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Check code Status of air conditioner Operation cause
[1F] Operation stops 1. Outdoor unit power source error.
Compressor break down 2. Inverter compressor circuit system error.
Refer to outdoor unit 3. IPDU PC board error.
Troubleshooting
Diagnostic procedure for check code
Remove cause of overload.
Is the power source voltage of the
outdoor unit normal?
Does the voltage reduction occur
when the fixed-speed compressor
has been activated?
Is the wiring connection on the
IPDU PC board correct?
Is there an abnormal overload?
Check IPDU PC board.
Confirm the power source supply.
Modify wiring connector.
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