Here's what all the readouts are:1-67, 2-58, 3-78, 4-78, 5-73, 6-200, 7-04, 8-78, 9-27, 10-1.5, 11-2.3, 12-43, 20-3.2, 21-42, 22-00, 23-32, 24-13.5, 40-164, 41-85, 42-72, 43-136

Does this mean anything to you? I know that the system has been recently charged with refrigerant so it shouldn't be low.