Nothing really ticks me off more than working on junk all day long than stepping into my home shop and listening to this piece of c!?p light off and miss it's blower sequence according to a "Pressure Switch" anamoly! I've replaced everything but the combustion blower assy, removed the pressure switch orfice, and it still does it's thing! Can anyone reccommend something for replacing the Heatcraft board that makes sense? Or is there really a Lennox God out there that would admit there is a problem with this unit somewhere between the combustion blower and the pressure switch!