Turning On And Off - Philips AC4550 User Manual

Gas level
L1
L2
L3
L4
IAI
The professional-grade AeraSense
sensor detects the level of indoor
air allergen and with numerical
feedback from 1 to 12 the potential
risk level of indoor air allergens can
be displayed. 1 indicates best air
quality.
IAI level
1-3
4-6
7-9
10-12

Turning on and off

Note
• Always place the air purifier on
a stable, horizontal, and level
surface with the front of the
unit facing away from walls or
furniture.
• For optimum purification
performance, close doors and
windows.
• Keep curtains away from the air
inlet or air outlet.
• Do not block the inlet or air
outlet with clothing.
Air quality light
color
Blue
Blue-purple
Purple-red
Red
Air quality light
color
Blue
Blue-purple
Purple-red
Red
1
Put the plug of the air purifier in
the wall outlet.
» The air purifier beeps.
» All lights go on once and
then go out again.
2
Touch the button to switch on
the appliance.
» The air purifier operates
under the general mode by
default.
» When the air purifier is
warming up, "
on the screen.
» After 30 seconds, the air
purifier shows the highest
level among PM2.5/Gas/
IAI on the screen. The air
quality sensor automatically
selects the appropriate air
quality light color.
" displays
EN
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