Philips AC4374 User manual

AC4372, AC4374
EN User Manual 3 ZH-TW 使用手冊 25

3
EN
English
Contents
1 Important 4
Safety 4
2 Your air purier 7
Overview (for AC4372) 7
Overview (for AC4374) 8
3 Get started 9
Install lters 9
4 Use the air purier 11
Understand the air quality light 11
Switch on 11
Set the sensitivity of the air
quality sensor 12
Select the fan speed 13
Set the timer 13
Activate child lock 13
Night mode 14
5 Clean your air purier 14
Clean the air purier 14
Clean the air quality sensor 15
6 Clean the pre-lter 16
7 Replace the lters 17
Reset lter lock 20
8 Troubleshooting 21
9 Guarantee and service 23
Order parts or accessories 23
10 Notices 23
Electromagnetic elds (EMF) 23
Recycling 24

4
EN
1 Important
Safety
Read this user manual carefully before
you use the appliance, and save it for
future reference.
Danger
• Do not let water or any
other liquid or ammable
detergent enter the
appliance to avoid electric
shock and/or a re hazard.
• Do not clean the appliance
with water, any other liquid,
or a (ammable) detergent
to avoid electric shock
and/or a re hazard.
Warning
• Check if the voltage
indicated on the bottom
or indicated at the rear of
the appliance corresponds
to the local power voltage
before you connect the
appliance.
• If the power cord is
damaged, you must have
it replaced by Philips, a
service center authorized
by Philips, or similarly
qualied persons in order
to avoid a hazard.
• Do not use the appliance
if the plug, the power cord,
or the appliance itself is
damaged.
• This appliance can be
used by children aged
from 8 years and above
and persons with reduced
physical, sensory or
mental capabilities or
lack of experiences and
knowledge if they have
been given supervision or
instruction concerning use
of the appliance in a safe
way and understand the
hazards involved. Children
shall not play with the
appliance. Cleaning and
user maintenance shall
not be made by children
without supervision.
• Do not block the air inlet
and outlet, e.g. by placing
items on the air outlet or in
front of the air inlet.

5
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English
Caution
• This appliance is not
a substitute for proper
ventilation, regular vacuum
cleaning, or use of an
extractor hood or fan while
cooking.
• If the power socket used to
power the appliance has
poor connections, the plug
of the appliance becomes
hot. Make sure that you
plug the appliance into a
properly connected power
socket.
• Always place and use
the appliance on a dry,
stable, level, and horizontal
surface.
• Leave at least 20cm free
space behind and on both
sides of the appliance and
leave at least 30cm free
space above the appliance.
• Do not place anything on
top of the appliance and
do not sit on the appliance.
• Do not place the
appliance directly below
an air conditioner to
prevent condensation
from dripping onto the
appliance.
• Make sure all lters
are properly installed
before you switch on the
appliance.
• Only use the original
Philips lters specially
intended for this appliance.
Do not use any other lters.
• Avoid knocking against the
appliance (the air inlet and
outlet in particular) with
hard objects.
• Do not insert your ngers
or objects into the air
outlet.
• Do not use this appliance
when you have used
indoor smoke-type insect
repellents or in places
with oily residues, burning
incense, or chemical
fumes.
• Do not use the appliance
near gas appliances,
heating devices or
replaces.
• Always unplug the
appliance after use and
before you clean it.

6
EN
• Do not use the appliance
in a room with major
temperature changes,
as this may cause
condensation inside the
appliance.
• To prevent interference,
place the appliance
at least 2m away from
electrical appliances that
use airborne radio waves
such as TVs, radios, and
radio-controlled clocks.
• The appliance is only
intended for household
use under normal
operating conditions.
• Do not use the appliance
in wet surroundings or in
surroundings with high
ambient temperatures,
such as the bathroom,
toilet, or kitchen.
• The appliance does not
remove carbon monoxide
(CO) or radon (Rn). It
cannot be used a a safety
device in case of accidents
with combustion processes
and hazardous chemicals.

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English
2 Your air purifier
Congratulations on your purchase, and welcome to Philips!
To fully benet from the support that Philips oers, register your product at
www.Philips.com/welcome.
Philips VitaShield IPS technology and NanoCloud technology ensures you “Healthy air
a l way s ”.
VitaShield IPS technology eectively removes pollutants (ultrane particles, allergens,
bacteria and viruses) with size >0.02 micron including bacteria and virus*.
*According to 2008 Microbiological Risk Assessment Report of the World Health
Organization (WHO), the avian inuenza, human inuenza viruses, Legionella,
Hepatitus viruses and SARS coronavirus are larger than 0.02 micron.
Read this user manual carefully before you install and use the unit. Save it for future
reference.
Overview (for AC4372)
a
b
c
d
e
Touchscreen control panel
Light sensor
Air quality light
Air quality sensor
Filter 4: HEPA lter AC4154
f
g
h
i
Filter 3: Activated carbon lter
AC4153
Filter 2: Multi-care lter AC4151
Filter 1: Pre-lter
Front panel
d
b
c
e f g h i
a

8
EN
Overview (for AC4374)
a
b
c
d
Touchscreen control panel
Light sensor
Air quality light
Air quality sensor
e
f
g
Filter 2: Integrated Multi-care lter
AC4138
Filter 1: Pre-lter
Front panel
d
b
c
e f g
a

9
EN
English
3 Get started
Install lters
The appliance comes with all lters
tted inside, but you have to remove the
packaging of the lters before you can
use the appliance. Remove all lters,
unpack them, and place them back into
the appliance as described below.
Note
• Insert the lters in the correct position.
1 Place your ngers in the recesses of
the side panels and gently pull the
top part of the front panel towards
you.
2 Lift the hooks at the bottom of
the panel out of the bottom of the
appliance.
3 To remove the pre-lter, grab the
two projections and pull the lter
towards you.
4 Remove all the lters from the
appliance.
5 Remove all packaging material from
the lters.
6 For AC4372, put the HEPA lter,
activated carbon lter and multi-
care lter back into the purier.

10
EN
For AC4374, put the integrated Multi-
care lter back into the purier.
Note
• Make sure that the side with the tag is pointing
towards you.
7 Place the pre-ler in the appliance.
2
1
Note
• Make sure that the side with the two
projections is pointing towards you, and
that all hooks are properly attached to the
appliance.
8 To reattach the front panel, insert
the bottom hooks into the bottom
of the appliance rst (1). Then, push
the panel against the body of the
appliance (2).

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English
4 Use the air
purifier
Understand the air
quality light
Color of the air quality
light
Air quality
level
Blue Very good
Dark purple Good
Purple Fair
Red Bad
The air quality light automatically goes
on when the purier is switched on.
Note
• The built-in air quality sensor measures the
air quality and automatically selects the
appropriate color of the air quality light. When
the air is clean, the color of the air quality light
is in blue. When the air quality deteriorates,
the color of the air quality light changes from
dark purple to red.
Switch on
1 Put the plug of the air purier into
the power socket.
» All lights go on from left to right
in cycle, and you hear a beep.
Then, the lights go out again.
» The air quality light shows
4 colors successively.
2 Press the button to switch on the
purier.
» The fan speed indicators
and goes on.
Note
• When the purier is switched on, the air quality
sensor will take some time to measure the
air quality in the room. The air quality light
changes its color and eventually stays in
the correct color in accordance with the air
quality..
3 Press and hold the button for
2 seconds to switch o the purier.
2”
Tip
• The purier has a memory mode. It will recall
the previous settings of your last use.
• If you disconnect the purier from the power
supply after switching o, it will enter the
default mode for next use. The fan speed is
.

12
EN
Set the sensitivity of the
air quality sensor
To meet dierent needs when you use
the appliance, we are oering you the
opportunity to adjust the sensitivity of
the air quality sensor.
There are 3 sensitivity levels:
• standard
• sensitive
• extra sensitive
The pollution sensor is set to extra
sensitive. You can adjust the sensitivity
of the air quality sensor in the following
way.
Note
• When it is set to a higher sensitivity, the purier
becomes more allergic to the pollutants in
the air. When the purier is in mode, it is
more likely to choose a higher fan speed than
the standard mode.
1 Unplug the air purier from the
power socket.
2 Wait for a while before putting the
plug back into the power socket.
3 Press the and buttons
simultaneously.
» The purier beeps twice and one
of the fan speed indicators ( ,
or ) ashes to show the current
sensitivity level of the air quality
sensor.
Fan
speed
indicator
Sensitivity level
Extra sensitive (default
sensitivity)
Sensitive
Standard
4 Press the button to adjust the
sensitivity level of the air quality
sensor.
» One of the indicators ( , ,
or ) goes on to show the
preferred sensitivity level of the
air quality sensor.
5 Press and hold the button for
3 seconds to switch o the purier,
and the sensitivity setting is saved.
Note
• When setting the sensitivity, if no button is
pressed in 10 seconds, the purier will skip
the sensitivity setting mode, and maintain the
previous setting.

13
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English
Select the fan speed
Note
• After you change the sensitivity, the purier
automatically starts operating at the set
sensitivity level whenever you switch on the
purier.
You can select the desired fan speed.
1 Press the button once or more
times to select the desired fan
speed ( , , , , , or ).
Set the timer
With the timer function, you can let
the purier operate for a set number of
hours. When the set time has elapsed,
the purier automatically switches o.
1 Press the button to activate the
timer.
» The timer indicator ( , , or )
goes on.
2 Press the button repeatedly to
choose the number of hours you
want the purier to operate. The
corresponding indicator
( , , or ) goes on.
hh h
To deactivate the timer function, press
the button repeatedly until the
indicator ( , , or ) is out.
Activate child lock
You can activate the child lock function.
1 Press and hold the button for
3 seconds to activate the child lock.
» The child lock indicator lights up.
3”
2 Press and hold the button again
for 3 seconds to deactivate the child
lock.
3”
Note
• When the child lock function is activated, all
buttons are locked except the button.
There will be no audio feedback when you
press the buttons.

14
EN
Night mode
The purier works in harmony with its
surroundings. The purier automatically
switches to night mode in 3 minutes
when the room in which it is operating
becomes dark. All the lights on the
control panel slowly go out. You can
touch any buttons on the control panel
during this period, and the lights go
back on. However, they will go out again
in 5 seconds if the purier is in idle.
If the room becomes bright again for 5
minutes or longer, the purier resumes
normal operation.
5 Clean your air
purifier
Tip
• You could use the concave of the air quality
light as a handle to lift the purier up.
Note
• Always unplug the purier before you clean or
move it.
• Never immerse the purier in water or any
other liquid.
• Never use abrasive, aggressive, or ammable
cleaning agents such as bleach or alcohol to
clean any part of the purier.
• Only the pre-lter is washable. Other air
purier lters are not washable nor vacuum
cleanable.
Clean the air purier
Regularly clean the inside and outside
of the purier body to prevent dust from
collecting.
1 Wipe away dust with a soft dry cloth
from the body of the purier.
2 Clean the air inlet and the air outlet
with a soft dry cloth.

15
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English
Clean the air quality
sensor
Clean the air quality sensor every
2 months for optimal functioning of the
purier. Clean it more frequently if you
use the purier in a dusty environment.
Note
• When the humidity level in the room is very
high, it is possible that condensation develops
on the air quality sensor. As a result, the air
quality light may indicate that the air quality
is bad even though it is good. In this case you
have to clean the air quality sensor or use one
of the manual speed settings.
1 Clean the air quality sensor inlet
and the air quality sensor outlet
with a soft brush.
2 Remove the air quality sensor cover.
3 Clean the air quality sensor, the
dust inlet and the dust outlet with a
lightly moistened cotton swab.
4 Dry them with a dry cotton swab.
5 Reattach the air quality sensor
cover.

16
EN
3 To remove the pre-lter, grab the
two projections and pull the lter
towards you.
4 Use a vacuum cleaner or wash the
pre-lter under a running tap. If
the pre-lter is very dirty, use a soft
brush to brush away the dust.
5 Air dry the pre-lter.
6 Put the pre-lter back into the
purier. Attach all hooks properly to
the purier.
2
1
6 Clean the pre-
filter
Note
• The pre-lter is washable.
• Clean the pre-lter for every two weeks to
ensure optimal functioning of the purier.
• When the pre-lter needs cleaning, the
goes on.
1 Switch o the purier and unplug it.
2 Place your ngers in the recess of
the side panels and gently pull the
top part of the front panel towards
you. Then lift the hooks at the
bottom of the panel out of the top
of the purier.

17
EN
English
7 Replace the
filters
The indicator of the lter replacement
indicates the respective lters
( , , or )have to be replaced.
Note
• Lifetime of the lter is based on the volume
of air puried, it may dier from the way
of using. In heavily polluted environment,
the lter lifetime may be shorter than the
recommended time.
• If you remove the front panel for lter
changing while the purier is switched on, all
lights on the control panel will be o.
• Once the front panel is placed back to the
purier, it starts to run as its previous status .
• The replaceable lters are not washable nor
vacuum cleanable.
For AC4372
Replace the multi-care lter, the
activated carbon lter, and the HEPA
lter when the respective indicators
( , , and )go on.
For AC4374
Replace the integrated Multi-care lter
when the respective indicator ( )goes
on.
This will last for approximately 2 weeks.
On the last day of the 2 weeks, the
purier beeps every 30 minutes to
inform you that the lter needs to be
replaced.
7 To reattach the front panel, insert
the bottom hooks into the bottom
of the purier rst (1). Then, push
the panel against the body of the
purier (2).
8 Plug the air purier into the power
socket and press the button to
switch on the purier.
9 Press and hold the button for
3 seconds to reset the lter lifetime.
» go o.
3s
Note
• Make sure that the pre-lter is completely dry.
If it is still wet, bacteria may multiply in it and
shorten the lifetime of the pre-lter.
• Make sure that the side with the two
projections is pointing towards you, and that
all hooks of the pre-lter are properly attached
to the purier.

18
EN
4 For AC4372, remove the multi-care
lter, activated carbon lter and
HEPA lter from the purier.
For AC4374, remove the integrated
Multi-care lter from the purier.
5 Take the used lter by the two
sides and deposit it gently into the
household trash bin.
Note
• Insert the lters in the correct position.
• For AC4372, make sure you place the lters in
the order of HEPA lter, the activated carbon
lter, the multi-care lter, and then pre-lter.
• For AC4374, make sure you place the lters in
the order of integrated Multi-care lter, and
then pre-lter.
• Make sure that the side with the tag is pointing
towards you.
1 Switch o the purier and unplug it.
2 Place your ngers in the recesses
of the side panels and gently pull
the front panel towards you. Then
lift the panel o the hooks at the
bottom of the purier.
3 To remove the pre-lter, grab the
two projections and pull the lter
towards you.

19
EN
English
For AC4374, put the integrated
Multi-care lter back into the
purier.
8 Put the pre-lter back into the
purier.
2
1
9 To reattach the front panel, insert
the bottom hooks into the bottom
of the purier rst (1). Then, push
the panel against the body of the
purier (2).
Note
• Do not touch the pleated lter surface, or
smell the lter as it has collected pollutants
from the air.
• Wash your hands with tap water and soap
after you have touched the used lter.
6 Remove all packaging material
from the new lters that need
replacement.
7 For AC4372, put the HEPA lter,
activated carbon lter and multi-
care lter back into the purier.

20
EN
10 Press and hold the button for
3 seconds to reset the lter lifetime.
» For AC4372: , , , and
go o.
3s
» For AC4374: and go o.
3s
Reset lter lock
After 2 weeks of lter replacement alert,
and the lters are still not replaced.
Then, the purier will not work until the
lter is replaced and the lter lock is
reset.
The goes on along with the lter
replacement indicators ( , , , and
). All indicators are o except
if it has been activated.
, , and buttons remain active,
while and buttons are deactive.
See “Replace the lters” section to reset
the lter lock.