Error Codes [4250, 4255, 4256] Detail Code 104 - Mitsubishi Electric PURY-P200YLM-A(1) Service Handbook

[7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ]
7-6-19

Error Codes [4250, 4255, 4256] Detail Code 104

1. Error code definition
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
Cause
(1) Grounding fault compressor
(2) Inverter output related
In the case of 4255 and 4256
Cause
(1) Grounding fault of fan motor
(2) Fan board failure
For inverter-related error codes, refer to the following page(s). [8-10 Troubleshooting Inverter Problems](page 337)
HWE1314A
Check method and remedy
Refer to the following page(s).
[8-10-3 Checking the Compressor for Ground Fault and Coil Resistance
Problems](page 339)
Refer to the following page(s).
[8-10-2 Checking the Inverter Board Error Detection Circuit](page 339)
[8-10-3 Checking the Compressor for Ground Fault and Coil Resistance
Problems](page 339)
[8-10-4 Checking the Inverter for Damage at No-Load](page 339)
[8-10-5 Checking the Inverter for Damage during Compressor Opera-
tion](page 340)
[8-10-11 Checking the Installation Conditions](page 343)
Check method and remedy
Refer to the following page(s).
[8-10-7 Checking the Fan Motor for Ground Fault and Coil Resistance
Problems](page 341)
Refer to the following page(s).
[8-10-8 Checking the Fan Board Error Detection Circuit at No
Load](page 341)
[8-10-9 Checking the Fan Inverter for Damage at No Load](page 342)
[8-10-10 Checking the Fan Inverter for Damage with Load](page 343)
- 251 -
GB