Panasonic WH-UD30BE5-1 Service Manual page 56

16.5.13. Input Over Current Detection (F16)
Malfunction Decision Conditions:
During operation of heating, when outdoor current above 28.0A is detected by the current transformer (CT) in the outdoor unit
PCB.
Malfunction Caused:
1. Excessive refrigerant.
2. Faulty outdoor unit capacitor PCB.
3. Faulty outdoor unit PCB.
Abnormality Judgment:
Continue 3 times in 20 minutes.
56