Performed 1st tune up on system. Tested safety switches. Sprayed coils and added algicide tablets. Air flow is good. Uv light is on. Installed in 2020. Gave information about uv light and client is not interested in replacing bulb until it goes out. Pan has a lot of rust from past. Refrigerant levels are good. Capacitor is good. Sprayed outdoor coils .wiring clean and tight.