My humidifier is not using any water. How can I tell that my humidifier is working?

Your Sleep Report provides you with an indication (smiliey face) if your humidifier is working properly. The humidifier uses current technology similar to that of your home heating system. It only turns on when needed to reach the desired settings. Icons are displayed on the screen to indicate when the humidifier is heating up or cooling down. See your user guide for images of the icons.