[flybouy]

Originally Posted by JohnP

Well, I know this isn't the best way to fix an issue. It may only last a short time, but I will let everyone know the next time the furnace lets me down. I'm curious if the banging on the outer shell of the furnace jarred the sail switch which may have stuck or ....????

I wouldn't consider beating on a furnace "fixing it". Whatever caused it to fail will most assuredly return. Likely a sail switch but could be any number of other things. Usually it will fail the next time on the coldest night imaginable, at least that's how my luck runs.