Mitsubishi Electric City Multi PFAV-P500VMH-E, Service Handbook

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[
X
Troubleshooting ]
- 120 -
HWE07150 GB
1. Error Code
Instantaneous overcurrent (Detail code 106)
Overcurrent (Detail code 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
Refer to section - 6 - "Inverter" under part [4] "Trouble shooting principal parts" for error codes related to the
inverter.(page 172)
1. Error Code
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
In the case of 4255
Refer to section - 6 - "Inverter" under part [4] "Trouble shooting principal parts" for error codes related to the
inverter.(page 172)
4250
Cause Check method and remedy
(1) Inverter output related Refer to
X
[4] - 6 - (2) [1] - [4].(page 174)
Check the IGBT module resistance value of the INV board, if no
problems are found.
(Refer to the Trouble shooting for IGBT module)
4250
4255
Cause Check method and remedy
(1) Grounding fault compressor Refer to
X
[4] - 6 - (2) [2].(page 174)
(2) Inverter output related Refer to
X
[4] - 6 - (2) [1]- [4].(page 174)
Cause Check method and remedy
(1) Grounding fault of fan motor Refer to
X
[4] - 6 - (2) [5].(page 175)
(2) Fan board failure Refer to
X
[4] - 6 - (2) [6].(page 175)