Welcome to our ‘How-To’ video series!
Boiler shutting off too soon
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- Check the thermostat and make sure it is set to the proper temperature. Raise it if too low.
- Inspect the low water cut-off switch and make sure it is functioning properly and at the right level. Adjust if needed.
- Check for sediment buildup in the heat exchanger that could trigger the high limit switch to trip prematurely. Descale if necessary.
- Test the thermostat sensors with a multimeter for calibration. Replace any inaccurate sensors.
- Refill to proper water level if low water pressure is causing early shutdown. Check for leaks.
- Purge air from system pipes and radiators that can get trapped, impeding water circulation.
- Clean air screens on the oil burner assembly if dirty. Clogged screens can cause flame rollout and early shutdown.
