Ipm Error - Mitsubishi Electric PURY-P72 Service Handbook

[ IX Troubleshooting ]
1. Error Code
4250
(TJMU-A)
4255
IPM error (Detail code 101)
2. Error definition and error detection method
In the case of 4250
P72 model
Overcurrent is detected by the overcurrent detection resistor (RSH) on the INVboard.
P96, P120, P144 models
IPM error signal is detected.
In the case of 4255
IPM error signal is detected.
3. Cause, check method and remedy
In the case of 4250
P72 model
Cause
(1) Inverter output related
P96, P120, P144 models
Cause
(1) Inverter output related
(2) Same as 4230 error
In the case of 4255
Cause
(1) Fan motor abnormality
(2) Fan board failure
(3) Electromagnetic contactor (52F)
actuation failure (P120, P144 on-
ly)
Refer to section -7- "Inverter (TJMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 310)
HWE09130
Check method and remedy
Refer to IX [4] -7- (2) [1] - [4].(page 312)
Check method and remedy
Refer to IX [4] -7- (2) [1] - [4].(page 312)
Same as 4230 error
Check method and remedy
Refer to IX [4] -7- (2) [5].(page 314)
Refer to IX [4] -7- (2) [6].(page 314)
Check the wiring between the FAN board, 52F, and fan motor.
(page 295)
- 228 - GB