Panasonic CS-PS9JKT Service Manual page 65

14.4.22 F98 (Input Over Current Detection)
Malfunction Decision Conditions
During cooling and heating operation, when an input over-current (16.8A) 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
When F98 indication happens
Get restarted and measure the input
current.
Is Input current > 16.8A?
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
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
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