Mitsubishi Electric PURY-P72 Service Handbook page 231

[ IX Troubleshooting ]
1. Error Code
4220
4225 (TKMU-A)
4226
VDC error (Detail code 110)
2. Error definition and error detection method
Bus voltage abnormality If Vdc
3. Cause, check method and remedy
Same as detail code No.108 and 109 of 4220 error
Refer to section -7- "Inverter (TKMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 310)
1. Error Code
4220
4225 (TKMU-A)
4226
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
(3) IPM failure (P96, P120, P144 models only)
(4) DCCT failure (P96, P120, P144 models only)
In the case of 4225 and 4226
(1) External noise
(2) Fan board failure
Refer to section -7- "Inverter (TKMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 310)
HWE1116D
400V or Vdc 160V is detected. (H/W detection)
Cause
Cause
- 222 -
Check method and remedy
Refer to IX [4] -7- (2) [1].(page 312)
Replace the IPM.
Replace the DCCT.
Check method and remedy
Refer to IX [4] -7- (2) [6], [7], [8].(page 314)
GB