Mitsubishi Heavy Industries SCM71ZS-W User Manual

-
144
-
'19 • SCM-SM-276
Error code
Remote control:
LED Green Red
Indoor
Outdoor
Content
E40
Service valve (gas side) closing operation
Keeps ashing
Stays OFF
– 4
-
time ash
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
After
resetting power for
several times does it
become normal?
NO
YES
Temporary noise may cause of anomaly.
If noise source can be found, take countermeasure.
Is the
checked result of power
transistor module
OK?
NO
NO
• 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
YES
YES
Are the
service valve (gas side)
opened?
Open the service valve.
Defective outdoor unit
main PCB
➞
Replace.
Defective outdoor unit
main PCB
➞
Replace.
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 specications,
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 main
PCB
Note:

Mitsubishi Heavy Industries SCM71ZS-W Specifications

General

Brand	Mitsubishi Heavy Industries
Model	SCM71ZS-W
Category	Air Conditioner
Language	English