Panasonic WH-MXC09J3E8 Service Manual page 180

17.5.30 Input Over Current Detection (F16)
Malfunction Decision Conditions:
During operation of cooling and heating, when outdoor current exceeding the following table is detected by the
current transformer (CT) in the outdoor unit PCB.
Current
Malfunction Caused:
1 Excessive refrigerant.
2 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue 3 times in 20 minutes.
Troubleshooting:
WH-MXC09J3E8
12.8A
Caution
Get restarted and measure
the AC current from the
outdoor LIVE terminal.
Is the measured AC
current over
exceeding the
following table?
Yes
Check refrigerant amount.
Excess refrigerant?
No
WH-MXC12J9E8
12.8A
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).
180
WH-MXC16J9E8
17.4A