Mitsubishi Electric PUHY-P200 Service Handbook page 233

[ IX Troubleshooting ]
4240
1. Error Code
4240
Overload protection
2. Error definition and error detection method
If the output current of "(Iac) >Imax (Arms)" or "THHS > 100°C [212°F] " is continuously detected for 10 minutes or more
during inverter operation.
Model
P200, P250, EP200
P300 - P450, EP250, EP300
3. Cause, check method and remedy
(1) Air passage blockage
(2) Power supply environment
(3) Inverter failure
(4) Compressor failure
Refer to section -6- "Inverter" under part [4] Troubleshooting Principal Parts for error codes related to the inverter.(page 285)
HWE10040
Imax(Arms)
19
27
Cause Check method and remedy
Check that the heat sink cooling air passage is not blocked
Power supply voltage is 342 V or above.
Refer to IX [4] -6-.(page 285)
Check that the compressor has not overheated during operation.
-> Check the refrigerant circuit (oil return section).
Refer to IX [4] -6- (2) [2].(page 287)
- 224 - GB