Philips HU4901 User Manual page 18

Problem
There is unpleasant smell
coming out from the
humidifier.
No air comes out of the air
outlet.
I do not see visible mist
coming out of the humidifier.
Is it working?
18 EN
Possible solution
• Make sure that the water tank is filled with water.
•
Clean the humidification filter (see chapter 'Cleaning the
humidification filter').
Put the plug of the humidifier into the wall socket and switch on the
humidifier.
When mist is very fine, it is invisible. This humidifier has a NanoCloud
humidification technology, which produces healthy humid air from the
outlet area without formation of water mist.Therefore, you cannot see
the mist.