During my inspection today, I found that the system was pumping down in the AC mode on the low side of the refrigerant cycle. I turned the system to the heating mode. System was operating properly. This led me to believe that the indoor TXV was not operational. I checked several different ways and they all came to the conclusion that, the TXV was bad. I have given the customer the option to replace the TXV. Ihave informed them that we have to get this part replaced first before I can further diagnose the system. Customer went with the option to replace the TXV. I ordered it from the manufacturer. Office needs to reschedule. (April 25, 2024) Came back today and installed new #Warranty TXV and bi flow filter dryer. I made sure that the system had a 400 PSI pressure test and then a less than 500 µm vacuum which both held for 10 minutes each. After completing this charged the system with 9 lbs. 6 oz. of refrigerant per manufacturer nameplate. I tested the system. Everything is operation