The answer to 'my ductless system keeps shutting off' is that there are several common causes, including a clogged air filter, low refrigerant levels, a malfunctioning thermostat, or a problem with the compressor or other internal components. Symptoms may include the system running intermittently, poor airflow, or unusual noises.
In many cases, simple DIY troubleshooting and maintenance like cleaning the air filter or checking the thermostat settings can resolve the issue. However, if the problem persists or you suspect a more serious issue, it's best to call in a professional HVAC technician to diagnose and repair the system. Attempting complex repairs on your own can be dangerous and may void the manufacturer's warranty.