orezok
Elite Member
OP here. Dodged a bullet. The furnace is a horizontal model mounted in the attic. Climbed up there and wiggled all the wires on the mother board. Also checked the door switch on the blower section as once before the door came loose and cut the power to the unit. I had put a screw in the door to hold it tight after that episode. I don't know which fixed it, but I put the door back on, tightened the screw and all is well again. :cool2::dance1: