Upon arrival customer mentioned that he doesn’t think top floor ac unit is working and wanted verification if bottom floor unit was working properly. During diagnostics I called for ac for top floor system. Found indoor unit running but outdoor unit now. System tripped on pressure fault. Reset fault and put on gauges to find No Superheat and No Subcooling. Opened up AHU panels and adjusted TXV but I’m not seeing any difference in refrigerant pressures. TXV needs to be replaced. Then went to main floor system and called for ac. Put gauges on system and checked operation. Found normal Superheat, normal subcool, and normal delta air temps. Unit seems to be operating normally. Need to return to replace top floor txv. Part order form has been uploaded. Office please follow up with customer on return to replace txv.