Freeze Protection
(Boiler has detected water temperature below 34ºF (1ºC).
This Error Code will go away when the freezing condition is remedied.
If Error happens again:
- Ensure boiler is located in a mechanical room protected from freezing conditions.
- Ensure all valves are open to the boiler, there are no leaks.
- Check wiring connections to low water level sensor. Ensure all are secure.
- Check low water level sensor resistance. If resistance is zero, replace the sensor.
- If the problem persists, replace the main control.
