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

    Jan 3, 2008, 08:46 PM
    Honeywell rth221
    I am trying to install a new Honeywell rth221 thermostat. I have three wires that are white, red and green. I must be installing them incorrectly because the heat does not seem to come on no matter how I change them. Please help.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #2

    Jan 3, 2008, 10:23 PM
    White to W
    Red to Rh
    Green to G
    therinnaiguy's Avatar
    therinnaiguy Posts: 153, Reputation: 5
    Junior Member
    		  
    #3

    Jan 4, 2008, 07:26 AM
    You may have popped the fuse in the furnace replacing the thermostat witout turning off the power first. KISS is correct in his recommendation.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #4

    Jan 4, 2008, 11:13 AM
    OOPs, forgot about that one (popping the fuse).
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