A humming unit that does not cool may have a failed capacitor, stuck motor, or compressor problem

https://floridaacservice670.brightsora.com/posts/what-to-do-when-your-ac-stops-working-during-a-florida-heat-wave

A humming unit that does not cool may have a failed capacitor, stuck motor, or compressor problem. Turn it off quickly to prevent damage and request repair.