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    Cosube's Avatar
    Cosube Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jan 26, 2008, 08:11 PM
    Wiring of a Honeywell RTH221
    I uninstalled the cables on my old thermostat and can't figure out how to match the cables to the lettered terminals or the RTH221. I have four cables: white, orange, red and black. Can someone help me! Thanks in advance.l
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jan 26, 2008, 08:23 PM
    Look at the stick notes at the beginning of this board. Your answer is there.
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