Panasonic WH-MHF09G3E5 Service Manual page 106

16.5.22 Input Over Current Detection (F16)
Malfunction Decision Conditions:
During operation of heating, when outdoor current above 27.9A is detected by the current transformer (CT) in the
outdoor unit PCB.
Malfunction Caused:
1 Excessive refrigerant.
2 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue 3 times in 20 minutes.
Troubleshooting:
Get restarted and measure
the AC current from the
outdoor LIVE terminal.
Is the measured AC current
over 27.9 A?
Yes
Check refrigerant amount.
Excess refrigerant?
No
For safety reason and to prevent component breakdown,
always switch off the power before remove and connect the component.
No
Replace the outdoor unit
PCB (main).
Yes
Reclaim and recharge with
correct amount of refrigerant.
Replace the outdoor unit
PCB (main).
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