Gree TERRA09HP230V1A Installation, Service & Troubleshooting page 91

H7 Error Code, continued on next page
H7
Desynchronizing of compressor
Status:
During cooling mode, compressor will stop,
indoor fan will run. Heating mode all units
stop.
Yes
Error Code Diagnostics
Troubleshooting Procedure for Synchronizing Fault after Unit is Started
Start Troubleshooting after unit
is powered off for 3 minutes
Are the compressor terminal
connected properly?
Yes
Replace Control Board AP1
Remove Malfunction?
No
Replace Compressor
End Troubleshooting
1. Check the resistance of the compressor
terminals and connections to the compressor
2. Check for overcharge of refrigerant
3. Check for correct voltage
No
Correct wiring
problem
Compressor Terminals
91