Arrived on site and changed out the filter drier on this system. I pumped down the refrigerant into the condenser so none had to be added. I ran nitrogen through the line sets to blow out any plug or restriction before pressure testing and evacuating the system. The customers thermostat had failed so we changed that out as well while there. I tested operation of the system in cooling mode we have a 7.5 degree sub coil with an 18.5 degree Temperature split. This system is operating correctly repairs are now complete.