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    ahodges's Avatar
    ahodges Posts: 1, Reputation: 1
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    #1

    Feb 19, 2007, 01:14 PM
    Air conditioner common wire
    I just installed a digital thermostat. The common wire does not seem to work. How can I get it to work?
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
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    #2

    Feb 19, 2007, 03:39 PM
    Is it connected to the furnace at the other end of the wire?
    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
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    #3

    Feb 19, 2007, 09:54 PM
    What are you calling the common wire. Most thermostats are battery operated and do not need a common to operate... send more info such how many wires, is it a heat pump, do you have emergency heat, do you have AC.
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