8 Actions to Bleed & Reset Your Furnace after Heating Oil Runs Dry
https://wiki-byte.win/index.php/Eight_Steps_to_Bleed_%26_Reset_Your_Heater_after_Running_Out_of_Heating_Oil
You remain in the middle of a cold winter season night when your oil furnace runs out of fuel. If the oil furnace doesn't sit back on after filling up the tank, you might need to bleed and reboot the furnace manually.