On arrival system was running and cooling producing an 18 degree delta. Indoor unit had a clean blower and coil and clear drain lines. The value germicidal uv systems bulb was not on on arrival but once i turned the machine on and off it turned on. The outdoor unit passed all electrical testing. I recommended upgrading his uv system to an iaq 200 due to the bulbs lifespan and its increased effectiveness against biological growth, viruses and bacteria. When I left the system was running and cooling.