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    smd4930's Avatar
    smd4930 Posts: 2, Reputation: 1
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    #1

    Nov 14, 2009, 07:55 PM
    Honeywell 230B Instal ?
    I am attempting to install a new Honeywell RTH230B. It has a 5 wire hook up but the old unit I am replacing has a 6 wire hook up. On the old unit the wiring is Yellow-Y, Green-G, Red-R, Brown-O, White-W2, and Blue-C

    I understand I need to use the jumper, but where and where do I hook the other wires up to?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #2

    Nov 14, 2009, 10:58 PM

    Manual is here: http://customer.honeywell.com/TechLi...0s/69-1800.pdf

    On page 1, I states: Note: These thermostats are not compatible with heat pumps or multi-stage systems.

    You have a heat pump with aux/emg heat (W2). Obvious because of the "O" wire.

    The stat you have won't work.

    FYI: Most of the time, the "C" wire is optional when the stat uses batteries for power. Batteries are used in some stats because the old mercury switch thermostats didn't require a common.
    smd4930's Avatar
    smd4930 Posts: 2, Reputation: 1
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    #3

    Nov 15, 2009, 07:34 PM
    Thanks for the answer/responce. I figured that out this morning after reading the back of the packaging a little closer. After being opened, hopfully Home Depot will accept it back.

    Thanks again.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #4

    Nov 16, 2009, 04:27 AM
    Quote Originally Posted by smd4930 View Post
    Hopefully Home Depot will accept it back.
    There isn't much that they won't take back. Just look at all the taped-up packages next time you visit. :rolleyes:
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