Error Codes [4220, 4225, 4226] Detail Code 109; Error Code [4220] Detail Code 110 - Mitsubishi Electric HP120TNU-A Service Handbook

[7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ]
7-6-10

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. (YNU)
If Vdc 400V is detected during inverter operation. (TNU)
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 and 4226: Fan board
For inverter-related error codes, refer to the following page(s). [8-10 Troubleshooting Inverter Problems]
7-6-11

Error Code [4220] Detail Code 110

1. Error code definition
VDC error (Detail code 110)
2. Error definition and error detection method
BUS voltage error When Vdc is equal to or greater than 814 volts (hardware detection) (YNU)
BUS voltage error When Vdc is equal to or greater than 407 volts (hardware detection) (TNU)
3. Cause, check method and remedy
Details of 4220 error: See No. 108 and 109.
For inverter-related error codes, refer to the following page(s). [8-10 Troubleshooting Inverter Problems]
HWE18220_GB
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