The Vornado ngt335 Tower Circulator brings V – Flow air circulating technology to the next level with Versa – Flow adjustable airflow. Versa – Flow allows you to create a wide span of airflow, a direct line of airflow and everything in between. The Constant airflow eliminates the need for oscillation because of the high volume of air is continuously moving throughout the room – Creating quiet, comfortable, whole room circulation. The ngt335 has five speeds, touch sensitive controls, energy – saving 1 – 8 hour auto off timer, easy – to – clean air inlet grill, remote control and 5 – Year by Satsifaction Guarantee Vornado. Trouble shooting steps: – The slightly disengaged inlet grill can be re – assembled by the consumer. - Unit Set to a low speed setting. Adjust to a higher speed setting. - Airflow is blocked. Remove obstruction. - The battery is dead. Replace with new 3 Volt CR2032 battery. (Refer to the remote control. ) – Refer pdf for more information.