Mitsubishi Heavy Industries FDT71VNXVD Service Manual page 71

Error code
Remote controller: E34
1. Applicable model
3-phase model only
2. Error detection method
When 0V is detected on any
of L1, L2, L3 for 5 seconds
continuously after turning
power on.
3. Condition of Error displayed
Same as above
4. Presumable cause
• Anomalous power supply
• Blown power supply fuse
• Defective noise filter
• Defective wire connection on
noise filter control PCB
• Defective outdoor control
PCB
Note:
LED Green Red
Content
Indoor Keeps flashing Stays OFF
Outdoor Keeps flashing 1 time flash
5. Troubleshooting
Diagnosis
Measure
the power supply voltage.
Is AC380/415V between respective
phases?
YES
Is AC380/415V
detected between respective phases
at the secondary side of noise
filter?
YES
Is wiring
between the noise filter
and the outdoor control PCB
connected properly?
71
-
81
Open L3 phase on power supply
(3-phase model only)
NO
NO
NO
YES
-
'10 • PAC-SM-137A
Countermeasure
Check power supply.
Replace noise filter.
Connect properly.
Defective outdoor control
PCB Replace.