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

    Feb 20, 2008, 07:54 PM
    Constant blower on when stat is connected
    I had to replace a fan limit switch, all works correctly but if I connect the stat blower runs constant. Ireplaced stat but same problem could it be in the 2wire?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Feb 21, 2008, 02:29 AM
    With a two wire thermostat system the burner should come on and heat the unit then the blower should come on. You might have wired something incorrectly when you changed the fan limit control.
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