Mitsubishi Electric PUHY-(E)P200 Service Handbook page 182

[ IX Troubleshooting ]
1. Error Code
4220
4225
Bus voltage rise (Detail code 109)
2. Error definition and error detection method
If Vdc 830V or more 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 inverter board.
In the case of 4220: INV board
In the case of 4225: Fan board
Refer to section - 6 - "Inverter" under part [4] "Trouble shooting principal parts" for error codes related to the
inverter.(page 232)
1. Error Code
4220
4225
Logic error (Detail code No.111)
2. Error definition and error detection method
H/W error
If only the H/W error logic circuit operates, and no identifiable error is detected.
3. Cause, Check method and remedy
In the case of 4220
(1) External noise
(2) INV board failure
In the case of 4225
(1) External noise
(2) Fan board failure
Refer to section - 6 - "Inverter" under part [4] "Trouble shooting principal parts" for error codes related to the
inverter.(page 232)
HWE07010
Cause
Cause
Check method and remedy
Refer to 9 [4] - 6 - (2) [1].
Check method and remedy
Refer to 9 [4] - 6 - (2) [6].
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GB