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13.5.23 F98 (Input Over Current Detection)
Malfunction Decision Conditions
During operation of cooling, 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
Is Input current > specification?
Turn off power supply. Check the main
circuit electrolytic capacitor
Normal?
Check refrigerant amount
Excess refrigerant?
NO
YES
YES
NO
NO
YES
NO
For safety reason and to prevent component
breakdown, always switch off the power
Caution
before remove and connect the component.
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65
Replace the outdoor unit PCB
Repair the pipe flare or union nuts
Reclaim and recharge refrigerant
Reclaim and recharge with correct
amount of refrigerant
Replace outdoor unit PCB
Replace outdoor unit compressor
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