Question about Hunter Fan Company 5/1/1 Programmable Thermostat

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The fan never goes off even though it is set on "auto"

What suggestions do you have?

Posted by betellis on


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More information please.

Posted on Jan 29, 2008


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I have a Rheem Classic Super Quiet 80 gas furnace (for heat). The fan stops when the "heat" turns on.

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These limits come in various sizes and brands but this is the most common one. If your machine is a newer model then that control board has a fried or stuck relay on it.

If you need further help, reach me via phone at

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Low voltage wiring problem.check wiring diagram/converson chart carefully as the termnal letters vary by brand of unit.make sure color code is correct btween each appliance itself.good luck!

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