View single post by dkpd1581
 Posted: Thu Dec 18th, 2008 10:39 pm
PM Quote Reply Full Topic
dkpd1581



Joined: Sun Dec 17th, 2006
Location: Atlanta, Georgia USA
Posts: 199
Status: 
Offline
 Your fan - in the heat mode - is controlled by the combination fan/limit switch made by Honeywell.  See picture number 4 from above with the caption underneath "Thermo-Switch and Gas Valve."

If the fan runs in ON and in AC, then check out your combination fan/limit switch and see that the round dial on it actually rotates in a clockwise position while the burners are lit.  When it reaches a certain temperature the dial will turn past an adjustable pin in the face.  If it passes that location and the fan does not come on, I would suggest replacing the device.

If you could scan in and attach the wire diagram as a PDF in this thread, that might help a bunch of people.

Last edited on Thu Dec 18th, 2008 10:39 pm by dkpd1581



____________________