Mitsubishi Heavy Industries FDTC40ZHXV Technical Manual page 338

Error code Error code
Remote Controller: E51
1. Applicable Model
FDC200, 250VS inverter PAC
models
2. Error detection method
When power transistor anomaly is
detected
for 15 minutes continuously
3. Condition of Error displayed
Same as above
4. Presumable cause
・Outdoor fan motor anomaly
・Inverter PCB anomaly
・Outdoor control PCB anomaly
Note :
LED
Indoor control PCB
Outdoor control PCB
Outdoor inverter PCB 6 times flash or
5. Troubleshooting
detected between ② and ③
of CNI3 on the inverter PCB?
hanesses at the control PCB
detected at the fan motor
Green Red
Stays
Keeps flashing
OFF
1 time
Keeps flashing
flash
Red LED
Green
Keeps
2 times flash
flashing
Diagnosis
Is 15VDC
NO
Is 15VDC
detected between the
side after disconnecting
connector CNI1?
NO
Is 15VDC
connector?
– 315-1 –
Content
Inverter anomaly (2/2)
(Model FDC200, 250 only)
Countermeasure
YES
Replace INV PCB
If not solved, replace
Noise filter PCB as well
YES
Broken harness wire
YES
Replace outdoor fan motor
NO
Replace control PCB
If not solved, replace
INV PCB as well
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