Philips AC4090 is an air purifier designed to improve indoor air quality by removing pollutants, allergens, and odors. It features a 3-in-1 filtration system with a pre-filter, activated carbon filter, and HEPA filter, which work together to capture up to 99.97% of particles as small as 0.3 microns. Additionally, the AC4090 has a number of features to enhance its performance and user experience, including an auto mode that adjusts fan speed based on air quality, a sleep mode for quiet operation, and a healthy air protect alert system that notifies you when it's time to replace the filters.
Philips AC4090 is an air purifier designed to improve indoor air quality by removing pollutants, allergens, and odors. It features a 3-in-1 filtration system with a pre-filter, activated carbon filter, and HEPA filter, which work together to capture up to 99.97% of particles as small as 0.3 microns. Additionally, the AC4090 has a number of features to enhance its performance and user experience, including an auto mode that adjusts fan speed based on air quality, a sleep mode for quiet operation, and a healthy air protect alert system that notifies you when it's time to replace the filters.
A
C4090
Register your product and get support at
www.philips.com/welcome
Us
er man
u
a
l
3
3EN
Contents
1 Important 4
Safety
y
4
5
What’s in the box
x
5
3 Get started 6
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9 Troubleshooting 22
10 Guarantee and service 23
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11 Notices 24
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English
4 EN
Caution
1 Important
Danger
Warning
Caution
5EN
What’s in the box
Warranty
Quick start guide
AC4090
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www.philips.com
/welcome
A
Filter 4:
HEPA filter
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4: HEPA
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4: HEPA
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Filter 3:
Activated carbon filter
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3:
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Filter 2:
Multi-care filter
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2:
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Filter 1:
Pre-filter
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1:
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1:
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A
AC4016
Register your product and get support at
www.philips.com/welcome
English
3
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19
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33
(
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C4184)
A
ir
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sensor
(AC4183
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A
C4181)
English
6 EN
3
4
5
3 Get started
Tip
Note
1
2
1
2
7EN
6
1
2
Note
7
2
1
English
8 EN
Understand the healthy air
protect alert
air
p
rotect alert
co
m
b
ina
t
i
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Follow this
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Understand the healthy air
protect lock
t
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»
»
Note
4 Use the air
Understand the air quality
light
ligh
t
Air quality level
Re
d
bad
Note
Understand the auto mode
9EN
quality sensor
sensitiv
e
Note
1
2
»
F
an spee
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l
ig
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t
S
ensitivity level
sens
i
t
i
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1
»
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»
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3
English
10 EN
Auto
Manual
1
2
Tip
3
»
O
ne of the
4
and
Note
11EN
Set the timer
S
ituations You will see
C
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ne of the
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Silent mode
1
2
»
Th
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English
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2
»
Th
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1
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5 Clean your air
Note
1
2
Clean the air quality sensor
Note
English
14 EN
2
1
2
3
1
2
4
5
6
1
2
6 Clean the pre-
Note
and
1
15EN
7
2
1
and
Note
English
16 EN
Note
1
2
3
1
2
7 Replace the
t
he
Note
Note
a
n
d
t
h
e
Tip
17EN
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2
Note
9
2
1
10
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6
English
18 EN
2
3
1
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4
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Replace the activated carbon
Note
and
t
h
e
Tip
Note
1
19
9
1
2
Note
10
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1
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6
7
8
20 EN
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Note
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Philips AC4090 is an air purifier designed to improve indoor air quality by removing pollutants, allergens, and odors. It features a 3-in-1 filtration system with a pre-filter, activated carbon filter, and HEPA filter, which work together to capture up to 99.97% of particles as small as 0.3 microns. Additionally, the AC4090 has a number of features to enhance its performance and user experience, including an auto mode that adjusts fan speed based on air quality, a sleep mode for quiet operation, and a healthy air protect alert system that notifies you when it's time to replace the filters.
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