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    samiam1060's Avatar
    samiam1060 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jun 1, 2008, 10:25 PM
    Wiring my new Thermostat (Honeywell RTH230B)
    So I bought a new Thermostat and have tried many different wiring configurations to get this thing to work and nothing seems to be right.

    The old thermostat has 7 wiring posts.

    G - Y - W - RH - RC - RC - B - O

    There is a short piece of wire that connects the Y to the W. And there is also a short piece of wire connecting the RH to the RC.

    There are 4 wires coming out of the wall. Green to the G. White to the W. Red to the RC and Blue to the O.

    The back of the thermostat I bought has RH - RC - W - Y - G

    The manufacturer of the old Thermostat which works sometimes is Alaskan AC and they want to charge me $250 just for a new thermostat. I just bought the house in October and I can't see spending that much on something that should cost 80 bucks or less.

    I live in Arizona and it is starting to get hot!!

    Please help me.

    SamIam
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jun 2, 2008, 12:02 AM
    You have the wrong kind of thermostat. Your old thermostat looks like it was for a heat pump system and the new one is not. O is for a reversing valve and they are used in a heat pump system.
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