Furnace not working
My furnace will not come on at all. It is an Atwood 8535IVDCLP. I found the procedure to bypass the thermostat and it works when I do that. So I was about to order a new thermostat but I got thinking....
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So I did like Doug suggested and swapped boards from front to rear. Still no furnace so I figured I would just order a new board since the rear unit is the original- 13 years old. Got it put in today and furnace still doesn’t work. I ran out of time so didn’t get to check for power on the blue wires at the rooftop unit. Will try again next weekend. If I do still have power to one of the blue wires but not the other, what else could it be? 3 bad boards- not very likely but my luck does run that way sometimes.
