As I arrived, the homeowner greeted me at the front door. She told me that she recently had issues with the thing, not shutting off and overcooling and in the past, she also had the thermostat going blank from a drain line. I’ve tested all voltage and connections and components of the air handler and the condenser the capacitor is fine. The pressure readings to the outside condenser are normal. This is a 10-year-old system, the amperage on the fan motor is slightly high to age and the indoor air handler has a lot of biological growth I tested the Thermostat turning it on and off and making sure it shut off completely. The fan does run for one minute after shut off I can’t adjust. I do highly recommend replacement of the system The insulation value in the attic is not high enough so the system runs a lot more than need to. I highly recommend r38 insulation value no UV light installed As I was about to leave homeowners son and another room started feeling heat. I w