Panasonic WH-UD30BE5-1 Service Manual page 59

16.5.16. Output Over Current Detection (F23)
Malfunction Decision Conditions:
During operation of heating, when DC current above 30.0 ± 5.0A is detected by the IPM DC Peak sensing circuitry in the
outdoor unit PCB.
Malfunction Caused:
1. Faulty outdoor unit PCB.
2. Faulty compressor.
Abnormality Judgment:
Continue for 7 times.
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