Furnace doesn't always light
Is there a good thread for troubleshooting furnace problems? Mine is not quite 3 years old and has worked fine until this week. Sometimes when the thermostat calls for heat the fan comes on but the...
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The furnace is an Atwood 8940-III DCLP. I have the manual now so I'll take off the cover from the fan to check out the sail switch. Pulling the exterior cover off showed no dirt or damage. The problem shows up equally whether or not on shore power.
