Performed preventative maintenance for a Trane AC system. Serial #21446KJ45F model #4TTR6030J1000AB. Upon arrival the system was calling for heat. I ended the call for heat and let the system rest while I inspected the internal components. The evaporator coil is clean and in good condition. Tested the drain pan, drain line and condensate pump with several bottles of water to ensure that there are no leaks or clogs. I inspected all electrical connections to ensure that they are secure and in good condition. The 16x25x4 air filter gets changed by the homeowner. I re attached the access panels and called for ac. The condenser amp draws are .48 for the fan and 4.13 for the compressor and the is a 20° temperature split for the system. The system is operating properly at this time. No charge FWI