If you recently cleaned the unit and it won't turn on, water may have entered the internal components.
Did water get in the Mist Tube?
The vertical tube inside the tank leads to the motor. If water was poured down this tube during cleaning, the unit may be damaged.Did you submerge the base?
The base must never be submerged.Solution
Unplug the unit immediately and let it dry for at least 24 hours before attempting to turn it on again.