94
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
F95
Cooling high pressure overload
protection
—
• Outdoor high pressure sensor
• Water pump or water leakage
• Clogged expansion valve or strainer
• Excess refrigerant
• Outdoor PCB
Abnormality / Protection control Abnormality Judgement Primary location to verifyDiagnosis display
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