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    Hanknub1's Avatar
    Hanknub1 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Aug 12, 2008, 12:13 PM
    Outside Unit Will Not Come On
    The Ac Unit On The Outside Will Not Come On At All. I Know It Is Getting Power Because The Switch On The Outside Unit Closes But Nothing Comes When I Turn It On At The Thermostate Please Help If You Can,hanknub1
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Aug 12, 2008, 12:33 PM
    Check the inside breaker for both the inside and outside unit.

    Check the disconnect outside for a tripped beaker or blown fuses.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #3

    Aug 13, 2008, 07:56 AM
    The switch on the outside(contacter I suppose) is controlled by low voltage (24V) which is sent from the tstat,which gets its power from the transformer in your furnace.you still need 230V of power to run the condenser(outside a/c unit),which is fed power from you main breaker box with a disconnect in between which both should be checked to insure that they are turned on.
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