said by jlsjoe:I pressed the limit switch mounted on the side of the combustion chamber, it did not appear to be out, now it is working! I will see how it acts when it cycles to a new heating cycle. I think I may have wasted some money and you peoples time. Very sorry, will report further findings.
Joe
that's odd, if there's no power to the board, the blower shouldn't be coming on!. and if there IS power to the board, there should be an LED coming on to indicate a fault!. that limit switch must be wired funky!. anyway, glad it's working, and you really didn't waste money, the money you spent could have gone to a tech for working on the furnace!. anyway, if that problem happens again, it may be that funky wired limit switch needs replacing.(assuming it's not truly overheating). you'd think that would be auto reset not manual reset!.