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Mitsubishi Electric PUHY-(E)P200 Service Handbook page 185

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[ IX Troubleshooting ]
1. Error Code
4250
4255
Overcurrent breaker trip (Detail code 106,107)
2. Error definition and error detection method
P200 and P250 models
Overcurrent 94 Apeak or 22 Arms and above is detected by the current sensor.
P300 models and above
Overcurrent 94 Apeak or 35 Arms and above is detected by the current sensor.
3. Cause, check method and remedy
Cause
(1)
Inverter output related
Refer to section - 6 - "Inverter" under part [4] "Trouble shooting principal parts" for error codes related to the
inverter.(page 232)
1. Error Code
4250
4255
IPM short/ grounding fault (Detail code 104)
2. Error definition and error detection method
When IPM/IGBT short damage or grounding on the load side is detected just before starting the inverter.
3. Cause, check method and remedy
In the case of 4250
(1)
Grounding fault compressor
(2)
Inverter output related
In the case of 4255
(1)
Grounding fault of fan motor
(2)
Fan board failure
Refer to section - 6 - "Inverter" under part [4] "Trouble shooting principal parts" for error codes related to the
inverter.(page 232)
HWE07010
Refer to 9 [4] - 6 - (2) [1] - [4].(page 234)
Check the IGBT module resistance value of the inverter board, if
no problems are found.
(Refer to the Trouble shooting for IGBT module)
Cause
Cause
Check method and remedy
Check method and remedy
Refer to 9 [4] - 6 - (2) [2].(page 234)
Refer to 9 [4] - 6 - (2) [1]- [4].(page 234)
Check method and remedy
Refer to 9 [4] - 6 - (2) [5].(page 235)
Refer to 9 [4] - 6 - (2) [6].(page 235)
- 176 -
GB
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