Gree GMV6 DC Inverter VRF Units Service Manual
148
2.104 "HC" Current Detection Circuit Fault of Fan Drive
Fault display:
main board of outdoor unit displays
Fault diagnosis:
If the fault code displayed on the 2-digit digital LED of the outdoor unit's main control board is HC, it
indicates the current detection circuit fault of fan drive.
Possible causes:
■ The fan drive board operates improperly.
Troubleshooting:
"HC" Current Detection
Circuit Fault of Fan Drive
The fan drive board is
abnormal
Yes
Replace the fan drive board
No
If the problem resolved after
the unit is powered off and then powered
on for more than three times?
2.105 "HH" Over Voltage Protection for DC Bus of Fan Drive
Fault display:
main board of outdoor unit displays
Fault diagnosis:
If the fault code displayed on the 2-digit digital LED of the outdoor unit's main control board is HH, it
indicates the over voltage protection for the DC bus of fan drive.
Possible causes:
■
Power voltage is higher than 430V or 780V(for 460V-voltage);;
■
Fan drive board is abnormal.
Troubleshooting:
Summary of Contents for GMV-1015WM/G-U
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