The A/C external units (both fan and compressor) do not start sometimes. When I turn on A/C for cold air, then the only main unit starts and blows warm air.
The only way that works is that I turn off the entire A/C, turn off the breaker, and then start everything again. Then, the external units start and it blows cold air. I have to do this like every two months. What would be the potential issues?