Test of AC system finds outdoor unit coil dirty. Chemically cleaned coil and hosed off with garden hose. Indoor coil txv type with no ice on it. Slight drip of water into overflow pan from rusting out interior coil pan. AC unit running a 2.4° subcool with 74° return freon to inside of house. Added 3.25 lbs R22 freon with leak seal. Tested, unit now running with normal ranges. All okay at this time. Checking on Wifi thermostat for homeowner and Solar Fans.