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25.2.27 Input Over Current Detection (F98 / H01 / F16)
Malfunction Decision Conditions
During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is
detected by checking the input current value being detected by current transformer (CT) with the compressor
running.
Malfunction Caused
Excessive refrigerant.
Faulty outdoor unit PCB.
Troubleshooting
Turn off power supply. Check the main
circuit electrolytic capacitor.
When F98 indication ha
ens
For safety reason and to prevent component
breakdown, always switch off the power
before remove and connect the component.
Get restarted and measure the input
current.
NO
Input current > limit?
●
Replace the outdoor unit PCB.
NO
YES
Normal?
Check refrigerant amount.
●
Repair the pipe flare or union nuts.
Reclaim and recharge refrigerant.
●
Reclaim and recharge with correct
amount of refrigerant.
Excess refrigerant?
YES
NO
YES
NO
●
Replace outdoor unit PCB
●
Replace outdoor unit compressor
Caution
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