Thermostat satisfied at 71 degrees on arrival. Air filter was dirty. Replaced with customer provided filter. CoreSense diagnostics flashing yellow indicator twice indicating compressor tripping. Bypassed CoreSense and error code went away. Subcooling and superheat adequate. Supply and return difference adequate. Customer aware that temp won’t get to 68 degrees. Offered estimate to add more insulation to attic and ductwork. She has to run by homeowner