Performed maintenance in cooling on the Bosh php. I Checked coils, electrical, capacitors, controls, safeties, airflow, temperature split, refrigerant pressures, motors and bearings, compressor and amperages, flushed condensate drain line with water. System is operating normally and readings are within manufacture specifications at this time. I recommend a TCC maintenance plan at this time, customer said he will think about it and call us back. Thank you for your continued confidence.