Performed maintenance on system. Cleaned condensing coil, cleared drain line, took temp reading on supply and return air, checked static pressure on duct system, checked electrical components, checked kw out put of motors and compressor, checked charge on system, ran system through cooling cycle. Found condensate vent block, and blower never setup. Adjusted blower speed and removed tape blocking drain vent. Found down spout under sink blocking tee for condensate drain. Ductwork is undersized and making blower work harder to get job done. Txv is failing. Tcv is starting to shut down causing high superheat. Secondary drain pan is quite rusted. Quoted customer repairs. Homeowners will look over quotes and get ahold of us when ready to move forward. System is cooling but not at a 100% at this time.