Danger!! Do not attempt this repair.
Please call a certified electrician!
During 100-deg weather, the A/C compressor and fan in the unit would stop working. When the circuit breaker was checked, it wasn’t “tripped.” Re-setting the circuit breaker would allow the A/C to work again for a few days until it happened again. This told me the internals of the circuit breaker were faulty.
Please do not attempt this repair, it is for information use only!