Mitsubishi Electric PUHY-RP200 Service Handbook page 183

[ IX Troubleshooting ]
1. Error Code
4250
ACCT overcurrent relay trip (Detail code 102)
DCCT overcurrent relay trip (Detail code 103)
Overcurrent relay trip (Detail code 106 and 107)
2. Error definition and error detection method
RP200 model
Overcurrent 38 Apeak or 23 Arms and above is detected by the current sensor.
RP250 - RP350 models
Overcurrent 56 Apeak or 33 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 234)
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 234)
HWE10130
Refer to IX [4] -6- (2) [1] - [4].(page 236)
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 236)
Refer to IX [4] -6- (2) [1] - [4].(page 236)
Check method and remedy
Refer to IX [4] -6- (2) [5].(page 237)
Refer to IX [4] -6- (2) [6].(page 238)
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