42
Diagnosis
display
Abnormality / Protection control
Abnormality
Judgment
Emergency
Operation
Primary location to verify
F96
IPM (power transistor) overheating
protection
─
─
Excess refrigerant
Improper heat radiation
IPM (Power transistor)
F97
Outdoor compressor overheating
protection
4 times occurrence
within 20 minutes
─
Insufficient refrigerant
Compressor
F98
Total running current protection
3 times occurrence
within 20 minutes
─
Excess refrigerant
Improper heat radiation
F99
Outdoor Direct Current (DC) peak
detection
7 times occurrence
continuously
─
Outdoor PCB
IPM (Power transistor)
Compressor
Note:
“○” – Frequency measured and fan speed fixed.
“ * ” – For cooling only model, it is the indication when indoor heat exchanger sensor or indoor air intake sensor has
abnormality.
The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until “beep”
sound heard following by pressing the “CHECK” button at Remote Control.
Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors
(refer to Error Codes Table) by using Remote Control or Auto Switch at indoor unit. However, the Remote Control
signal receiving sound is changed from one “beep” to four “beep” sounds.
