E51
Power transistor anomaly
Error code
Remote controller: E51
LED Green Red
Indoor
Content
Power transistor error
Keeps flashing
Stays Off
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
2. Error detection method
3.
Condition of error displayed
4. Presumable cause
Note:
If the power transistor primary
current exceeds the setting value
for 3 seconds, the compressor
stops.
Power transistor primary current
• Faulty outdoor unit PCB
• Dust on outdoor unit PCB
Check soldered
surfaces on the outdoor unit PCB for
foreign matter like dust,
fouling,etc.
Remove foreign matter
like dust, fouling, etc.
Defective outdoor unit
PCB➞Replace.
YES
NO
Error code
Remote control:
LED Green Red
Content
Indoor
Stays OFF
Keeps flashing
'22 • PAC-SM-412
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91
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