kmgk92 wrote:
I have no idea where to find the circuit boards. I'm guessing I would need to pull the unit out.
Not meaning to be a smart-a**, but if you don't know much about the furnace....it may be money ahead to get a RV tech (gas certified) to take a look at it. BTW...the circuit board is behind the exterior panel on a Suburban furnace...unit doesn't have to come out. I agree with others, you have to have basic purge fan operation from the get go or no other circuits downstream will work. It's a safety thing. rockin'