Side deflectors are located on each side of the control panel. To change the direction of the airflow, turn the control lever located in the middle of the side vent to the right, left and up or down. They have a wheel for adjusting the strength of the air flow passing through the side deflectors. The side vents are open when the wheel is in the position. The side vents are closed when the wheel is in the position. Make sure that the deflectors are free from foreign objects.