Upon arrival found system leaking water into return. Found main drain clogged and secondary drain detached from unit causing system to not drain properly. Checked outdoor unit and found system slightly low on Freon. Found evaporator coil rusted pretty bad. Recommended replacement of system. Homeowner wanted to move forward with repairs. Added 2lbs of R-22 to system and cleared and repaired drain line. System is now functioning properly at this time.