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15.4.26 F98 (Input Over Current Detection)
Malfunction Decision Conditions
During cooling operation, when an input over-current is detected by checking the input current value being detected
by current transformer (CT) with the compressor running.
Malfunction Caused
Over-current due to compressor failure.
Over-current due to defective outdoor unit PCB.
Over-current due to defective inverter main circuit electrolytic capacitor.
Over-current due to excessive refrigerant.
Troubleshooting
Model S9** S12** S18** S24** S28**
Over-current
value (A)
15.0 15.0 15.0 19.0 19.0
For safety reason and to prevent component
breakdown, always switch off the power
before remove and connect the component.
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
When F98 indication happens
Get restarted and measure the input
current.
Turn off power supply. Check the main
circuit electrolytic capacitor.
Input current > specification?
Normal?
Check refrigerant amount.
Excess refrigerant?
YES
YES
YES
NO
NO
NO
NO
Caution
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