Upon arrival inspected unit and found 2nd floor system low 2.88lbs r410 a. End pressures 325-8°/128-20° 2nd floor. Threw guages on first floor due to shut down noise complaint, basement unit charge at 329-8°/123-10° no concerns on system compressor just oil loggs during shutdown and you can hear the compression. Performed leak search for 2nd floor system due to charge being sufficiently low and found no leaks on system. Delta T for 2nd floor at 23° airflow at 825cfm per homeowner request on noise complaints from higher speeds. All systems operational at this time.
