I have a forced air oil furnace, it's aprox: 5 years old I also have a oil fired water heater.
My thermostat will call for heat but the furnace won't come on unless I push the reset button, I thought it was water in my oil but my water heater works fine and the oil line for the water heater runs out of the furnace.
What could the problem be of my furnace, and what can I do to fix it.