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    kdclemson's Avatar
    kdclemson Posts: 1, Reputation: 1
    New Member
    		  
    #1

    May 5, 2009, 05:17 PM
    Honeywell RTH 6400
    I need help with wiring my new Honeywell RTH 6400 Thermostat.

    The old honeywell had the following colors and connections:
    E: brown wire
    AUX: white wire
    Y: yellow
    G: Green
    O: Orange
    R: Red
    C: Blue
    L: Brown

    Extra unused black wire.

    The new system calls for:
    G
    W
    Y
    R
    Rc

    We used Green, Orange, yellow, and Red since there was a jumper between the Red and Rc but it's only blowing out hot air. PLEASE HELP! IT's HOT IN SC!!
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
    Ultra Member
    		  
    #2

    May 6, 2009, 01:35 PM

    I take it you have a heatpump? You need a different t-sta
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