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-   -   Honeywell RTH 6400 (https://www.askmehelpdesk.com/showthread.php?t=350208)

  • May 5, 2009, 05:17 PM
    kdclemson
    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!!
  • May 6, 2009, 01:35 PM
    Joshdta

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

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