What to do when the diffuser flashes and turns off by itself?

1. Unplug ZOE.
2. Empty the tank and rinse it with hot water.
3. Plug ZOE back in.
4. First press and hold the LED button, then press the ON/OFF button at the same time.
5. Hold both buttons for about 2-3 seconds.
6. The LED should flash several times.
7. Fill the water tank and turn ZOE back on.