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    vanduynhoven1's Avatar
    vanduynhoven1 Posts: 2, Reputation: 1
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    #1

    Mar 20, 2009, 06:36 PM
    termistat wiring
    I have a 6 wire thermostat

    X - blue
    W2 - white
    R - red
    g - green
    o - orange
    y - yellow

    The thermostat is an old LR69071

    Now my heat pump does not wirk at all after trying to install a white-rodgers 1F83-277
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Mar 20, 2009, 09:32 PM
    Sounds like crossed up wiring somewhere did instructions come with the w-r?
    vanduynhoven1's Avatar
    vanduynhoven1 Posts: 2, Reputation: 1
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    #3

    Mar 21, 2009, 11:08 AM
    Quote Originally Posted by wmproop View Post
    sounds like crossed up wiring somewhere did instructions come with the w-r?
    What I am looking for is what the X on the old thermostat is for
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #4

    Mar 21, 2009, 11:35 AM
    Is probably the common wire,you said it was blue,go to the furnace trace the tstat wires where they hook to furnace what is the blue wire going to?

    The common isn`t necessary it sends 24 volts to the tsat so you can run without batteries in most cases,, but check it out
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #5

    Mar 22, 2009, 04:37 AM
    Based on your description, "X" is the low voltage common (as wmproop stated). If the new thermostat has a "C" terminal it would connect there. Be sure "Rc" and "Rh" are jumpered together (if both are present).
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