These are typical symptoms of an improperly selected nozzle. Liquid temperature at the expansion valve not only affects nozzle selection but also affects the TEV selection since colder liquid has more capacity. Typically nozzles and expansion valves are selected based on the BTU capacity of the condensing unit divided by the number of evaporators, 95°F. ambient and 105°F. condensing with a 90°F to 95°F. degree liquid temperature. If the liquid temperature or the design condition change the selection may not be correct for the application. Consult an Application Engineer.