Panasonic WH-UD28AE Service Manual page 65

16.5.23. Input Over Current Detection (F98)
Malfunction Decision Conditions:
During operation of heating, outdoor current above 19.0A is detected by the outdoor current transformer (CT).
Malfunction Caused:
1. Over-current due to compressor failure.
2. Over-current due to defective outdoor unit PCB.
3. Over-current due to defective inverter main circuit electrolytic capacitor.
4. Over-current due to excessive refrigerant.
Abnormality Judgment:
Continue 3 times in 20 minutes.
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