Mitsubishi Heavy Industries FDT90VNPWVH Service Manual page 100

Error code
Remote control:
E40
1. Applicable model
All models
2. Error detection method
If the inverter output current
value exceeds the setting value
within 80 seconds after the
compressor ON in the heating
mode, the compressor stops.
3. Condition of Error displayed
• If the output current of inveter
exceeds the specifications,
it makes the compressor
stopping. (In heating mode)
• After 3-minute delay, the
compressor restarts, but if this
anomaly occurs 2 times within
20 minutes after the intial
detection.
4. Presumable cause
• Service valve (gas side)
closing
• Defective outdoor unit PCB
Note:
LED Green Red
Service valve (gas side) closing operation
Indoor Keeps flashing Stays OFF
5. Troubleshooting
Diagnosis
Are the
service valve (gas side)
opened?
YES
Is the
checked result of power
transistor module
OK?
YES
• Is the space for installation of indoor and/or outdoor unit enough?
• Is there any short-circuit of air on indoor and/or outdoor unit?
• At heating, does the indoor fan motor run?
Is the filter clogged?
• Is there any liquid flooding?
• Is there any anoumalous sound on the compressor?
YES
After
resetting power for
several times does it
become normal?
YES
Temporary noise may cause of anomaly.
If noise source can be found, take countermeasure.
99
-
Content
NO
NO
NO
-
'19 • PAC-SM-334
Countermeasure
Open the service valve.
Defective outdoor unit
PCB➞Replace.
Defective outdoor unit
PCB➞Replace.