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    jerwin's Avatar
    jerwin Posts: 3, Reputation: 0
    New Member
    		  
    #1

    Apr 13, 2007, 07:26 PM
    Goodman o903b air conditioning
    Why does my ac compressor come on when I turn on my switch for ventilation fan,fan on thermostat is set for auto and is in heat mode, could I have wired my ac wrong? Never had this happen before,even though the ac is only 1 year old
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
    Ultra Member
    		  
    #2

    Apr 13, 2007, 08:09 PM
    Yes I would say its wired wrong. Give more info- Type of system, if you changed the t-stat what wires did you use?
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
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    #3

    Apr 13, 2007, 08:29 PM
    The sticky at the top of the forum has a complete description of how to wire a thermostat.
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