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    stacie285's Avatar
    stacie285 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 25, 2007, 06:09 PM
    Changing out old thermostat to programing
    Changing out old thermostat to programing... now the a/c will not work
    Where might the reset button be on a carrier unit?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 25, 2007, 11:59 PM
    I doupt if it is a outdoor reset problem. I would check the low voltage wiring for a error in instillation. If necessary trace the wires from the thermostat back to the furnace and make sure the color code is correct.
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member
    		  
    #3

    Oct 26, 2007, 05:57 AM
    Did you jumper the red wire to both RC & RH? Another thing is to connect the red wire to the green and yellow. If the A/C comes on, the problem is in the thermostat. If not, the wiring or system.
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