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Mitsubishi Electric PFAV-P250VM-E Service Manual page 154

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Table of Contents
[ X Troubleshooting ]
1. Error code
4250
Instantaneous overcurrent (Detail code 106)
Overcurrent (Detail code 107)
2. Error definition and error detection method
P250 model
A current that equals or exceeds 94 Apeak or 22 Arms was detected by the current sensor.
P350 and P400 models
A current that equals or exceeds 94 Apeak or 35 Arms was detected by the current sensor.
3. Cause, check method and remedy
Cause
(1)
Inverter output related problems
Refer to section -6- "Inverter" under part [4] Troubleshooting Principal Parts for error codes related to the inverter.(page 202)
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 202)
HWE10190
Refer to X [4] -6- (2) [1] - [4].(page 204)
If no problems are found, check the resistance value of the IGBT
module on the INV board.
(Refer to the section on troubleshooting IGBT module.)
Cause
Cause
Check method and remedy
Check method and remedy
Refer to X [4] -6- (2) [2].(page 204)
Refer to X [4] -6- (2) [1] - [4].(page 204)
Check method and remedy
Refer to X [4] -6- (2) [5].(page 205)
Refer to X [4] -6- (2) [6].(page 205)
- 145 -
GB
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