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

    Oct 25, 2009, 09:52 AM
    Wiring RTH6400 tstat
    Old tstat has the following wire codes some that aren't identified in wiring instructions:
    Old wiring;
    G
    Y1
    R
    E
    W1
    O
    C -states not to use

    Also saw a pink and gray wire not labeled that was pushed back and not used on old tstat
    Can anyone help?
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Oct 25, 2009, 05:30 PM

    This thread should help you understand the color coding better https://www.askmehelpdesk.com/heatin...tml#post268211
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