Gree GMV6 HR DC Inverter VRF Units Service Manual
167
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 op
erates improperly.
Troubleshooting:
"HC" Curren t De tection
Circuit Fault o f Fa n Drive
The fan dr ive boa rd is
abn ormal
Yes
Replace th e fan drive board
No
If th e p roblem resolved after
the unit is powered off and then powered
on for mor e than three time s?
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:
■ The unit's input power cable has a voltage exceeding 460V;
■ The fan drive board operates improperly.
Troubleshooting:
Summary of Contents for GMVVQ1015WM/C-X
Page 418: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 416 GMV VQ400WM C X GMV VQ450WM C X...
Page 420: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 418 NCHS1D...
Page 421: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 419 NCHS2D...
Page 422: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 420 NCHS4D...
Page 423: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 421 NCHS8D...
Page 426: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 424 6 1 2 Heating Operation...
Page 427: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 425 6 1 3 Main body Cooling...
Page 428: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 426 6 1 4 Main body Heating...
Page 430: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 428 6 2 2 Heating Operation...
Page 431: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 429 6 2 3 Main body Cooling...
Page 432: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 430 6 2 4 Main body Heating...
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