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