Mitsubishi Heavy Industries SRK100VNXWZRF Service Manual page 132

Error code Error code
Remote control: Remote controller: E51
E51
1. Applicable model
Model FDC100VNP-W
2. Error detection method
Power transistor primary current
3. Condition of Error displayed
If the power transistor primary
current exceeds the setting value
for 3 seconds, the compressor
stops.
4. Presumable cause
• Faulty outdoor unit PCB
• Dust on outdoor unit PCB
Note:
LED RUN light TIMER light Content Green Red
Indoor
4-time
display
Keeps flashing Stays Off ON
Indoor
flash
5. Troubleshooting
Diagnosis
Check soldered
surfaces on the outdoor unit PCB for
foreign matter like dust,
fouling,etc.
131
-
Power transistor anomaly
Content
Power transistor error
(Model FDC100VNP-W only)
NO
YES
-
'22 • PAC-SM-422
Countermeasure
Remove foreign matter
like dust, fouling, etc.
Defective outdoor unit
PCB©Replace.