Panasonic WH-MDC05F3E5 Service Manual page 88

Diagnosis display Abnormality/Protection control
Outdoor air temperature sensor
F36
abnormality
Indoor water inlet temperature sensor
F37
abnormality
Outdoor discharge pipe temperature
F40
sensor abnormality
F41 PFC control
Outdoor heat exchanger temperature
F42
sensor abnormality
F43 Outdoor defrost sensor abnormality
Indoor water outlet temperature sensor
F45
abnormality
Outdoor Current Transformer open
F46
circuit
Outdoor EVA outlet temperature sensor
F48
abnormality
Outdoor bypass outlet temperature
F49
sensor abnormality
Cooling high pressure overload
F95
protection
Abnormality judgement
Continue for 5 sec.
Continue for 5 sec.
Continue for 5 sec.
4 times occurrence within 10
minutes
Continue for 5 sec.
Continue for 5 sec.
Continue for 5 sec.
—
Continue for 5 sec.
Continue for 5 sec.
—
88
Primary location to verify
 Outdoor air temperature sensor
(defective or disconnected)
 Water inlet temperature sensor
(defective or disconnected)
 Outdoor discharge pipe temperature
sensor (defective or disconnected)
 Voltage at PFC
 Outdoor heat exchanger temperature
sensor (defective or disconnected)
 Outdoor defrost sensor (defective or
disconnected)
 Water outlet temperature sensor
(defective or disconnected)
 Insufficient refrigerant
 Outdoor PCB
 Compressor low
 Outdoor EVA outlet temperature sensor
(defective or disconnected)
 Outdoor bypass outlet temperature
sensor (defective or disconnected)
 Outdoor high pressure sensor
 Water pump or water leakage
 Clogged expansion valve or strainer
 Excess refrigerant
 Outdoor PCB