Error Codes [4220, 4225, 4226] Detail Code 109 - Mitsubishi Electric PURY-P200YLM-A(1) Service Handbook

[7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ]
4225
Check the voltage at CNVDC on the Fan board while the inverter is stopped and if it is 420 V or above, check the following
items.
1) Check the voltage at CN72 on the control board. →Go to 3).
2) Check the noise filter coil connections and for coil burnout.
3) Check the wiring connections between the following sections
Between the noise filter board INV board and the Fan board.
4) Check contents 4220
Replace the Fan board if no problems are found.
Check the voltage at CNVDC on the Fan board while the inverter is stopped and if it is less than 420 V, check the following
items.
1) Check the state of the wiring connections between the INV board and the Fan board.
2) Check contents 4220
Replace the Fan board if no problems are found.
In case of 4226 (On the P450, P500, EP400, EP450, and EP500 models, this error code relates to the fan board in the
fan box.)
Check the voltage at CNVDC on the Fan board while the inverter is stopped and if it is 420 V or above, check the following
items.
1) Check the voltage at CN72 on the control board. →Go to 3).
2) Check the noise filter coil connections and for coil burnout.
3) Check the wiring connections between the following sections
Between the noise filter board INV board and the Fan board.
4) Check contents 4220
Replace the Fan board if no problems are found.
Check the voltage at CNVDC on the Fan board while the inverter is stopped and if it is less than 420 V, check the following
items.
1) Check between noise filter board, inverter board, connector board, and fan board.
2) Check contents 4220
Replace the Fan board if no problems are found.
(3) Control board failure
Check that 12VDC is applied to connector CN72 on the control board while the inverter is operating. If voltage is absent or
the wrong voltage is applied, check the fuse F01. Replace the control board if no problems are found with the fuse.
For inverter-related error codes, refer to the following page(s). [8-10 Troubleshooting Inverter Problems](page 337)
7-6-9

Error Codes [4220, 4225, 4226] Detail Code 109

1. Error code definition
Abnormal bus voltage rise (Detail code 109)
2. Error definition and error detection method
If Vdc 830V is detected during inverter operation.
3. Cause, check method and remedy
(1) Different voltage connection
Check the power supply voltage on the power supply terminal block (TB1).
(2) INV board failure
If the problem recurs, replace the INV board or fan board.
In the case of 4220: INV board
In the case of 4225: Fan board
In the case of 4226: Fan board (Fan box side)
For inverter-related error codes, refer to the following page(s). [8-10 Troubleshooting Inverter Problems](page 337)
HWE1314A
- 245 -
GB