Gree GMV6 DC Inverter VRF Units Service Manual
indicating that the unit's fan has entered emergency operation.
Possible causes: --
Troubleshooting: not required.
2.35 "CA" Emergency Operation of Module
Fault display: main board of outdoor unit displays
Fault diagnosis:
If any module is set to emergency operation mode, the main board displays the code during the
operation, indicating that the unit's module has entered emergency operation.
Possible causes: --
Troubleshooting: not required.
2.36 "CH" Too High Rated Capacity Ratio
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
The unit detects the rated capacity of the online indoor and outdoor units. When the ratio of the total
rated capacity of indoor units to the total rated capacity of outdoor units exceeds 1.35, the unit will stop
operation and display the fault.
Possible causes:
■ The total rated capacity of the indoor units exceeds 1.35 times of the total rated capacity of the
outdoor units.
Troubleshooting:
Re-engineer the unit to decrease indoor unit capacity or increase outdoor unit capacity.
2.37 "CL" Too Low Rated Capacity Ratio
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
The unit detects the rated capacity of the online indoor and outdoor units. When the ratio of the total
rated capacity of indoor units to the total rated capacity of outdoor units is below 0.5, the unit will stop
operation and display the fault.
Possible causes:
■ The total rated capacity of the indoor units is smaller than 0.5 times of the total rated capacity of
the outdoor units.
Troubleshooting:
Re-engineer the unit to increase indoor unit capacity or decrease outdoor unit capacity.
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