55
Note:
“O” - Frequency measured and fan speed fixed.
F91 Refrigeration cycle abnormality 2 times occurrence
within 20 minutes
— • No refrigerant
(3-way valve is closed)
F93 Outdoor compressor abnormal revolution 4 times occurance
within 20 minutes
— • Compressor
F95 Cool high pressure protection 4 times occurance
within 20 minutes
— • Outdoor refrigerant circuit
F96 IPM (power transistor) overheating
protection
— — • Excess refrigerant
• Improper heat radiation
• Outdoor PCB
F97 Outdoor compressor overheating
protection
4 times occurance
within 10 minutes
— • Insufficient refrigerant
• Compressor
F98 Total running current protection 3 times occurance
within 20 minutes
— • Excess refrigerant
• Improper heat radiation
F99 Outdoor Direct Current (DC) peak
detection
7 times occurance
continuously
—•Outdoor PCB
• Compressor
Abnormality / Protection control
Abnormality
Judgement
Emergency
operation
Primary location to verify
Note
Diagnosis
display
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