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    redbone1954's Avatar
    redbone1954 Posts: 1, Reputation: 1
    New Member
     
    #1

    Oct 17, 2009, 08:00 AM
    Central heat and airconditioning blower
    When I turn on termostat to heat with blower fan on auto, the blower will not come on, but when I go to just fan it comes on. You can smell the heater coils working but blower will not blow in auto.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Oct 17, 2009, 08:23 AM
    If this is a electric furnace the sequencer or relay that controls the blower motor in the regular heat mode is defective. Take a meter and trace down the ofending circuit and replace part with like same.

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