Performed repair on a Ruud UANL rooftop unit. Diagnosed the issue as a low R-410A refrigerant charge. Inspected the system for leaks and identified a minor leak in the evaporator coil. Repaired the leak and pressure-tested the system to ensure it was sealed properly. Recharged the unit with R-410A refrigerant to the manufacturer's specified levels. Cleaned the condenser coils to improve heat transfer efficiency. Checked system pressures and adjusted for optimal superheat and subcooling values. Verified all electrical connections and tested the thermostat for accurate control. Ensured the unit operates efficiently, providing reliable cooling for the building.
