Capt. JG wrote:

So, I'm left with a couple of possibilities... either someone has been
deliberately turning off the A/C (not necessarily maliciously) or something
in the box is tripping the switch. Am I missing something? Could it be
something else?


If the breaker trips, it should do so in a fashion that indicates a
trip,, i.e. the handle is only 3/4 or 1/2 way over, you have to move it
to "off" before closing it. If it's tripped manually than it will be at
the "off" position.

Cheers
Martin