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    jdn1979 Posts: 1, Reputation: 1
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    Oct 18, 2010, 07:50 AM
    Converting from a Baystat240a to a Honeywell RTH7400D
    Hello I can't seem to get the connections hooked up properly, if the air comes on it does not seem that cold and my ac unit will start to hiss after about 90 seconds. Here are my colors
    Red
    Brown
    Black
    Blue
    Green
    Yellow
    White
    Orange
    If I hook up the Orange to the O/B (W) connection then where does the white wire go? If you could just start from scratch as if I didn't hook up any wires that would be great. My ac is a trane system not sure if I have a heat pump or not.

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