AceOwner, IIRC, and it has been awhile since I had problems with my furnace, but if you switch your t-stat to the off position for several mins, the furnace board and t-stat should reset or something like that.
Oneilkeys, my circuit board is located in the top left of my furnace cavity shown in the pic below. Exhaust is located below the board and extension pipe is attached to the cover..........the cover with the reversed louvers.