Mitsubishi Electric PURY-EP200 Service Handbook page 217

[ IX Troubleshooting ]
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 -7- "Inverter" under part [4] Troubleshooting Principal Parts for error codes related to the inverter.(page 283)
HWE0713A
Check method and remedy
Refer to IX [4] -7- (2) [1]-[4].(page 285)
Check the IGBT module resistance value of the INV board, if no
problems are found.
(Refer to the Trouble shooting for IGBT module)
Check method and remedy
Refer to IX [4] -7- (2) [5].(page 286)
Refer to IX [4] -7- (2) [6].(page 287)
- 208 - GB