No cool on the 5 ton unit On the east side of the home. Found TXV blocking the refrigerant flow. Made adjustments with the refrigerant. Added 2 pounds of our 410 a. Went upstairs and move the sensing bulb from the inside of the evaporator coil to the outside. System is cooling at this time. Head pressure is around 410 psi.New expansion valve will be needed. M#4TXCD010DS3HCAA S# 16394L56CG