The answer to 'my mini split keeps shutting off' is that there are several common causes, including low refrigerant levels, a dirty air filter, a faulty thermostat, or an issue with the compressor. Symptoms may include the unit cycling on and off frequently, poor cooling performance, or the unit not turning on at all.
Some potential solutions include checking and replacing the air filter, inspecting for refrigerant leaks, and testing the thermostat. However, many of these issues require the expertise of a professional HVAC technician, especially if the problem is with the compressor or refrigerant system. It's generally best to call a qualified technician to diagnose and repair the issue to avoid further damage to the unit.