AC4081 - Air purifier PHILIPS - Free user manual and instructions

Product Type	Air Purifier
Brand	Philips
Model	AC4081
Color	White/Silver
Dimensions (W x D x H)	200 x 200 x 400 mm
Weight	3.0 kg
Power Supply	AC 220-240V, 50 Hz
Power Consumption	20 W (max)
Air Cleaner CADR (Smoke)	150 m³/h
Filtration Stages	Pre-filter, HEPA, Carbon
Filter Type	HEPA H13
Noise Level (max)	50 dB
Noise Level (night mode)	30 dB
Room Size (max)	20 m²
Air Quality Sensor	Yes (PM2.5)
Auto Mode	Yes
Night Mode	Yes
Timer	1-8 hours
Filter Replacement Indicator	Yes
Filter Replacement Interval	6 months
Maintenance	Clean pre-filter monthly
Safety Features	Child lock, cover-off shut down
Spare Parts	AC4081 Filter (HEPA/Carbon)
Repairability Index	7.5/10

Frequently Asked Questions - AC4081 PHILIPS

How often should I replace the filter in my Philips AC4081?

The filter should be replaced every 6 months, or when the filter replacement indicator lights up. Using a clogged filter reduces performance.

Can I wash the HEPA filter of the AC4081?

No, the HEPA filter is not washable. Only the pre-filter can be cleaned with a vacuum or mild soap. Replace the HEPA filter when needed.

How do I reset the filter replacement indicator?

After replacing the filter, press and hold the timer button for 3 seconds. The indicator light will turn off, confirming the reset.

What is the maximum room size for the Philips AC4081?

The air purifier is designed for rooms up to 20 m² (215 sq ft) for effective air cleaning.

Does the AC4081 have a child lock feature?

Yes, press and hold the mode button for 3 seconds to activate the child lock. All buttons will be locked to prevent accidental changes.

How do I clean the pre-filter?

Remove the pre-filter from the back of the unit every month. Vacuum it or rinse with water and let it dry completely before reinserting.

Why is the air quality indicator red?

A red indicator means the PM2.5 level in the room is high. The purifier will automatically increase fan speed. Place the unit in a central location.

Can I use the AC4081 at night?

Yes, activate Night mode for ultra-quiet operation (< 30 dB) and reduced light brightness. The fan runs at minimum speed.

What spare parts are available for this model?

The main spare part is the Philips AC4081 filter (part number FY4081), which includes HEPA and carbon layers. Order online or from authorized dealers.

How loud is the purifier on maximum speed?

At maximum speed, noise level reaches 50 dB, similar to a quiet conversation. Night mode is much quieter at 30 dB.

USER MANUAL AC4081 PHILIPS

White Philips air purifier device with circular top and control buttons (no visible text or symbols on body)

EN User manual 3

Prepare for humidification 10

4 Using the appliance 12

Understand the air quality light 12

Switch on and off the appliance 12

Change the working mode 13

Set the child lock 17

Water level 17

5 Cleaning 18

Cleaning schedule 18

Clean the body of the appliance 18

Clean the air quality sensor 18

Clean the water tank and humidification filter 19

Clean the pre-filter and descale the humidification filter 20

6 Replacing the filters 22

Understand the healthy air protect lock 22

Replace filter 2 22

Replace the humidification filter 23

7 Resetting the filter lifetime counter 25

8 Troubleshooting 26

9 Guarantee and service 28

Order parts or accessories 28

10 Notices 29

Electromagnetic fields (EMF) 29

Recycling 29

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 flammable detergent enter the appliance to avoid electric shock and/or a fire hazard.
• Do not clean the appliance with water, any other liquid, or a (flammable) detergent to avoid electric shock and/or a fire hazard.
• Do not spray any flammable materials such as insecticides or fragrance around the appliance.
• The water in the water tank is not suitable for drinking. Do not drink this water and do not use it to feed animals or to water plants. When you empty the water tank, pour the water down the drain.

Warning

• Check if the voltage indicated on the bottom 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 qualified 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.

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 filters are properly installed before you switch on the appliance.

- Only use the original Philips filters specially intended for this appliance. Do not use any other filters.

- Avoid knocking against the appliance (the air inlet and outlet in particular) with hard objects.

• Always lift or move the appliance by both handles at the sides of the appliance.

- Do not insert your fingers or objects into the air outlet or the air inlet to prevent physical injury or malfunctioning of the appliance.

- 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 fireplaces.

· Always unplug the appliance after use and before filling water, cleaning, or carrying out other maintenance.

- 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.

- When the appliance is not used for a long time, bacteria may grow on the filters. Check the filters after a long period of

disuse. If the filters are very dirty, replace them (see the chapter ‘Replace the filters’).

• 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 safety device in case of accidents with combustion processes and hazardous chemicals.

- Clean the water tank every day to keep it clean.

- Only fill the water tank with cold tap water. Do not use ground water or hot water.

- Do not put any substance other than water in the water tank. Do not put fragrance in the water tank.

- If you do not use the humidification function for a long time, clean the water tank and humidification filter tray. Dry the humidification filter.

- If you need to move the appliance, disconnect the appliance from the power supply first. Then empty the water tank. Carry the appliance horizontally by both handles on the sides of the appliance.

- Unplug the appliance during filling and cleaning.

2 Your combi air purifier and humidifier

Congratulations on your purchase, and welcome to Philips!

To fully benefit from the support that Philips offers, register your product at www.philips.com/welcome.

Philips VitaShield IPS technology and NanoCloud technology ensures you "Healthy air always".

VitaShield IPS technology effectively remove pollutants (ultrafine particles, allergens, bacteria and viruses) with size >0.02 micron including bacteria and virus*.

NanoCloud technology, using a special humidification filter adds H2O molecules to the dry air, and produces healthy humid air without formation of water mist. Its humidification filter retains bacteria, calcium and other particles from the water.

*According to 2008 Microbiological Risk Assessment Report of the World Health Organization (WHO), the avian influenza, human influenza viruses, Legionella, Hepatitis viruses and SARS coronavirus are larger than 0.02 micron.

Read this user manual carefully before you use the appliance, and save it for future reference.

3 Getting started

Install filters

The appliance comes with all filters fitted inside. Remove the packaging of the filters before you can use the appliance. Remove all filters, unpack them, and place them back into the appliance described as follows:

Tip

- When you remove or insert filters, place the appliance against a wall for more stability.

Note

- Insert the filters in the correct position. - Make sure that you place filter 2 in the appliance first and then the pre-filter. - Make sure that the side with the tag is pointing towards you.

1 Unlock the bottom of the front panel from the appliance, then gently pull the top part of the front panel towards you.

Diagram of a gray rectangular device with a circular top and labeled parts (1 and 2), no readable text or symbols present.

2 To remove the pre-filter, press the two clips down and pull the filter towards you.

Technical line drawing of a device interior with ventilation grilles and mounting holes (no text or symbols)

3 Remove filter 2 from the appliance.

Technical diagram of two labeled electronic device units (AC4080 and AC4081) showing internal components and mounting points (no text or symbols beyond labels)

4 Remove the packaging materials of filter 2.

Illustration of a hand holding a rectangular object with an arrow indicating upward motion (no text or symbols)

5 Put the unpacked filter 2 back into the appliance.

Technical line drawing of two electronic device modules labeled AC4080 and AC4081, showing internal components without any text or symbols.

6 Put the pre-filter back into the appliance.

Note

• Make sure that the side with the two clips is pointing towards you, and that all hooks of the pre-filter are properly attached to the purifier.

7 To reattach the front panel, mount the panel onto the top of the appliance first (1). Then, gently place the panel against the body of the appliance (2).

Diagram of a device interior showing a lid and internal compartments (no text or symbols)

Prepare for humidification

1 Remove all packaging materials of the humidification filter.

Diagram showing a 3D grid structure with an arrow indicating direction, no text or symbols present

2 Pull out the water tank from the side of the appliance.

Line drawing of a portable electronic device with a handle and top panel (no text or symbols)

3 Fill the water tank with cold tap water.

Line drawing of a container pouring liquid into a container (no text or symbols)

Note

- When pouring water into the water tank, make sure not to exceed the MAX water level indication.

4 Put the humidification filter into the water tank.

Diagram of a mechanical component with a grid-patterned block and an arrow indicating direction (no text or symbols)

5 Push the water tank back into the appliance.

Line drawing of a portable air conditioner unit with a handle and vent, no text or symbols present

4 Using the appliance

Understand the air quality light

Color of the air quality light	Air quality level
Blue Good
Purple Fair
Red Bad

The air quality light automatically goes on when the appliance is switched on, and shows all colors repeatedly. In a short while the air quality light selects the color that corresponds to the ambient air quality.

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 to purple or red.

Switch on and off the appliance

The appliance operates under air purification combined with humidification by default.

1 Put the plug into the wall socket. →All lights go on once and then go out again.

2 Press do switch on the appliance.

→ The PURIFY and HUMIDIFY lights are on.

→After measuring the air quality for a short while, the air quality sensor automatically selects the appropriate color of the air quality light.

The appliance enters AUTO mode, and the target humidity level is 50% by default.

3 Press for 2 seconds to switch off the appliance.

Note

- After the appliance is switched off by the on/off button ⏻ if the plug is still in the power socket, the appliance will resume working based on the last settings when it is switched on again.

Change the working mode

Besides operating under air purification combined with humidification, the appliance can also work under air purification only mode.

1 Empty the water tank.
2 After the appliance is switched on, press ⏻ once.
→The HUMIDIFY and humidity level indicators go out.
→The humidification function is deactivated. The appliance works under air purification only mode.

3 Press (again to activate the humidification function.

Note

• In air purification only mode, the humidification button Ⓞ does not respond.
  • The appliance cannot work under humidification only mode.

Set the sensitivity of the air quality sensor

This appliance allows you to adjust the sensitivity of the air quality sensor. There are three sensitivity levels:

• standard (default setting)
• sensitive
• extra sensitive
  You can adjust the sensitivity of the air quality sensor in the following way:

Note

- When the appliance is set to a higher sensitivity, the purifier becomes more allergic to the pollutants in the air. When the purifier is in AUTO mode, it is more likely to choose a higher fan speed than the standard mode. The air quality sensor selects the appropriate color of the air quality light in accordance with the higher sensitivity.

1 Unplug the appliance.
2 After a short while, put the plug in the wall socket again.
3 Press and hold the fan speed button ⚙ and humidifier button ⚙ simultaneously for 3 seconds.
→One or more fan speed lights flash to show the current sensitivity level of the air quality sensor.

Fan speed light Sensitivity level
~ + ≈standard
≈	sensitive
~	extra sensitive

4 Press the fan speed button to adjust the sensitivity level of the air quality sensor.

5 Press and hold for 2 seconds to save the setting and switch off the appliance.

Note

• When you are changing the sensitivity level, if you do not change any settings, or if you do not press for 2 seconds after you have changed any settings, the appliance will resume normal work without saving any changes.
  • After the sensitivity is changed and saved, the appliance automatically starts operating at the preset sensitivity level whenever you switch on the appliance.

In AUTO mode, the appliance selects the appropriate fan speed in accordance with the ambient air quality.

• Press the fan speed button to select AUTO mode.
• AUTO and one of the fan speed indicators (\~ or) light up.

Note

- In AUTO mode, when the air quality reaches the target (air purification only mode), or when the air quality and humidity reach the target simultaneously (combi mode), the appliance will work with a lower fan speed, and the fan speed indicator ( ) goes out.

Manual

You can manually select the desired fan speed.

- Press the fan speed button once or more times to select the desired fan speed (\~, ≈or) ≈

Note

• Fan speed ≈s available for AC4081 only.
• In Manual mode, when the air quality reaches the target (air purification only mode), or when the air quality and humidity reach the target simultaneously (combi mode), the appliance will continue to work with the selected fan speed.

Tip

• If the air quality light is in blue color, this means the air quality is good, and you can select a lower fan speed.
• On the other hand, if the air quality light is in red or purple color, this means the air quality is bad or fair. You can select a higher fan speed to clean the air quickly.

Sleep mode

In sleep mode, the appliance operates very quietly.

- Press the fan speed button to select the sleep mode. →The sleep indicator lights up.

To change to another fan speed, press the fan speed button Ⓜ.

Note

- When the appliance switches to sleep mode, the indicators goes out after 1 minute, and the appliance keeps working.

Set the timer

With the timer function, you can let the appliance operate for a set number of hours. When the set time has elapsed, the appliance automatically switches off.

1 Press the timer button to activate the timer.

→The timer light (IH 4H) goes on.

2 Press the timer button repeatedly to choose the number of hours you want the appliance to operate. The corresponding timer light goes on. To deactivate the timer function, press the timer button repeatedly until the timer light (1H, 4H or ) goes out.

Set the humidity level

Note

- Make sure that the water tank is filled with water when you want to use the humidification function (see the chapter "Get started", section "Prepare for humidification").

- Press the humidity button once or more times to set the desired air humidity to 40%, 50% or 60%.

→The corresponding humidity light (40%, 50% or 60%) starts to flash.

→When the appliance reaches the target humidity level, the humidity level indicator remains on.

Note

- If you want to increase the humidity level in shorter time, you can select a higher fan speed.

Set the child lock

Note

- Child lock is only applicable for AC4081.

- Press and hold the fan speed button Ⓤ and timer button ⏱ simultaneously for 3 seconds to activate child lock.

→When the child lock is on, all buttons are not responsive.

- Press and hold the fan speed button Ⓧ and timer button ⏱ simultaneously for 3 seconds again to deactivate child lock.

Note

- When the child lock is on, the appliance will not respond when you press any button.

Water level

The water level in the water tank is visible through the water level window on the side of the appliance. When there is not enough water in the water tank, ◆ flashes to indicate that you have to refill the water tank.

Simple line drawing of a test tube inside a container with an inset showing liquid (no text or symbols)

Note

• When there is no water in the water tank, the refill water light remains on, and the humidification indicator flashes to remind users the humidification function is not working. When the water tank is refilled with water, the humidification function will be resumed.
• The refill water light does not light up under air purification only mode.

5 Cleaning

Note

• Always unplug the appliance before you clean it.
- Never immerse the appliance in water or any other liquid.
- Never use abrasive, aggressive, or flammable cleaning agents such as bleach or alcohol to clean any part of the appliance.
- Only the pre-filter and humidification filter are washable. The air purifier filter is not washable nor vacuum cleanable.

Cleaning schedule

Frequency C	Cleaning method
When necessary	Wipe the surface of the appliance with a soft dry cloth.
Every week R	Rinse the humidification filter.
	Rinse the water tank.
When the filter replace indicator 1 / 3 lights up	Clean the pre-filter.
	Descale the humidification filter with the vinegar-water mixture.
Every two months	Clean the air quality sensor and air humidity sensor with a dry cotton swab.

Clean the body of the appliance

Regularly clean the inside and outside of the appliance to prevent dust from collecting.

1 Wipe away dust with a soft dry cloth from the body of the appliance.
2 Clean the air inlet and the air outlet with a soft dry cloth.

Clean the air quality sensor

Clean the air quality sensor every two months for optimal functioning of the appliance. Clean it more frequently if you use the appliance 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 the air quality is good. In this case you have to clean the air quality sensor or use one of the manual speed settings.

1 Clean the inlet and outlet of the air quality sensor with a soft brush.

Diagram showing a brush applying material to a device component (no text or symbols visible)

2 Remove the cover of the air quality sensor.

Diagram showing a vehicle or road with a directional arrow pointing to a rectangular area, no text or symbols present.

3 Clean the sensor, the dust inlet and the dust outlet with a lightly moistened cotton swab.

Pure electrical circuit lines without any symbols

4 Dry them with a dry cotton swab.

5 Reattach the sensor cover.

Clean the water tank and humidification filter

Clean the water tank and humidification filter every week to keep them hygienic.

1 Pull the water tank from the side of the appliance.

Line drawing of a portable electronic device with a handle and control panel (no text or symbols)

2 Remove the humidification filter from the water tank.

Technical line drawing of a mechanical component with an arrow indicating upward motion (no text or symbols)

3 Rinse the humidification filter under a running tap.

Line drawing of a kitchen sink with a toothbrush and baseplate (no text or symbols)

Note

- Do not scrub the humidification filter, nor place it under direct sunlight.

4 Unfasten the locks on the edge of the water tank lid, and remove it from the water tank.

5 Rinse the water tank under a running tap.

Line drawing of a mechanical device with handle and base plate (no text or symbols)

Note

- If necessary, use a mild detergent to clean the water tank. In this case, rinse the water tank thoroughly.

6 Dry the water tank and its lid with a soft, dry cloth.
7 Put the lid back onto the water tank and fasten the locks.

8 Put the humidification filter back into the water tank.

Technical line drawing of a mechanical component with a grid-patterned panel and an arrow indicating downward motion (no text or symbols)

9 Put the water tank back into the appliance.

Line drawing of a portable electronic device with a circular top and adjacent mechanical component (no text or symbols)

Clean the pre-filter and descale the humidification filter

Filter alert light status	Follow this
Filter light 1 / 3 goes on	Clean the pre-filter and descale the humidification filter

Note

• Only the pre-filter and humidification filter are washable. Filter 2 is not washable.
• Filter light 1 goes on approximately once every month.

1 Wash the pre-filter under a running tap. If the pre-filter is very dirty, use a soft brush to brush away the dust.

Diagram of a robotic arm interacting with a grid-based platform, showing a black arrow pointing to the screen (no text or symbols present)

2 Air dry the pre-filter.

Note

• Make sure that the pre-filter is completely dry. If it is still wet, bacteria may multiply in it and shorten the lifetime of the pre-filter.

3 Mix the white vinegar with an equal amount of tap water in a container that is large enough to soak the humidification filter in.

Note

- White vinegar has 5 % acetic acid. - If there are white deposits (limescale) on the filter, make sure that the side with the white deposits is immersed in the water.

4 Let the humidification filter soak in the solution for one hour.

5 Discard the water-vinegar solution.

6 Rinse the humidification filter under the tap to rinse away vinegar residues. During rinsing, turn the humidification filter so that both the front and back sides are rinsed.

Line drawing of a kitchen sink with a drain and handle, placed on a surface (no text or symbols)

7 Let excess water drip off the humidification filter and let it air dry.

8 After the pre-filter and humidification filter are put back in the appliance, reset the filter lifetime counter. (Refer to chapter 7 "Resetting the filter lifetime counter")

6 Replacing the filters

Understand the healthy air protect lock

This appliance is equipped with the healthy air protect lock to make sure that the filters are in optimal condition when the appliance is operating. When the filter is almost full and has to be replaced, the specific filter light (2 / 3) start to flash.

When you do not replace the filter in time:

→The appliance stops operating and it is locked.
→The specific filter light (2 / 3) illuminate continuously.

Note

• The appliance is locked after the filter light has flashed for approximately 2 weeks.

Replace filter 2

Note

- Filter 2 is not washable nor vacuum cleanable.

Replace filter 2 when the filter light ^2 starts flashing.

1 Remove the filters using the tag on the filter. Take the filters by both sides and gently deposit them into the house hold trash bin.

Technical diagram of two labeled electronic device modules (AC4080 and AC4081), showing internal components without any text or symbols.

Note

• Do not touch the pleated filter surface, or smell the filter as it has collected pollutants from the air.
• Wash your hands after disposing of the used filters.

2 Remove all packaging material from the new filter 2.

Illustration of a folder with an arrow indicating upward motion (no text or symbols)

3 Put the new filter 2 into the appliance.

4 After the pre-filter is put back in the appliance, reset the filter 2 lifetime counter. (Refer to chapter 7 "Resetting the filter lifetime counter")

Replace the humidification filter

Replace the humidification filter when filter light 3 starts flashing.

1 Remove the used humidification filter from the water tank.

Diagram of a mechanical component with a grid-like structure and an upward arrow, no text or symbols present.

2 Remove all packaging material from the new humidification filter.

Diagram showing a 3D object with a grid pattern and an arrow indicating upward motion (no text or symbols)

3 Put the new humidification filter in the water tank.

Technical line drawing of a mechanical component with a grid-patterned panel and an arrow indicating downward motion (no text or symbols)

4 Put the water tank back into the appliance.

Line drawing of a portable air conditioner unit with a handle and vent, no text or symbols present

5 Reset the humidification filter lifetime counter. (Refer to chapter 7 "Resetting the filter lifetime counter")

7 Resetting the filter lifetime counter

When you replace the filters, it is important that you also reset the filter lifetime counter afterwards. This allows the appliance to be in sync with the filter lifetime.

1 Press and hold the reset button for 3 seconds, the filter light goes out, and the appliance resumes work automatically in the default settings (combi mode with AUTO as the fan speed).

8 Troubleshooting

This chapter summarizes the most common problems you could encounter with the appliance. If you are unable to solve the problem with the information below, contact the Consumer Care Center in your country.

Problem Possible solution
The appliance does not work even though it is plugged in.	· The filter replacement light has been on continuously but you did not replace the corresponding filter, it is now locked. In this case, replace the filter and reset the filter time.· The water refill lightflashes. Make sure the water tank is properly installed.
The appliance does not work even though it is switched on.	The appliance is working but the buttons are not responsive. Check is the child lock is on (for AC4081 only).
The water tank leaks. It is normal that the lid of the water tank is slightly wet when you remove it from the appliance. However, if water drops keep dripping from the bottom of the water tank, contact the Consumer Care Center in your country.
There are some white deposits on the humidification filter.	The white deposits are called limescale and they consist of minerals from the water. Limescale on the humidification filter affects the humidifying performance. Therefore you have to descale the humidification filter when the filter light 1/3flashes (See the chapter "Clean the pre-filter and descale the humidification filter").
No air comes out of the air outlet.	Plug the appliance into the power supply and switch on.
The airflow that comes out of the air outlet is significantly weaker than before.	· The pre-filter is dirty. Clean the pre-filter (see the chapter "Clean the pre-filter and descale the humidification filter").· Make sure that you have removed all packaging material from the filters.
The air quality does not improve, even though the appliance has been operating for a long time.	One of the filters has not been placed in the appliance.Make sure that all filters are properly installed in the following order, starting with the innermost filter:1) filter 2; 2) pre-filter.The air quality sensor is wet. The humidity level in your room is high and causes condensation. Make sure that the air quality sensor is clean and dry (see the chapter "Clean the air quality sensor").
The color of the air quality light always stays the same.	The air quality sensor is dirty. Clean the air quality sensor (see the chapter "Clean the air quality sensor").There is not enough ventilation in the room. Open a window, to improve the air circulation.
I do not see water vapor coming out of the appliance. Is it working?	When water vapor is very fine, it is invisible. With the NanoCloud humidification technology, the appliance produces healthy humid air from the outlet area without formation of water mist.
The appliance produces a strange smell.	The first few times you use the appliance, it may produce a plastic smell. This is normal. However, if the appliance produces a burnt smell, contact your Philips dealer or an authorized Philips service centre. The appliance may also produce an unpleasant smell when one of the filters is dirty. In this case, clean or replace the filter concerned.
I need cleaner air because I have an allergy.	You can change the air quality sensor sensitivity (see the chapter "Use the appliance, section "Set the sensitivity of the air quality sensor") to make the appliance clean the air even better.
The appliance is extra loud.	Please check if you have removed all the packaging material from the filters.If the appliance is still too loud, you can change the fan speed to a lower fan speed level.
The appliance still indicates that I need to replace a filter, but I already did.	Perhaps you did not press the reset button properly. Plug in the appliance, press the button to switch on and press and hold the reset button for 3 seconds.

9 Guarantee and service

If you need information or if you have a problem, please visit the Philips website at www.philips.com or contact the Philips Consumer Care Center in your country (you find its phone number in the worldwide guarantee leaflet). If there is no Consumer Care Centre in your country, go to your local Philips dealer.

Order parts or accessories

If you have to replace a part or want to purchase an additional part, go to your Philips dealer or visit www.philips.com/support.

If you have problems obtaining the parts, please contact the Philips Consumer Care Center in your country (you can find its phone number in the worldwide guarantee leaflet).

10 Notices

Electromagnetic fields (EMF)

This Philips appliance complies with all applicable standards and regulations regarding exposure to electromagnetic fields.

Compliance with EMF

Koninklijke Philips N.V. manufactures and sells many products targeted at consumers, which, like any electronic apparatus, in general have the ability to emit and receive electromagnetic signals.

One of Philips' leading Business Principles is to take all necessary health and safety measures for our products, to comply with all applicable legal requirements and to stay well within the EMF standards applicable at the time of producing the products.

Philips is committed to develop, produce and market products that cause no adverse health effects. Philips confirms that if its products are handled properly for their intended use, they are safe to use according to scientific evidence available today.

Philips plays an active role in the development of international EMF and safety standards, enabling Philips to anticipate further developments in standardization for early integration in its products.

Recycling

Never dispose of your product with other household waste. Please inform yourself about the local rules on the separate collection of electrical and electronic products. The correct disposal of your old product helps prevent potentially negative consequences on the environment and human health.

Daftar isi

1 Penting 32

Pengaman 32

Diagram of a gray rectangular device with a circular button and labeled parts (1, 2), no readable text or symbols present.

Technical line drawing of a device interior with ventilation grilles and mounting brackets (no text or symbols)

Technical line drawing of two electronic device modules labeled AC4080 and AC4081, showing internal components without any text or symbols.

Illustration of a hand holding a rectangular object with an arrow indicating upward motion (no text or symbols)

Diagram of a refrigerator interior showing the lid and side panel with numbered components (no text or symbols)

Diagram of a mechanical component with a grid pattern and an arrow indicating direction (no text or symbols)

Line drawing of a portable air purifier with a handle and control panel (no text or symbols)

3 Pasang filter pelembap ke dalam tangki air.

Technical line drawing of a mechanical component with a grid-patterned upper section and a cutaway view showing internal structure (no text or symbols)

Line drawing of a container with liquid being poured into it, no text or symbols present

Catatan

Line drawing of a portable air conditioner unit with a handle and vent, no text or symbols present

4 Menggunakan alat

Pahami lampu kualitas udara

Lampu kecepatankipas	Tingkat kepekaan
~ + ≈standar
≈	sensitif
~	ekstra sensitif

Catatan

Simple line drawing of a test tube inside a container with an inset showing liquid (no text or symbols)

Catatan

Diagram showing a paintbrush applying black paint to a device panel (no text or symbols visible)

Pure electrical circuit lines without any symbols

Line drawing of a portable electronic device with a handle and ventilation slots (no text or symbols)

Diagram of a mechanical device with a grid block and directional arrow (no text or symbols)

Diagram of a kitchen sink with a bath and a pressure gauge (no text or symbols)

Catatan

- Jangan menggosok filter pelembap atau meletakkannya langsung di bawah sinar matahari.

5 Bilas tangki air di bawah air keran yang mengalir.

Line drawing of a car interior with handle and seat (no text or symbols)

Catatan

Technical line drawing of a mechanical component with a grid-patterned panel and an arrow indicating direction (no text or symbols)

Line drawing of a portable electronic device with a circular top and adjacent mechanical bracket (no text or symbols)

Diagram of a grid-based mechanical or electrical component with a tool and arrow pointing to a grid pattern (no text or symbols)

2 Angin-anginkan pra-filter hingga kering.

Catatan

Line drawing of a faucet on a sink with a textured base and circular base (no text or symbols)

Ganti filter 2 saat lampu filter mulai berkedip.

Illustration of a box being inserted into a bag with an arrow indicating direction (no text or symbols)

Technical diagram of two labeled electronic devices (AC4080 and AC4081) showing internal components and mounting points (no text or symbols on the devices themselves)

Ganti filter pelembap bila lampu filter mulai berkedip.

Diagram of a mechanical component with a grid-like structure and an arrow indicating upward motion (no text or symbols)

Diagram of a mechanical component with a grid pattern and an arrow indicating direction (no text or symbols)

3 Letakkan filter pelembap baru di tangki air.

Technical diagram of a mechanical assembly with a grid-patterned component and an arrow indicating direction (no text or symbols)

Line drawing of a portable electronic device with a circular top and adjacent mechanical bracket (no text or symbols)

5 Menyetel ulang penghitung masa pakai filter. (Lihat bab 7 "Menyetel ulang penghitung masa pakai filter")

7 Menyetel ulang penghitung masa pakai filter

8 Pemecahan Masalah

3D diagram of a rectangular device with labeled components (no text or symbols)

Technical line drawing of a device interior with grid panels and ventilation slots (no text or symbols)

Technical diagram of two electronic device enclosures labeled AC4080 and AC4081, showing internal components without any text or symbols beyond labels.

Illustration of a hand holding a rectangular object with an arrow indicating upward motion (no text or symbols)

Technical diagram of two electronic device modules labeled AC4080 and AC4081, showing internal components without any readable text or symbols.

Diagram of a device interior showing a lid and internal compartments with arrows indicating rotation (no text or symbols present)

Diagram of a mechanical component with a downward arrow indicating force or direction (no text or symbols)

Line drawing of a portable air purifier device with a handle attachment (no text or symbols)

Line drawing of a container pouring liquid into a container (no text or symbols)

หมายเหตุ

Diagram of a mechanical component with a grid pattern and a downward arrow indicating force or direction (no text or symbols present)

Line drawing of a portable air purifier with a handle and vent, no text or symbols present

4 การใช้งาน

graph TD
    A["Lock Icon"] --> B["Arrow to Lock Icon"]
    C["Clock Icon"] --> D["Clock Icon"]
    E["Arrow to Clock Icon"] --> F["Clock Icon"]
    G["Arrow to Clock Icon"] --> H["Clock Icon"]
    I["Arrow to Clock Icon"] --> J["Clock Icon"]
    K["Arrow to Clock Icon"] --> L["Clock Icon"]
    M["Arrow to Clock Icon"] --> N["Clock Icon"]
    O["Arrow to Clock Icon"] --> P["Clock Icon"]
    Q["Arrow to Clock Icon"] --> R["Clock Icon"]
    S["Arrow to Clock Icon"] --> T["Clock Icon"]
    U["Arrow to Clock Icon"] --> V["Clock Icon"]
    W["Arrow to Clock Icon"] --> X["Clock Icon"]

หมายเหตุ

Simple line drawing of a test tube inside a container with liquid, no text or symbols present

หมายเหตุ

Diagram showing a paintbrush applying black paint to a device component (no text or symbols visible)

Pure electrical circuit lines without any symbols

Line drawing of a device with a circular top and mechanical component attached (no text or symbols)

Diagram of a mechanical component with a grid structure and an upward arrow, no text or symbols present

Line drawing of a kitchen sink with faucet and baseplate (no text or symbols)

หมายเหตุ

Line drawing of a mechanical device with handle and base plate (no text or symbols)

หมายเหตุ

Technical line drawing of a mechanical component with a grid-patterned upper section and a downward arrow indicating a force or direction (no text or symbols present)

Line drawing of a portable air conditioner unit with a handle and vent, no text or symbols present

Diagram showing a tool interacting with a grid-based platform, with a black arrow pointing to a cluster of dots (no text or symbols present)

Diagram of a kitchen sink with a toothbrush and mouth buffer, placed on a surface (no text or symbols)

Taking place it is a time to get the time

Technical diagram of two electronic device modules labeled AC4080 and AC4081, showing internal components without any text or symbols.

หมายเหตุ

Illustration of a device being lifted into a bag, showing an upward arrow (no text or symbols)

Technical line drawing of a mechanical component with an arrow indicating upward motion (no text or symbols)

Diagram of a mechanical component with a grid pattern and an upward arrow, no text or symbols present

Technical line drawing of a mechanical component with a grid-patterned panel and directional arrow (no text or symbols)

Line drawing of a portable air conditioner unit with a handle and vent, no text or symbols present

8 การแก้ไขปัญหา

Diagram of a gray rectangular device with a circular button and labeled parts (1 and 2), showing no text or symbols beyond labels.

Technical line drawing of a device interior with grid and panel components (no text or symbols)

3 從產品移除過濾網 2。

Technical diagram of two labeled electronic device modules (AC4080 and AC4081) with internal grid structures and a directional arrow indicator (no text or symbols on the devices themselves)

4 拆除過濾網 2 的包裝物料。

Illustration of a folder with an arrow indicating upward motion (no text or symbols)

5 將拆開的過濾網 2 放回產品中。

Technical diagram of two electronic device modules labeled AC4080 and AC4081, showing internal components without any readable text or symbols.

6 將預過濾網放回本產品內。

提示

Diagram of a device interior showing a lid and internal compartments (no text or symbols)

準備加濕

1 拆除加濕過濾網的所有包裝物料。

Diagram of a mechanical component with a grid pattern and an arrow indicating direction (no text or symbols)

2 從產品側面拉出水箱。

Line drawing of a portable electronic device with a handle and top panel (no text or symbols)

3 將冷自來水注入水箱。

Line drawing of a container with liquid being poured into it, no text or symbols present

提示

Technical line drawing of a mechanical component with a grid-patterned panel and a downward arrow indicating a feature (no text or symbols present)

5 將水箱推回產品。

Line drawing of a portable electronic device with a circular top and adjacent mechanical bracket (no text or symbols)

4 使用本產品

認識空氣質素燈

提示

Simple line drawing of a test tube inside a container with liquid, no text or symbols present

提示

Diagram showing a tool interacting with a device panel (no text or symbols visible)

2 移除空氣質素感應器蓋。

Diagram showing a directional arrow pointing to a rectangular object with multiple small boxes inside, next to a curved line (no text or symbols)

Pure electrical circuit lines without any symbols

Line drawing of a white electronic device with a circular top and internal components, showing no text or symbols.

2 從水箱移除加濕過濾網。

Technical line drawing of a mechanical component with an arrow indicating upward motion (no text or symbols)

3 以自來水沖洗加濕過濾網。

Line drawing of a kitchen sink with faucet and baseplate (no text or symbols)

提示

5 以自來水沖洗水箱。

Line drawing of a car interior with handle and seat (no text or symbols)

提示

Diagram of a mechanical device with a grid-patterned panel and an arrow indicating direction (no text or symbols)

9 將水箱放回到產品中。

Line drawing of a portable air conditioner unit with a handle and vent, no text or symbols present

清潔預過濾網並除去加濕過濾網的水垢

Diagram of a robotic arm interacting with a grid-based platform, showing a black arrow pointing to a cluster of dots (no text or symbols present)

2 吹乾預過濾網。

提示

Line drawing of a kitchen sink with faucet and baseplate (no text or symbols)

Technical diagram of two electronic device modules labeled AC4080 and AC4081, showing internal components without any readable text or symbols.

提示

Illustration of a hand holding a rectangular object with an arrow indicating upward motion (no text or symbols)

3 將新的過濾網 2 放入產品中。

Technical diagram of two labeled electronic devices (AC4080 and AC4081) showing internal components and mounting features (no text or symbols on the devices themselves)

1 從水箱移除使用過的加濕過濾網。

Technical line drawing of a mechanical component with an arrow indicating upward motion (no text or symbols)

Diagram of a mechanical or structural component with a grid pattern and an upward arrow, no text or symbols present.

3 將新的加濕過濾網放入水箱。

Technical line drawing of a mechanical component with a grid-patterned inset and a downward arrow indicating a detail (no text or symbols)

4 將水箱放回到產品中。

Line drawing of a portable air conditioner unit with a handle and vent, no text or symbols present

8 疑難排解