My Furnace will not come on, What should I do?
            

Here are a couple of things you can check, that sometimes people over look:

• 1st Check   ▬►  Quick help reference.

• Have you taken any doors off ? On most models of today's furnaces when you take off the bottom door (Blower door) in particular, there is what they call a door interlock switch. I have seen people remove the door to check the filter or something, not aware that they just have reset the motherboard (Computer) on the furnace and if they only got the door back on properly it would have worked for them. Be certain that all door's are on correctly

• Plugged air filter! A plugged air filter will cause the furnace to prematurely cycle on & off, not allowing the unit to be on long enough to heat the application. Check Air Filter Very Common Problem