Arrived onsite at a commercial property in Pasadena, California, to provide a second opinion assessment of Trane split system. The unit had been diagnosed with a bad compressor. Upon arrival our technician inspected the AC and confirmed that the compressor was indeed faulty, and would also need two driers. Found that the condenser fan motor was bad and had been running backwards. Condenser coil needs to be washed. Will quote necessary repairs.