Error Codes [4250, 4255, 4256] Detail Code 101 - Mitsubishi Electric PUHY-P200 Service Handbook

[7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ]
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
Cause
(1) Inverter output related
(2) The model selection
switches (SW5-3 - 5-8) on
the outdoor unit are set
incorrectly.
In the case of 4255 and 4256
Cause
(1) Fan motor abnormality
(2) Fan board failure
For inverter-related error codes, refer to the following page(s). [8-9 Troubleshooting Inverter Problems](page 264)
HWE14040
Check method and remedy
Refer to the following page(s).
[8-9-2 Checking the Inverter Board Error Detection Circuit](page 266)
[8-9-3 Checking the Compressor for Ground Fault and Coil Resistance Prob-
lems](page 266)
[8-9-4 Checking the Inverter for Damage at No-Load](page 266)
[8-9-5 Checking the Inverter for Damage during Compressor Operation](page 267)
[8-9-11 Checking the Installation Conditions](page 271)
Check the IGBT module resistance value of the INV board, if no problems are
found.
[8-9-15 Troubleshooting Problems with IGBT Module](page 273)
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
227)
Check method and remedy
Refer to the following page(s). [8-9-7 Checking the Fan Motor for Ground Fault and
Coil Resistance Problems](page 269)
Refer to the following page(s).
[8-9-8 Checking the Fan Board Error Detection Circuit at No Load](page 269)
[8-9-9 Checking the Fan Inverter for Damage at No Load](page 270)
[8-9-10 Checking the Fan Inverter for Damage with Load](page 271)
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