If the humidity value on the top of the Xiaomi Smart Evaporative Humidifier remains unchanged, you can blow air into the back of the humidifier. If the value changes, it means there is no problem with the device. If the value remains unchanged, it means the device is faulty.
Note:
The Xiaomi Smart Evaporative Humidifier has a built-in fan stop protection function. When the humidifier detects that an object is placed on the top cover, it will automatically stop the fan. When the object is removed, the humidifier will resume its previous function.