Performed cooling maintenance on a Trane system Aprilaire 216 filter is still good Shut down humidifier Blower is clean Drain is clear Visual inspection of furnace for any water leaks that may have developed since the fall checkup Put air diagnostic probes in the return and supply ducts Connected refrigerant diagnostic probes to outdoor unit Specification calls for 8⁰ of liquid line subcooling, actual measurement was 0⁰ Discussed options for leak search Decided to go with top off and dye System took 1lb of R410a Now running 8⁰ subcool Capacitor tested 38.5 under load with the Compressor running, this is in specification tolerance Condenser coil is clean Fan blade has no signs of damage or imbalance Wiring is tight and no signs of damage or overheating
