Mitsubishi Electric PURY-EP200YLM-A, Service Handbook

Page: 261 / 434

[7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ]
- 250 -
HWE1314A GB
7-6-18 Error Codes [4250, 4255, 4256] Detail Code 101
1. Error code definition
IPM error (Detail code 101)
2. Error definition and error detection method
In the case of 4250
If an overcurrent is detected by the overcurrent detection resistor RSH (R001 when INV30YC) on the INV board.
In the case of 4255 and 4256
IPM error signal is detected.
3. Cause, check method and remedy
In the case of 4250
In the case of 4255 and 4256
For inverter-related error codes, refer to the following page(s). [8-10 Troubleshooting Inverter Problems](page 337)
Cause Check method and remedy
(1) Inverter output related 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 Prob-
lems](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 Operation](page
340)
[8-10-11 Checking the Installation Conditions](page 343)
Check the IGBT module resistance value of the INV board, if no problems are
found.
[8-10-15 Troubleshooting Problems with IGBT Module](page 345)
(2) The model selection
switches (SW5-3 - 5-8) on
the outdoor unit are set
incorrectly.
Check the setting for the model selection switch on the outdoor unit (Dipswitches
SW5-3 - 5-8 on the outdoor unit control board).
For switch settings, refer to the following page(s). [7-9-2 Error Code [7101]](page
286)
Cause Check method and remedy
(1) Fan motor abnormality Refer to the following page(s). [8-10-7 Checking the Fan Motor for Ground Fault
and Coil Resistance Problems](page 341)
(2) Fan board failure 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)