The Emergency Burner Shut Off Switch Was Engaged.

Remove the front panel and look for the igniter/sensor. Remove the front panel and look for the ignitor/sensor. It is usually located near where the flames shoot out of the burners.

For This Case Or If Your Blower Fan Or Furnace Fan Won't Start At All, See Fan Won't Start Where We Give 12 Reasons Why The Fan Won't Run.

The home’s thermostat is off or set incorrectly. It is usually located near where the flames shoot out of the burners. There’s no heating oil in the tank

Here’s A Short List Of The Most Common Reasons Why Your Heating Oil Furnace Won’t Start Up.

There’s no electricity reaching the home. Refer to your user manual to locate the ignitor. Refer to your user manual to locate the igniter.