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

    Nov 20, 2016, 06:09 PM
    2 wire thermostat
    I changed our 2 wire taco thermostat to a new programmable Honeywell. The taco only has 2 wires; a white and a black. The white was hooked to the Y connector and the black was hooked to the R connector. I hooked the black to the R connector on the new system and the white to the W connector. Is this right? The temperature keeps rising and it's getting way to hot in here. Help!
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Nov 20, 2016, 09:30 PM
    Try Rh and W
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
    Ultra Member
    		  
    #3

    Nov 21, 2016, 10:07 PM
    How thick were these wires? It's rare to have a black and white unless it is line voltage. I suspect you may have used the wrong thermostat.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #4

    Nov 22, 2016, 07:12 PM
    What kind of furnace do you have and is there AC
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
    Ultra Member
    		  
    #5

    Nov 22, 2016, 07:21 PM
    If there is only two wires it's either heat or cool... not both.
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