CS-HE7QKD, CS-HE9QKD, CS-HE12QKD, CS-HE18QKD, CU-HE7QKD, CU-HE9QKD, CU-HE12QKD, CU-HE18QKD - Panasonic Air Conditioner Service Manual (repair manual). Page 106

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106 
15.4.26 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 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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