The answer to 'my mini split keeps shutting off' is that there are several common causes, including low refrigerant levels, a malfunctioning compressor, or issues with the thermostat or control board. Symptoms may include the unit cycling on and off frequently, poor cooling performance, or the compressor not starting at all.
Some potential solutions include checking the refrigerant level, cleaning the air filters, and ensuring the outdoor unit is free of debris. However, many mini split issues require professional diagnosis and repair, so it's best to call an HVAC technician if the problem persists or you're not comfortable troubleshooting it yourself.