84
14
Check code Operation cause
[1d] 1. Outdoor unit power source error
Compressor error alarm 2. Inverter compressor circuit system error
3. Inverter compressor error
4. Inverter compressor refrigerant stagnation
5. Defective inverter PC board
Troubleshooting
Diagnostic procedure for check code
Is the power source voltage of the
outdoor unit normal?
Does voltage reduction occur
when the fixed-speed compressor
has been activated?
Is the connection of wiring on the
inverter PC board normal?
Is there an abnormal overload?
Is the inverter compressor normal?
Is there refrigerant stagnation
in the compressor case?
Check inverter PC board.
Confirm the power source supply.
Modify connector wiring.
Modify cause of overload.
Compressor error
Modify refrigerant stagnation in
the compressor case, and start
the operation.
Is the inverter winding
output normal?
Check inverter PC board.
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
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