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Changed out a Honeywell Thermostat with an Aprilaire Thermostat

I changed out a Honeywell Thermostat HPT 18-60 for my Goodman Mfr. Co. Heat Pump, Model CPKE36-1A with an Aprilaire 8870 thermostat, now I have a bad smell when the Emergency heat comes on.

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  • wamsley71 Nov 20, 2008

    Discovered the problem to be that the thermostat was commected for a one stage Heat Pump and not two stage. Thatnks for the help. Don't understand why the difference, but this cured teh smell problem.

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The thermostat was incorrectly hooked up for a one stage heat pump and not a two stage.

Posted on Nov 20, 2008

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The smell is usually dust on the wires for electric resistance heat.The thermostat shouldnt have anything to do with it.

Posted on Nov 20, 2008

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It looks like it is wired properly.

If you have no meter, you could try changing the stat, I reccomend Honeywell or white rodgers.

Let me know if you eliminate the Tstat as the problem and we can go from there.
Chances are its the stat.

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