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,, The air quality light ring shows the quality of the air.

 

Air quality indication

Colour

Air quality

Blue

very good

Deep purple

good

Purple

fair

Red

bad

To switch off the air quality light ring, press the AIR QUALITY button.

Note:The air quality light ring automatically goes on when the appliance is switched on.

,, The appliance automatically starts operating in the AUTO mode.

To  switch off the appliance, press and hold the on/off button again until the power-on light goes out and unplug the appliance.

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 on the control panel and the air quality light ring may indicate that the air quality is bad even though the air quality is good. In this case,  the auto mode causes the appliance to run at high fan speed.You can solve this by cleaning the air quality sensor. If condensation develops frequently during periods of high humidity, we advise you to use one of the manual speed settings.

Fan speed lights/filter replacement lights

-- The lights on the right-hand side of the control panel have a dual function: they either indicate the fan speed or they indicate that the

filters should be replaced or cleaned.

-- When lights 1 to 3/4 light up continuously, they indicate the current fan speed.

-- When light 1 flashes, you have to clean the pre-filter. When lights 2 and/or 3/4 flash, you have to replace these filters. If lights 2 and/or 3/4 flash, the REPLACE FILTER light also flashes (see chapter ‘Filter replacement’ for more information).

-- When lights 2, 3/4 and the REPLACE FILTER light are on continuously, the appliance is locked (see chapter ‘Filter replacement lock’ for more information).

Adjusting the air quality sensor sensitivity

People with certain health problems (e.g. allergies or asthma) have a greater need for healthy air. For this reason, the appliance allows you to

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Philips AC4072, AC4074 user manual Air quality indication, Colour Air quality, Fan speed lights/filter replacement lights

AC4074, AC4072 specifications

The Philips AC4074 is a cutting-edge air purifier designed to enhance indoor air quality in homes and offices. With its modern aesthetic and robust functionality, this device addresses common air pollutants, providing a healthier living environment.

One of the standout features of the Philips AC4074 is its advanced filtration system. It utilizes a multi-layered filter that includes a pre-filter, a HEPA filter, and activated carbon. The pre-filter effectively captures larger particles such as dust and hair, while the HEPA filter is capable of trapping 99.97% of particles as small as 0.3 microns. This includes harmful allergens like pollen, dust mites, and pet dander, making it ideal for allergy sufferers. The activated carbon layer works to eliminate odors and harmful gases, ensuring that the air is not only clean but also fresh.

The AC4074 incorporates Philips’ innovative VitaShield technology, which enhances its filtration capabilities. This technology senses the air quality in real-time, automatically adjusting the purification speed based on the level of pollutants detected. With its Smart Sensor, users can rest assured that the device will operate efficiently, providing purified air without any manual intervention.

In addition to its powerful purification features, the Philips AC4074 boasts a user-friendly interface. It features intuitive controls, allowing users to adjust settings with ease. The LED display provides real-time feedback on air quality, filter status, and operational mode.

Another notable characteristic of the AC4074 is its quiet operation. Designed for use in bedrooms and living spaces, the air purifier includes a sleep mode, which reduces noise levels for undisturbed rest. Its compact design allows it to fit seamlessly into any room, making it a practical choice for various living environments.

With energy efficiency in mind, the Philips AC4074 is also designed to operate without significantly increasing energy bills. The unit is compliant with various energy standards, ensuring that it provides environmental benefits without compromising on performance.

Overall, the Philips AC4074 represents a harmonious blend of technology, efficiency, and design, making it an excellent choice for anyone looking to improve their indoor air quality. With its powerful filtration system, smart sensing capabilities, user-friendly controls, and quiet operation, it stands out as a reliable air purifier that meets the needs of modern living.