Panasonic CS-Z20VKEW

137
18.4.25 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
o Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated.
o 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
o Compressor OL connector poor contact.
o Compressor OL faulty.
Troubleshooting