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    suleegoh Posts: 1, Reputation: 1
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    Jun 17, 2011, 09:34 PM
    How to replace honeywell T8401C and to the honeywell RTH2300 model.
    In the old setting, red wire -R, white wire -W, green wire-G, yellow wire -Y, and blue wire -C.
    In the RTH2300 model, I have the R,RC,W,G,Y,O/B options. I tried connection R,W,G and Y to the corresponding wired colors, and left the blue wire unconnected. Can someone please help. Thank you.

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