Bill,
We had a company come out and they said it is the inducer motor but the cost for the part is ispensive. They want over 300 just for the part.

Hello, I have a coleman that almost every year we have had to replace the pressure switch. I just went and bought a new one and it still isnt working. I will turn the thermasoat on and i hear a whinning noise but no blower or nothing like that then after about a minute it flashes 3 times.. Telling m...