Panasonic CS-E18QB4RW Service Manual page 59

Diagnosis Abnormality /
display Protection control
Outdoor cooling high
F95
pressure protection
Power transistor
F96 module overheating
protection
Compressor
F97 overheating
protection
Total running current
F98
protection
Outdoor direct
F99 current (DC) peak
detection
Abnormality Protection
Judgment Operation
4 times happen
within 20 minutes
4 times happen
within 30 minutes
3 times happen
within 30 minutes
3 times happen
within 20 minutes
Continuous
happen for 7 times
Problem
Cooling high pressure
—
protection
Power transistor module
—
overheat
— Compressor overheat
— Total current protection
Power transistor module
—
current protection
59
Check location
 Check refrigeration system
 Outdoor air circuit
 PCB faulty
 Outdoor air circuit (fan motor)
 Insufficient refrigerant
 Check refrigeration system
 Power source or compressor
lock
 Power transistor module faulty
or compressor lock