Error codeAL-42
AL-42 means main power failure has occurred. The manual's first action is: “Check the power unit wiring and power supply.”
- Model
- LS ELECTRIC L7SB Series (400V)
- Display shows
- RST power fail (AL-42)
- Type
- Error code
- Source
- Manual p. 141
What AL-42 means
RST power fail p. 141
Common causes
- Main power failure p. 141
What to do
- Check the power unit wiring and power supply. p. 141
If AL-42 is still not resolved
The manual gives no further instruction for this code. Open the code table in the PDF or contact LS ELECTRIC service.
This page summarises what the manufacturer’s manual says about AL-42; 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 LS ELECTRIC. Found a mistake? Report an error.