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    DAN GREENE's Avatar
    DAN GREENE Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 6, 2009, 08:59 AM
    thermostat replacement
    I am replacing a white-rodgers 1f58-72 thermostat with a hunter 44860. I have a wire marked x1 wich is blue that does not show on the hunter wire diagram I have a 2 stage heat and 1 stage coolong system.. is the x1 the second heat stage?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jan 6, 2009, 02:24 PM
    The only true way to know is track the blue wire down to the furnace and see where it hooks up to.
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