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What's wrong when your central AC goes on when the thermostat is off?

I'm not sure if it's wires , thermostat or AC.
I don't want to by a new AC and have the same problem. It goes on and off by itself. I turned off the switch in the fuse box.


try a new thermostat. it is is broken the mercury level could trigger the sernsors and make the ac go on.

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