Logic Error - Mitsubishi Electric PURY-P72 Service Handbook

[ IX Troubleshooting ]
1. Error Code
4220
(TJMU-A)
4225
Logic error (Detail code 111)
2. Error definition and error detection method
H/W error
If only the H/W error logic circuit operates, and no identifiable error is detected.
3. Cause, Check method and remedy
In the case of 4220
(1) External noise
(2) INV board failure
(3) IPM failure (P96, P120, P144 models only)
(4) DCCT failure (P96, P120, P144 models only)
In the case of 4225
(1) External noise
(2) Fan board failure
Refer to section -7- "Inverter (TJMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 310)
HWE09130
Cause
Cause
- 222 -
Check method and remedy
Refer to IX [4] -7- (2) [1].(page 312)
Replace the IPM.
Replace the DCCT.
Check method and remedy
Refer to IX [4] -7- (2) [6].(page 314)
GB