LAST FAULT shows the code of the most recently recorded fault, displayed as a named fault from the fault listing. The manual's first action is: “n - Fault code of the last recorded fault. The fault code is displayed as a name. See section Fault listing on page 260 for the fault codes and names. The fault name shown for this parameter may be shorter than the corresponding name in the fault listing, which shows the names as they are shown in the fault display.”
- Model
- ABB ACS550-01 / ACS550-U1
- Display shows
- LAST FAULT (0401)
- Type
- Fault code
- Source
- Manual p. 114
What 0401 means
LAST FAULT p. 114
Common causes
- 0 - Clear the fault history (on panel = NO RECORD). p. 114
What to do
- n - Fault code of the last recorded fault. The fault code is displayed as a name. See section Fault listing on page 260 for the fault codes and names. The fault name shown for this parameter may be shorter than the corresponding name in the fault listing, which shows the names as they are shown in the fault display. p. 114
Before you service the product, read the safety instructions in the manual p. 6.
If 0401 is still not resolved
- contact your local ABB representative for replacement p. 6 “Never attempt to repair a malfunctioning drive; contact your local ABB representative for replacement.”
- For more technical information, contact your local ABB representative. p. 7 “For more technical information, contact your local ABB representative.”
This page summarises what the manufacturer’s manual says about 0401; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with ABB. Found a mistake? Report an error.