Mitsubishi Electric PUHY-HP200 Service Handbook page 145

[ IX Troubleshooting ]
1. Error Code
4220
4225
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.
In the case of 4220: INV board
In the case of 4225: Fan board
Refer to section -6- "Inverter" under part [4] Troubleshooting Principal Parts for error codes related to the inverter.(page 195)
1. Error Code
4220
4225
Logic error (Detail code 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] Troubleshooting Principal Parts for error codes related to the inverter.(page 195)
HWE08110
Cause
Cause
Check method and remedy
Refer to IX [4]-6-(2)[1].(page 197)
Check method and remedy
Refer to IX [4]-6-(2)[6].(page 198)
- 136 - GB