My Amana furnace fan stays on after the air conditioner unit has shut off. It used to run for a few seconds after the compressor shut off but now it doesn't stop unless you cut the juice to it. The White-Rogers thermostat seems to have OK batteries in it. Any clues? Thanks for you help.
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It sounds like you probably have a fan relay stuck in the closed position. You would have to replace the fan relay. -
Is the fan relay the same as the fan limit control? Thanks!Comment
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The fan relay and fan limit contol should be two separate switches, however on some units they use a combined fan and limit control.
If you open the control section of your furnace there should be a wiring schematic pasted on the inside of the cover.Comment
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No, the fan relay is a separate part.Comment
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Has anyone had an occurrence of a Laser 730 or 731 over firing?
The top of the heat chamber and the heat exchanger glow red on high when this occurs....
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