Cause of error code Er42

Low Water Cutoff (LWC) Circuit is Open

Solution for error code Er42

Press the Power button to clear the Error Code.
If Error happens again:

- Ensure that the LWC jumper is installed if low water cut off is not in use.
- Ensure that the LWC wires are properly installed (if in use).
- Ensure that the LWC ground wire is properly grounded.
- If the problem persists, replace the main control.