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Mitsubishi Electric PUHY-HP200 Service Handbook page 148

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[ IX Troubleshooting ]
1. Error Code
4250
Instantaneous overcurrent (Detail code 106)
Overcurrent (Detail code 107)
2. Error definition and error detection method
HP200 and HP250 models
Overcurrent 94 Apeak or 22 Arms and above is detected by the current sensor.
HP300 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] Troubleshooting Principal Parts for error codes related to the inverter.(page 195)
1. Error Code
4250
4255
Short-circuited IPM/Ground 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] Troubleshooting Principal Parts for error codes related to the inverter.(page 195)
HWE08110
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)
Cause
Cause
Check method and remedy
Check method and remedy
Refer to IX [4]-6-(2)[2].(page 197)
Refer to IX [4]-6-(2)[1]-[4].(page 197)
Check method and remedy
Refer to IX [4]-6-(2)[5].(page 198)
Refer to IX [4]-6-(2)[6].(page 198)
- 139 -
GB

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