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Hello, your AC is most likely not broken, it is most likely just hovering between control points. Lets give it a few hours and see how it goes.
That said however, AC systems are not designed to run and dehumidify well at 83F... that is outside of their range of capabilities in most cases, the system must be in cooling mode to some degree in order to dehumidify.
Experiment with it for a while, let me know how it goes.