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    jgrady's Avatar
    jgrady Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Feb 15, 2007, 10:14 AM
    Identiying Wires on for Furnace on Thermostat
    I have a Honeywell Thermosat, model RTH6300B, and I want to know which wires that I connect to the termostat are the wires for the furnace. In short, if I disconnect the thermostat to test the furnace by starting it directly, which ones are the furnace wires that I should connect. I also have central air conditioning. The wires that I have coming out of the wall are Green White, Yellow, and Red. The Red terminal on the thermostat has a metal jumper clip on it.

    Thanks for your help.

    J. Grady
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
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    #2

    Feb 15, 2007, 10:37 AM
    The red wire is hot from the transformer. Connect it to the white, and the heat should come on and stay on. There is a wealth of material on trouble shooting a heating system in the sticky at the top of the heating forum. Just click on the Heating link at the top of the page and then the sticky.
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