Atwood furnace blower works but no heat

[cgseanp]

Hello, I can’t get my Atwood furnace to blow heat. The blower kicks on and blows a lot of cold air, but it never warms up. Propane is in and all other propane appliances work. Any ideas?

Also, what is the on/off switch for that is on the blower? It seems to work whether the switch is on or off so I’m not sure what its purpose is. Thanks

[TG Twinkie]

Is there a gas shut off valve below the belly pan in the propane line which feeds the furnace?

[cgseanp]

Nope doesn’t seem to be any gas shut off switch underneath.

[LAWBC]

Have you done any maintenance on it ie. cleaning out the camber? One thing you might check for dust in the unit. If you have excessive dust that will trap the" sail switch" and stop the unit from igniting. It is a safety feature. Check you manual for location of the switch on your unit. if you know you have gas to the furnace then it could be one of two things.


Check you your control board your manual will address the codes for a blinking, and point to a specific area, you should see a small diode light you may have failed circuit board .



The electronic igniter,( mine had a crack on the ceramic insulator and this would short out causing the unit not to fire). You should hear the igniter ticking several times prior to ignition, if you don't hear that ticking then look there.

[cgseanp]

So I found the problem! (and a pretty obvious one at that). There is a white plug that plugs into the side of the circuit board, and it had come unplugged! Plugged it in and it fired right up