Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 239

Error code
Indoor control PCB
Remote control: E51
Outdoor control PCB
Outdoor inverter
Note (1) 8-time flash FDC250 model only.
1. Applicable model
Models FDC200, 250VSA
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
• Inverter PCB anomaly
• Power transistor anomaly
Note:
LED Green
Keeps flashing
Keeps flashing
Yellow LED
PCB
2-time flash or 8-time flash
5. Troubleshooting
Replace inverter PCB.
Did it return?
Red
Content
Stays OFF
Inverter or power transistor anomaly
1-time flash
(Models FDC200, 250VSA only)
(1)
Diagnosis
238
- -
'19 • PAC-T-327
Countermeasure
OK
YES
Replace power transistor.
NO
(FDC250 model)