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I have a Duo-Therm Furnance in my RV. The Furnace seems to work fine except when it shuts off the blower does not stay on to cool the unit down. Would this be a bad fan switch?
Yep - there is a thermal switch in the fan circuit that allows the fan to run after the burner kicks off. Part may be hard to find and you will need the part number - if you don't have the parts book try Dale Melenia at Dometic -- He has a bunch of the older parts books - Mention my name -- Lots of luck Bill Hendrix