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    mdc1271's Avatar
    mdc1271 Posts: 3, Reputation: 1
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    #1

    Oct 16, 2011, 11:12 AM
    No Heat, New Thermostat just installed
    New thermostat installed, I have wired it based on the manual, 4 wires- W, are, G, why. I have done all the preset, but have no heat. I tried re-set the main breaker, and I have also checked the pilot on the furnace. Any help would be great. I have my house set at 21 C, and it is only 15 C right now
    JonesHVAC's Avatar
    JonesHVAC Posts: 173, Reputation: 12
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    #2

    Oct 16, 2011, 11:17 AM
    I'm not sure what you are saying with, "4 wires- W, are, G, why." Could you please clarify this?
    mdc1271's Avatar
    mdc1271 Posts: 3, Reputation: 1
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    #3

    Oct 16, 2011, 11:39 AM
    I have 4 wires to be attached to my new thermosat, W- white, R-red, G-green, and Y- black wire. They have all been hooked up based on the manual.
    JonesHVAC's Avatar
    JonesHVAC Posts: 173, Reputation: 12
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    #4

    Oct 16, 2011, 11:44 AM
    Are they attached the same at the furnace though?
    mdc1271's Avatar
    mdc1271 Posts: 3, Reputation: 1
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    #5

    Oct 16, 2011, 12:41 PM
    Furnace and Central Air!
    JonesHVAC's Avatar
    JonesHVAC Posts: 173, Reputation: 12
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    #6

    Oct 16, 2011, 12:48 PM
    Don't let that confuse you... just pay attention to the wires coming from the thermostat, should be four as you stated earlier. There will be two extra wires for the A/C at the furnace... one to C on the board and one to Y on the board. Y should have two connected, one of them being the black from thermostat...
    JonesHVAC's Avatar
    JonesHVAC Posts: 173, Reputation: 12
    Junior Member
    		  
    #7

    Oct 16, 2011, 12:49 PM
    Also, did the system operate before you changed the stat?
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