Preformed QC on upstairs unit install. Adjusted airflow from 250 cfm to 350 cfm. Tested refrigerant pressure all pressure were reading at acceptable levels. Temperature splits were good at 18-20 degrees. Customer knows how to operate Trane thermostat and app. Unit was properly leveled and all wire connects were tight. Breakers were properly sized, tested and checked drain line float switch. unit in good working order upon departure. GENERIC CONTACTOR * 2 POLE 35 - 40 AMP 24V CONTACTORS ARE SWITCHES THAT USE HIGH VOLTAGE TO HELP COMPONENTS IN YOUR UNIT. SINCE THEY ARE IN CONSTANT USE, THEY DO NEED TO BE REPLACED OCCASIONALLY.
