How do you get your boiler to restart if you ran out of oil?

To restart your boiler after running out of oil, first, refill the oil tank. Next, locate the boiler's reset button, usually found on the burner control. Press the reset button to restart the burner; it may take a few minutes for the system to prime and start. If the boiler doesn't restart, you may need to bleed the oil line to remove any air trapped in the system.