Low refrigerant level
A restriction in the high side
Replace the line that incorporates the orifice tube.
Disconnect the liquid line from the evaporator inlet line and pull the orifice tube straight out with an extractor tool.
Disconnect the liquid line from the evaporator inlet line and, using a twisting motion to break free of the line, pull out the orifice tube with an extractor tool.
Cut out the section of line containing the orifice tube and, using a kit, install a new orifice tube line segment.