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

    Sep 17, 2006, 12:20 PM
    Honeywell RTH3100c Wiring Question
    I have a Goodman 5 ton 13 seer heat pump. We have a pre-existing heating unit (electric) that is to be used for just Emergency heat. I connected all the wires, but there was a question that came up. The manual said that if the old thermostat had w1, w2 and why wires, I need to contact a heating cooling contractor. My old thermostat has a W2 and Y wire. Should I plug the W2 wire into the Aux slot or should I cap it off? All that we want to do is have the heat pump work as heat/ac and the pre-existing unit as Emergency Heat, not auxiliary heat. This is a brand new home so I have not used the heat in the house before. I do not think the pre-existing unit was wired for auxiliary heat, only emergency heat. When I tested the heat after installing the new thermostat, it blew hot air, the heat pump came on, but it was saying auxiliary heat. I'm not sure if the heat pump & furnace both came on. I am wired using:
    E - E
    w2 - Aux
    Y - Y
    G - G
    O - O
    R - R
    There were no wires for L, B, and C, so they were not used.

    Should the W2 go to Y and Y to Aux, or is it OK? Please help.
    Thank you.
    juggallojed's Avatar
    juggallojed Posts: 165, Reputation: 10
    Junior Member
    		  
    #2

    Sep 22, 2006, 03:41 PM
    Quote Originally Posted by bailsmb
    I have a Goodman 5 ton 13 seer heat pump. We have a pre-existing heating unit (electric) that is to be used for just Emergency heat. I connected all the wires, but there was a question that came up. The manual said that if the old thermostat had w1, w2 and y wires, I need to contact a heating cooling contractor. My old thermostat has a W2 and Y wire. Should I plug the W2 wire into the Aux slot or should I cap it off? All that we want to do is have the heat pump work as heat/ac and the pre-existing unit as Emergency Heat, not auxillary heat. This is a brand new home so I have not used the heat in the house before. I do not think the pre-existing unit was wired for auxillary heat, only emergency heat. When I tested the heat after installing the new thermostat, it blew hot air, the heat pump came on, but it was saying auxillary heat. I'm not sure if the heat pump & furnace both came on. I am wired using:
    E - E
    w2 - Aux
    Y - Y
    G - G
    O - O
    R - R
    there were no wires fo L, B, and C, so they were not used.

    Should the W2 go to Y and Y to Aux, or is it OK? Please help.
    Thank you.

    Seems OK to me... umm is there a fuse in the 24v control circuit? Might want to add one for protection just in case its wrong
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