Philips HU4813 - Troubleshooting Common Issues; Filter Discoloration, Odors, and Airflow; Invisible Mist and Sensor Testing

12
EN
Problem Possible solution
The lter turns
yellowish after some
time.
The yellow deposits is a natural eect of the wick material,
and it has no impact on humidication performance. Clean
the humidication lter frequently to remove the scale, and
replace the humidication lter every three month.
There is unpleasant
smell coming out from
the humidier.
• Make sure that the water tank is lled with water.
• Clean the humidication lter (see the chapter ‘Clean the
humidication lter’).
No air comes out of
the air outlet.
Put the plug of the humidier into the wall socket and switch
on the humidier.
I do not see visible
mist coming out of
the humidier. Is it
working?
When mist is very ne, it is invisible. This humidier has a
NanoCloud humidication technology, which produces
healthy humid air from the outlet area without formation of
water mist. Therefore, you cannot see the mist.
I want to check
whether the humidity
sensor works or not.
Gently blow moist air into the humidity sensor. After a while,
the humidity indication changes. The indication can show the
ambient humidity level from 20%RH to 95%RH.