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Another possibility could be:
A low gas condition resulted in the evaporator coil icing up, which blocked the airflow and meant the waste heat from the air-circulation fan got dumped into the house all day.
If this was the case, turning off the system for a hour or so could allow the ice to melt and air flow through the coil to resume, resulting in a cooling system that works again...until the next hot humid day.
Just a guess.
Good luck
Les
__________________
Best
Les
My train of thought has been replaced by a bumper car.
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