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  1. #1
    Jody Humbert's Avatar
    Jody Humbert Guest

    Default Two stage furnace

    Does anyone know if a 23 year old Trane two stage furnace should completely shut off(burners and blower) while going through its cycles. I thought only the burner shuts on and off but the blower continues to blow the air. Thanks for your comments.

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  2. #2
    David Bell's Avatar
    David Bell Guest

    Default Re: Two stage furnace

    The fan is controlled by a temp sensing device (klixon) located in the heat exchanger area, if the heat exchanger is cool it shuts the fan off. The control board may also have a blower delay or post purge setting.


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