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    sls1213's Avatar
    sls1213 Posts: 1, Reputation: 1
    New Member
     
    #1

    May 15, 2009, 03:30 PM
    A/C won't shut off
    I have a coleman presidential II unit. My heater works fine but my A/C will not shut off. We have to work it manually. It doesn't matter where I set the thermostat it just keeps running. :confused:
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
     
    #2

    May 15, 2009, 03:35 PM

    First try disconnecting the thermostat wires from the thremostat. If ac still runs, disconnect thermostat wires from furnace control board. If ac still runs, You most likely have a stuck contactor on the outside unit. Let is know how the first two test go. ( kill power to furnace before disconnecting wires)

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