2017 Trane XR 14 seer 3 ton r410a Puron Cooling system preventive maintenance tune up, cleaning, safety inspection, filter rotation. Flush AC coil drain and inspect A coil. Install homeowner supplied 16x25x4 pleated air filter, run test thermostat in cooling mode at 48° supply temperature Water flush condenser coil, clean and inspect electronics compartment, run test cooling mode, balance refrigerant charge from 5.4 subcooling to 11.6. re-level condenser pad Reset thermostat to homeowners original temperature settings on fan auto mode