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F93 Compressor abnormal
revolution
4 times happen
within 20 minutes
— Compressor abnormal
revolution
• Power transistor module faulty or
compressor lock
F95 Outdoor cooling high
pressure protection
4 times happen
within 20 minutes
— Cooling high pressure
protection
• Check refrigeration system
• Outdoor air circuit
F96 Power transistor module
overheating protection
4 times happen
within 30 minutes
— Power transistor module
overheat
• PCB faulty
• Outdoor air circuit (fan motor)
F97 Compressor
overheating protection
3 times happen
within 30 minutes
— Compressor overheat • Insufficient refrigerant
F98 Total running current
protection
3 times happen
within 20 minutes
— Total current protection • Check refrigeration system
• Power source or compressor lock
F99 Outdoor direct current
(DC) peak detection
Continuous
happen for 7 times
— Power transistor module
current protection
• Power transistor module faulty or
compressor lock
Abnormality /
Protection control
Abnormality
Judgement
Protection
operation
Problem Check location
Diagnosis
display
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