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

    Nov 17, 2007, 10:14 AM
    Honeywell RTH110B
    We are trying to wire a Honeywell RTH110B thermostat to our old one and the old one has 7 wires, but the new one only has hookups for 5. Where do the extra two wires go?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 17, 2007, 07:44 PM
    You probably have the wrong thermostat. Is your system a heat pump with electric heat?
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