We arrived at our clients home for the main unit not cooling properly. The homeowner showed us the thermostat and said that the unit would run continuously without dropping the temperature in the home. We spoke with Will over the phone and he informed us that the indoor air handler had been replaced last year with some additional duct work done in the entire home. We first proceeded into the attic and verified the unit was on and calling to cool. We then went outside and tested all the electrical components on the 2009 heat pump. It has had multiple parts replaced already. Everything is currently testing within manufacture specification's with the exception of the defrost control board. It has a significant burn mark from overheating on it. When we read the refrigerant pressure we immediately found the unit to be nearly empty of Freon. We proceeded back inside and preformed a courtesy leak search in the air handler. We found the leak in the middle of the evaporator coil. I attempted t