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    Mr T's Avatar
    Mr T Posts: 1, Reputation: 1
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    #1

    Aug 21, 2007, 06:33 AM
    How to connect a 4 wire thermostat?
    I'm trying to wire a 4 wire theromostat but I need to figure out what wire goes to the right terminal. The red is power, the green is fan, but the blue and the white I not sure. The Termostat is a hunter 40035a model. The terminals on it are rh,rc with a jumper wire and g fan, y air conditioner, w heat. Can anybody help?

    Mr. T
    acetc's Avatar
    acetc Posts: 1,004, Reputation: 79
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    #2

    Aug 21, 2007, 04:45 PM
    Connect white wire to "W" , Connect green wire to "G" red wire to "RH&RC", blue wire to "Y", looks like some one substituted a blue wire for a yellow wire (probable not a yellow wire there) Good luck, Mike
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