I conducted a thorough inspection of the mini split system, identifying issues with the indoor unit's refrigerant levels and a malfunctioning compressor. After safely draining and refilling the refrigerant, I replaced the faulty compressor and ensured all connections were secure. I tested the system to confirm proper operation and balanced airflow across all vents. Additionally, I cleaned the indoor and outdoor units, replacing air filters to enhance efficiency. The system now operates quietly and efficiently, providing optimal cooling and heating.