Gree GMV6 DC Inverter VRF Units Service Manual
No
Yes
"C3" Communication Fault
Between the Primary Controller
and Inverter Fan Driver
Whether the communication
cables between the main board of outdoor
unit and inverter fan drive board
are connected properly?
Connect the communication
cables properly
No
Replace the fan drive board
The main cont rol board may be
abnormal
Yes
Replace the main control board
Whether the outdoor unit's
fan drive board is normal?
Yes
2.30 "C4" Indoor Unit Loss Fault
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
When the unit identifies that more than three indoor units are disconnected, it will stop for protection.
Possible causes:
■ Poor contact of communication cables;
■ The indoor units are powered off;
■ The main board of indoor unit operates improperly.
Troubleshooting:
To Next Page
Loading...