Performed Freon repair on a Carrier air conditioner. Diagnosed low refrigerant levels using a manifold gauge set and detected a leak in the evaporator coil with an electronic leak detector. Repaired the leak using a silver solder kit. Pulled a vacuum on the system with a Robinair VacuMaster to remove moisture and air. Recharged the system with R-410A refrigerant to the manufacturer's specifications. Conducted a final test to ensure optimal cooling performance and system efficiency.