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    Tinachris3's Avatar
    Tinachris3 Posts: 2, Reputation: 1
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    #1

    May 12, 2013, 01:13 PM
    2 wire thermostat
    I have 2 wires yellow and red and I am trying to change my thermostat to a digital one but can only get it to cut on and off for heat. Can someone please help. I called Honey well and they only made me very mad. The letters are Rc, R, Y, C, W and G. I have an old system there is a place where the compressor( I think that is what it is ) is at in my hall where that has 2 button one to put on heat or cool the other for on or off. Please help!!
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    May 12, 2013, 02:39 PM
    With 2 wires you only have heat or cool, not both, need new wiring. Did you have air? Heat?
    Tinachris3's Avatar
    Tinachris3 Posts: 2, Reputation: 1
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    #3

    May 12, 2013, 04:36 PM
    ! Can get both but only the heat will cut off automatically
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #4

    May 12, 2013, 06:10 PM
    Is this a mobile home?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #5

    May 12, 2013, 06:53 PM
    Some old Coleman heaters were 2 wire, heat and AC were controlled at the unit, not the thermostat-I believe.
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #6

    May 13, 2013, 05:14 PM
    Quote Originally Posted by ma0641 View Post
    Some old Coleman heaters were 2 wire, heat and AC were controlled at the unit, not the thermostat-I believe.
    If I remember correctly, some of the Miller/Intertherms were the same way.
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