ABB A2C3 fault code meaning
ABB / A2C3
Series: ACH531, ACQ531
BURectifier difference
drive
Meaning: Warning from the branch device difference check between CDX and CDY.
Possible causes
Source: ACH531 Firmware Manual P125; ACQ531 Firmware Manual P107
Series: ACS530
Poor BU communication
drive
Meaning: Communication difference detection warning for branch units CDX and CDY.
Possible causes
Source: ACS530 Firmware Manual P259