Panasonic CS-MRE7MKE Service Manual page 52

Diagnosis Abnormality
display or
LED 6 LED 5 LED 4 LED 3 LED 2 LED 1
protection
control
F96 Power
transistor
module
overheating
protection
F97 Compressor
overheating
protection
F98 Total running
current
protection
F99 Outdoor direct
current (DC)
peak detection
LED 1 illuminate is indicated that outdoor unit is operating normally. If the LED 1 is switched off or flashing, check the power supply
and self-diagnosis indication.
------ Illuminate
------ Flashing
Blank ------ OFF
Abnormality Protection
judgement operation
4 times —
happen within
30 minutes
3 times —
happen within
30 minutes
3 times —
happen within
20 minutes
Continuous —
happen for 7
times
52
Problem Check location
Power transistor • PCB faulty
module overheat • Outdoor air
circuit (fan motor)
Compressor • Insufficient
overheat refrigerant
Total current • Check
protection refrigeration
system
• Power source or
compressor lock
Power transistor • Power transistor
module current module faulty or
protection compressor lock