The answer to 'mini split not cooling' is that there are several common causes, including low refrigerant levels, a malfunctioning compressor, blocked airflow, or a problem with the thermostat or control system. Symptoms can include the unit running continuously without cooling, warm air blowing, or the indoor unit icing up.
In many cases, the issue can be resolved by a DIY troubleshooting and maintenance check. However, if the problem persists or you're unsure of the cause, it's best to call in a professional HVAC technician. They can properly diagnose the issue and make any necessary repairs or replacements to get your mini split system cooling effectively again.