Customer has 5 y/o Rheem system that operates for upper level. Furnace located in attic. System was not cooling due to water in pan tripping water protection. Removed water from pan. Found that drain line travels into crawlspace and is connected to main level system drain line. Drain oune was also warped. Repair and cleaned drain line. Pressure levels were normal. Condenser electrical components are good. Recommend duct cleaning. Water protection should be upgraded. Recommend iWave for air purification and dust reduction. Informed customer of all findings. System is currently working.