Mitsubishi Electric PUHY-HP200 Service Handbook page 147

[ IX Troubleshooting ]
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
HP200,HP250
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 195)
1. Error Code
4250
4255
IPM error (Detail code 101)
2. Error definition and error detection method
In the case of 4250
Overcurrent is detected by the overcurrent detection resistor (RSH) on the INV board.
In the case of 4255
IPM error signal is detected.
3. Cause, check method and remedy
In the case of 4250
Cause
(1) Inverter output related
In the case of 4255
Cause
(1) Fan motor abnormality
(2) Fan board failure
Refer to section -6- "Inverter" under part [4] Troubleshooting Principal Parts for error codes related to the inverter.(page 195)
HWE08110
Imax(Arms)
27
Cause
Refer to IX [4]-6-(2)[1]-[4].(page 197)
Check the IGBT module resistance value of the INV board, if no
problems are found.
(Refer to the Trouble shooting for IGBT module)
Refer to IX [4]-6-(2)[5].(page 198)
Refer to IX [4]-6-(2)[6].(page 198)
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 195)
Check that the compressor has not overheated during operation.
-> Check the refrigerant circuit (oil return section).
Refer to IX [4]-6-(2)[2].(page 197)
Check method and remedy
Check method and remedy
- 138 - GB