What brand AC and what brand thermostat, we have carrier AC and Carrier thermostat and have never seen the condition you describe.
Does the AC come back on after a little while? Have you changed air filters? Is this a new error? How old is the AC unit? There may be a thermal overload on the motor which may automatically reset, but without additional information it will be hard to provide any additional info.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
Last edited by villagetinker; 08-07-2023 at 02:00 PM.
Reason: wrong thermostat was stated
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