6507 Circle S Rd Austin, TX 78745 United States
Completed commercial rooftop HVAC repair on a Rheem RKNL-A060JK10E rooftop unit after the customer reported the air conditioning system was not cooling properly. Upon arrival, the rooftop unit was powered on; however, the compressor was not operating. A detailed electrical inspection found the compressor run capacitor terminal connection had burned off, preventing the compressor from starting. The damaged terminal connection was repaired and securely reconnected, restoring normal compressor operation.
After startup, system performance testing revealed an elevated discharge pressure of approximately 480 PSI, indicating poor condenser heat rejection. The condenser fan motor run capacitor was tested and found to be outside the manufacturer’s acceptable tolerance, reducing condenser fan performance. Replaced the failed condenser fan motor run capacitor and thoroughly cleaned the condenser coil to restore proper airflow and improve system efficiency.
Following the repairs, the rooftop unit was restarted and monitored through normal operation. Final operating pressures stabilized at approximately 130 PSI suction and 430 PSI discharge, confirming improved refrigeration performance. Verified proper compressor operation, condenser fan operation, and overall cooling performance before leaving the site.
At the time of departure, the Rheem rooftop unit was operating normally with proper airflow, stable refrigerant pressures, and reliable compressor operation. Routine commercial HVAC preventive maintenance, including condenser coil cleaning and capacitor testing, is recommended to improve energy efficiency, reduce compressor stress, and help prevent unexpected rooftop unit failures in commercial buildings.
