Mitsubishi Heavy Industries MHI FDU71VNXVF1 Technical Manual page 172

Error code
Remote control:
E47
Outdoor control PCB
Outdoor Inverter
1. Applicable model
Model FDC71 only
2. Error detection method
In order to prevent from
overcurrent of A/F, if the current
exceeds the specifications, it
makes the compressor stopping.
3. Condition of error displayed
• If the output current of A/F
exceeds the specifications,
it makes the compressor
stopping.
4. Presumable cause
• Defective inverter PCB
Note:
LED Green
Indoor Keeps flashing
Keeps flashing
Yellow LED
PCB
7 times flashing
5. Troubleshooting
Power supply
voltage OK?
checked results of
insulation resistance and
coil resistance (1) of
compressor motor
Red
Content
Stays off
Inverter PCB A/F module anomaly
1 time flash
Diagnosis
Is the
YES
Is the
OK?
(1) 1.154Ω or more at 20°C
YES
171
- -
'12 • PAC-T-178
(Model FDC71VNX)
Countermeasure
Check power supply.
NO
Replace compressor.
NO
Defective outdoor Inverter
PCB ➞ Replace.