Why does the Guardian mist inhaler fan still run after shut off?

Each time the inhaler is turned off the fan will run for 10 minutes to dry internal parts of the device. It will automatically stop when complete. Once it is complete you can remove the cap to the reservoir and empty the remaining water. The drying cycle is important to keep the internal parts of your device clean.

IMPORTANT: Do not interrupt, refill reservoir, unplug or turn off the device when the fan is running the drying cycle*