Panasonic CS-RE18JKX-1 Service Manual page 68

15.5.21. F96 (IPM Overheating)
Malfunction Decision Conditions
During operating of cooling and heating, when IPM temperature data (100°C) is detected by the IPM temperature sensor.
Multi Models Only
• Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated.
• Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90°C) is detected by the heat
sink temperature sensor.
Malfunction Caused
• IPM overheats due to short circuit of hot discharge air flow.
• IPM overheats due to defective of outdoor fan motor.
• IPM overheats due to defective of internal circuitry of IPM.
• IPM overheats due to defective IPM temperature sensor.
Multi Models Only
• Compressor OL connector poor contact.
• Compressor OL faulty.
Troubleshooting
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