Re: [VAL] Furnace Fan Won't Shut Off

[Charlie/Betty Burke <cbburke@xxxxxxxxxxxxx>]

Dave,

There is a temp switch on the burner chamber of the furnace that 
monitors burner temp. It overrides the thermostat and assures the burner 
chamber is adequately cooled down before shutting the fan off. While it 
is unusual it is not uncommon for ambient air temperature to close the 
switch and allow the fan to run. Not unlike the electric cooling fans 
used on some cars.
What is more likely is that the switch has either been replaced with the 
wrong part or changed value.
If you have any service related data with you coach you can find the 
location and the correct part for that switch. If not someone on the 
list can.

Charlie