CAME OUT ON A SERVICE CALL, NO AC. CHECK THERMOSTAT, AIR FILTER, AIRFLOW, AND ELECTRICAL CONNECTIONS. INSTALLED 3TON AC/FURN/COIL. EVERYTHING WAS INSTALLED PROPERLY AND WORK AREA WAS CLEAN WHEN FINISH. CHECK DRAINAGE, FREON, VOLTAGE AND AMPERAGE ON MOTORS, AND BLOWER COMPONENTS. CHECK BURNER OPERATION, HEAT EXCHANGER, HIGH LIMIT CONTROL, AND FAN CONTROL. EVERYTHING IS RUNING GOOD.