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English
Problem
Possible solution
No air comes out of the air
outlet.
Put the plug of the humidifier into the wall socket and switch on
the humidifier.
I do not see visible mist coming
out of the humidifier. Is it
working?
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.
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. Note that for
HU4802
, if the initial
humidity indication is already
60
percent, the humidity indication
light stays blue when you blow moist air towards the sensor; for
HU4803
, the indication can show the actual humidity level from
20%RH to 95%RH.