WH-SDC09F3E8, WH-SDC12F9E8, WH-SDC14F9E8, WH-SDC16F9E8, WH-UD09FE8, WH-UD12FE8, WH-UD14FE8, WH-UD16FE8 - Panasonic Air Conditioner Service Manual (repair manual). Page 117

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117 
Diagnosis display 
Abnormality/Protection control 
Abnormality judgement 
Primary location to verify 
F36 
Outdoor air temperature sensor 
abnormality 
Continue for 5 sec. 
  Outdoor air temperature sensor 
(defective or disconnected) 
F37 
Indoor water inlet temperature sensor 
abnormality 
Continue for 5 sec. 
  Water inlet temperature sensor 
(defective or disconnected) 
F40 
Outdoor discharge pipe temperature 
sensor abnormality 
Continue for 5 sec. 
  Outdoor discharge pipe temperature 
sensor (defective or disconnected) 
F41 
PFC control 
4 times occurrence within 10 
minutes 
  Voltage at PFC 
F42 
Outdoor heat exchanger temperature 
sensor abnormality 
Continue for 5 sec. 
  Outdoor heat exchanger temperature 
sensor (defective or disconnected) 
F43 
Outdoor defrost sensor abnormality 
Continue for 5 sec. 
  Outdoor defrost sensor (defective or 
disconnected) 
F45 
Indoor water outlet temperature sensor 
abnormality 
Continue for 5 sec. 
  Water outlet temperature sensor 
(defective or disconnected) 
F46 
Outdoor Current Transformer open 
circuit 
— 
  Insufficient refrigerant 
  Outdoor PCB 
  Compressor low 
F48 
Outdoor EVA outlet temperature sensor 
abnormality 
Continue for 5 sec. 
  Outdoor EVA outlet temperature sensor 
(defective or disconnected) 
F49 
Outdoor bypass outlet temperature 
sensor abnormality 
Continue for 5 sec. 
  Outdoor bypass outlet temperature 
sensor (defective or disconnected) 
F95 
Cooling high pressure overload 
protection 
— 
  Outdoor high pressure sensor 
  Water pump or water leakage 
  Clogged expansion valve or strainer 
  Excess refrigerant 
  Outdoor PCB 
 

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