Using The Humidi Er; Understand The Humidity; Indicator Light; Understand The Healthy Air Protect Alert - Philips HU4902 User Manual

4 Using the
humidifier

Understand the humidity

indicator light

The humidi er is equipped with a built-
in humidity sensor. The current humidity
level is shown on the display (40, 50 or
60 percent).
Note
•
The accuracy of the humidity indication is
approximately plus or minus 5%.
•
It takes some time to measure the humidity
level in the room..
Color of the humidity
indicator light
Blue
Red
The humidity indicator light
automatically goes on when the
humidi er is switched on.
Note
•
The built-in humidity sensor measures the
humidity level and automatically selects the
appropriate color of the humidity sensor light.
When the desired humidity level is reached,
the color of the humidity sensor light is in blue.
When the humidity level is not reached, the
color of the humidity sensor light becomes red.
Humidity level
target achieved
below target
Understand the healthy
air protect alert
The healthy air protect alert gives you
a timely warning when the water tank
needs re lling. When the water in the
tank starts getting low, a red indicator
on the control panel starts blinking to
tell you that it is time to re ll the tank.
Understand the healthy
air protect lock
The healthy air protect lock always
ensures that your humidi er does not
work without water in the tank. When
the water tank is empty and needs
to be re lled, the healthy air protect
lock shuts o the humidi er and a red
indicator lights up. When you re ll the
water tank properly, the humidi er is
turned on again.
Switch the humidi er on
and o
1
Put the plug in the wall socket.
EN 9