Tech found that the refrigerant levels look to be off at this time with a sc or 2.8 and sh of 19. Tech did a leak search and didn't find anything at this time tech would like to keep an eye on it. Tech found that the UV light is on but the efficiency has gone down due to time tech recommends replacement lamp Tech poured a gallon of water in the system and the flow was up to standards at this time all electrical connections are tight and have no corrosion at this time.