Mitsubishi Electric PURY-P72 Service Handbook page 236
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Also See for PURY-P72:
- Service handbook (412 pages) ,
- Service handbook (200 pages) ,
- Service handbook (387 pages)
Table of Contents
[ IX Troubleshooting ]
1. Error Code
4240
(YKMU-A)
Overload protection
2. Error definition and error detection method
If the output current of "(Iac) >Imax (Arms)" or "THHS > 95°C [203°F] " is continuously detected for 10 minutes or more during
inverter operation.
Model
P72 model
P96, P120, P144 models
3. Cause, check method and remedy
Cause
(1)
Air passage blockage
(2)
Power supply environment
(3)
Inverter failure
(4)
Compressor failure
Refer to section -7- "Inverter (YKMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 321)
HWE1116D
Imax(Arms)
15
27
Check that the heat sink cooling air passage is not blocked
Power supply voltage is 414 V or above.
Refer to IX [4] -7-.(page 321)
Check that the compressor has not overheated during operation.
-> Check the refrigerant circuit (oil return section).
Refer to IX [4] -7- (2) [2].(page 323)
- 227 -
Check method and remedy
GB
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