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    cbeetch's Avatar
    cbeetch Posts: 4, Reputation: 1
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    #1

    Jan 23, 2011, 05:51 PM
    Honeywell Thermostat RTH6350D extra wire (Brown X)?
    I have attached all the wires into the labeled connector but I have a brown wire with an X label remaining. Does it double with another wire in one of the connections?
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    T-Top Posts: 1,871, Reputation: 100
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    #2

    Jan 23, 2011, 06:12 PM
    How did your old thermostat wire and the options of the new thermostat? All info will help.
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    cbeetch Posts: 4, Reputation: 1
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    #3

    Jan 23, 2011, 06:34 PM
    Old thermostat was a RUUD (also the brand of my gas heater and heat pump) dial style. The old thermostat had a place for all the wires. I now have an extra brown wire labeled "X".
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    cbeetch Posts: 4, Reputation: 1
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    #4

    Jan 23, 2011, 06:36 PM
    This new thermostat is digital opposed to the dial. My old thermostat had the option to run aux heat (heat pump) and emergency heat (no heat pump).
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    T-Top Posts: 1,871, Reputation: 100
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    #5

    Jan 23, 2011, 07:03 PM
    Once again not knowing your system and setup its hard to say. X maybe common or the circuit for aux heat.
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    cbeetch Posts: 4, Reputation: 1
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    #6

    Jan 23, 2011, 07:41 PM
    I figured it out. The brown wire "X" is for the unit power. The Honeywell RTH6350D uses a battery for power and so this wire needs to be taped off and left open.
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