Hi everyone. I am new here and this is my first post. I am freezing at the moment too. :-( I have a St. Croix Afton Bay, I don't know how old it is as it came with my house. The past few weeks I noticed a lot of noise coming from the combustion fan. I was reading on forums and bought a replacement from CSH incorporated. Well the wiring is different. The new blower has two black wires and a ground to the housing. My old one has three wires, one white, one brown and one black. I figured that the black would be ground and I would guess on the other two, and just leave original ground disconnected. I tried that and the fan turns on and sounds great but nothing else does. Can someone please help? Thank you.