Panasonic CS-E18NKUA Service Manual page 65

15.4.19 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
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