174
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.
WH-MXC09J3E8
WH-MXC12J9E8
WH-MXC16J9E8
Current
12.8A
12.8A
17.4A
Malfunction Caused:
1 Excessive refrigerant.
2 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue 3 times in 20 minutes.
Get restarted and measure
the AC current from the
outdoor LIVE terminal.
Is the measured AC
current over
exceeding the
following table?
No
Replace the outdoor unit
PCB (main).
Reclaim and recharge with
correct amount of refrigerant.
Replace the outdoor unit
PCB (main).
Check refrigerant amount.
Excess refrigerant?
Yes
Yes
No
Troubleshooting:
For safety reason and to prevent component breakdown,
always switch off the power before remove and connect the component.
Caution