --
Troubleshooting: not required.
2.137 "n6" Unit Fault Query Status
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
The code is a query status code. It indicates that the unit has entered unit fault query state. In this
case, you can query five historical faults of indoor and outdoor units. Keep in mind that you have to query
the faults respectively for indoor units and outdoor units.
Possible causes: --
Troubleshooting: not required.
2.138 "n7" Unit Parameter Query Status
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
The code is a query status code. It indicates that the unit has entered unit parameter query state.
Possible causes: --
Troubleshooting: not required.
2.139 "n8" Indoor Unit Engineering SN Query
Fault display: wired controller of indoor unit displays
Fault diagnosis:
The code is a query status code. It indicates that the unit has entered "indoor unit engineering SN
query" state. In this case the wired controller displays engineering SN of the indoor unit, the buzzer of
which sounds at the same time.
Possible causes: --
Troubleshooting: not required.
GMV6 HR DC Inverter VRF Units Service Manual
193