The unit was iced over. I shut the compressor down and let the outdoor fan run. I checked the indoor coil and found the insulation for the cabinet had fallen onto the coil restricting the airflow. I spoke with the homeowner about the air filters and she showed me the ones she changed out and they were excessively dirty. These conditions will cause a coil to freeze over. I defrosted the unit and glued the insulation back onto the cabinet Temperature split readings and gauge are good. I found the service valves leaking. I replaced both service valves and added Freon caps. The unit is operating properly at this time.