101
17.5.27 F98 (Input Over Current Detection)
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
When F98 indication happens
Get restarted and measure the input
current.
NO
Replace the outdoor unit PCB.
Turn off power supply. Check the main
circuit electrolytic capacitor.
Input current > limit?
Normal?
Check refrigerant amount.
Excess refrigerant?
Reclaim and recharge with correct
amount of refrigerant.
YES
YES
YES
NO
NO
NO
Repair the pipe flare or union nuts.
Reclaim and recharge refrigerant.
Replace outdoor unit PCB
Replace outdoor unit compressor
For safety reason and to prevent component
breakdown, always switch off the power
before remove and connect the component.
Caution
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