DESC: The automatic flush system will drain the humidifier every 12 hours of operation. This is a preventative maintenance mode to help insure maximum humidifier efficiency. The humidifier will completely empty itself and not refill until another call for humidity. The mode insures that all summer long, when the humidifier is not in operation the humidifier will not be full of water. The LED read-out display on the front cover shows the proper operation of the humidifier. The display also shows the installer and homeowner the effectiveness and reliability of this humidifier. This humidifier also is the only unit that will operate in the heating system without a need for a heat call. The steam humidifier will operate and turn the fan on independently of the furnace.