working the way you want. Another more advanced approach is to hook up a rechargeable battery in between the power supply and the Pi to act as a buffer in case of sudden power loss, and configure the Pi to shut down gracefully when mains power goes out, but that's a more advanced ...
So by following the manufactures instructions you will likely run the power and signal wires together with the copper tubing from the indoor unit to the outdoor unit and then follow the wiring diagram to hook it up. Adding a mini split air conditioner to you home. Often times we get get ...