ABB A8C5 fault code meaning
ABB / A8C5
Series: ACH580
ULC Invalid underload table
drive
Meaning: User load curve: Invalid underload curve point.
Possible causes
Source: ACH580 HVAC Control Program Firmware Manual P282
Series: ACS180, ACS280, ACS380
ULC Invalid underload table
drive
Meaning: User load curve; underload curve point is invalid.
Possible causes
Source: ACS180 Machinery Control Program Firmware Manual P318; ACS280 Firmware Manual P337; ACS380 Machinery Control Program Firmware Manual P433