Coway airmega 400S User manual

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Feature HighlightsThe following features are available for our Airmega Air Purifier.

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Real-time Air Quality Monitoring
Airmega’s pollution sensor tells you the indoor air quality in real-time. The
brightly colored LED ring lets you know if your indoor air is fresh or unhealthy
every minute of the day.
▶P. 23
Smart Mode
With Smart Mode, Airmega adapts to its surroundings. Fan speeds
automatically adjust based on the room’s air quality and room conditions.
▶P. 21
Mobile Application
With Airmega’s smartphone app, you can monitor the air quality inside your
home, see the status of the filters, schedule the timer, receive real-time
outdoor air quality updates, and even remotely activate the Airmega. (400S
and 300S only)
▶P. 16
Max2 Filter
The Max2 filter (an activated carbon filter plus Green True HEPA filter)
reduces more than 99% of volatile organic compounds (VOCs), odors such as
NH3, CH3CHO. It also captures and reduces up to 99.97 % of airborne particles in the air such as pollen, pollution, and
other allergens.

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▶P. 8
Filter Lifetime Notifications
With status alerts for the Max2 Filters and the Pre-filters, you’ll know when it’s time to replace them. And because the
Airmega gauges how much air has traveled through it, you can be sure the notifications are accurate.
▶P. 10

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Table of Contents
01 BEFORE
USING
THE
PRODUCTSymbols Used in This Manual Illustrations Used in This Manual Safety Instructions
______________________________________ 6666
02 PREPARATIONChecking the Product Parts Diagram
______________________________________________________ 889
03 INSTALLATIONSetting Up the Product Connecting the Power and Turning On the Air Purifier Connecting
the Air Purifier to the Wi‐Fi Network
_____________________________________________________(400S/300S only)
14161415

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04 OPERATIONSmart Mode - Auto Smart Mode - Sleep Smart Mode - ECO Manual Mode Setting the Timer
Checking the Air Quality Adjusting the Sensor Sensitivity
________________________________________________________
2021212222222323
05 MAINTENANCEFilter Maintenance and Cleaning Parts _
___________________________________________________ 2424
06 APPENDIXTroubleshooting Specification Legal Notice Limited Warranty
_________________________________________________________
3030313132

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01 BEFORE USING THE PRODUCT
Symbols Used in This ManualThe following symbols are used in this manual to explain procedures,
restrictions, handling precautions, and instructions that should be observed for safety.
Warning indicates a potentially hazardous situation that may result in death or severe injury to the user or others.
WARNING
Caution indicates a potentially hazardous situation that may result in injury to the user or others, or the loss of property.
CAUTION
Note indicates useful tips or additional information for procedures and product use. NOTE
[This square bracket represents control buttons and indicators on the product.e.g., [Power]]
Illustrations Used in This ManualIllustrations used in this manual are of the 400S unless specified.
Safety InstructionsRead and follow all the safety tips and warnings before using the product.

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• Do not exceed the voltage and power rating of the power outlet or connection device. This may generate excessive heat and
cause electric shock or fire. WARNING •
Disconnect the power plug from the electric outlet if strange sounds, smells, or smoke come from the product. Contact the
customer service center immediately for instructions.
READ AND SAVE THESE INSTRUCTIONS
•Remove the power plug from the electric outlet by grasping
the power plug and pulling it gently. Never pull the cord to
remove the power plug.
•Keep the electric cord away from heat sources.
•Do not repair the product unless this manual recommends
it. Doing so will void your warranty. All repair work must be
carried out by a qualified technician.
•Only use the appropriate type of electric socket for the product.
Connecting the product to an incorrect socket may result in
damage.
•Do not immerse the product or any of its parts in water. Operate
the product only after a qualified technical examines and replaces
the parts that were under water.
•Do not touch the power plug with wet hands.
•If the electric outlet is wet, do not connect the power plug of the
product. Wait till the electric outlet dries completely before use.
•Do not operate the product if the motor fan fails to operate or is
damaged.
•Disconnect the power plug from the electric outlet when the
product is not in use and before cleaning, inspecting, or
replacing parts.
•Use a dedicated electric outlet for the product. Do not
connect the product to a power strip that has connections to
several other products.
•Do not operate the product if the power plug or cords are
damaged.
•Do not forcibly bend, twist, pinch, or damage the power
cord.
•Do not force the power plug into an incorrect electric outlet
or into a loose electric outlet. Contact a qualified technician
to install a proper electric outlet.
•A damaged power plug or cord must be replaced by the
manufacturer or a qualified technician.

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•This product has a polarized plug (one blade is wider than
the other). To reduce the risk of electric shock, this plug is
intended to fit in a polarized outlet only one way. If the
plug does not fit fully in the outlet, reverse the plug. If it
still does not fit, contact a qualified electrician. Do not
attempt to defeat this safety feature.
•Do not use this product in industrial areas or factories
where oil, grease, or dust particles may be present. This
product is for household use only.
•Do not change the filter while the product is operating.
Always turn off the product and unplug the power plug
before accessing the components inside the product.
•Do not place the product near a humidifier or in humid
areas, such as bathrooms or laundry rooms, where the
product may come into contact with water.
•Do not place the product near flammable gases, cigarettes,
incense, and other combustible materials.
•Do not place the product on a bed or against soft objects,
such as curtains.
•Do not clean the product using detergents, paint thinner,
or other household solvents.
•Do not spray insecticides or other flammable materials
near the product.
•This product contains a chemical known to the State of
Califonia to cause cancer and birth defects or other
reproductive harm.(customers in the State of
California)California law requires this warning to be
given to
•This product should not be used by children under 8
without supervision. CAUTION
•This product should not be used by persons with reduced
physical, sensory, or mental capabilities or lack of
experience without supervision or instruction concerning to
the use of the product in a safe way and understand the
hazards involved.
•Do not allow children to play with the plastic wrapping and
product.
•Do not use this product with any solid-state speed control
device, as it may result in electric shock or fire.
•Do not use an adapter or extension cord, as it may cause
fire, shock, or personal injury.
•Do not use attachments or filters not recommended by the
manufacturer.
•Exercise caution while removing the components from the
product. Ensure that your body parts do not get stuck or
scratched while servicing the product.

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•Do not insert any objects or finger into the openings of the
product. If any objects fall into the openings, immediately
turn off the product and unplug the power plug. Contact a
qualified technician or the manufacturer to remove the
object.
•Do not wash or reuse the Max2 filters.
•Do not block the air outlet of the product. Doing so may
decrease the efficiency of the product and increase the risk
of injury.
•This product is for household use as described in this
manual. Using it in an industrial environment or any other
place not recommended by the manufacturer and may
result in electric shock, fire, and injury to person.
•Do not place anything on top of the product.
•Do not run the power cord under carpets or cover it with
rugs.
•Change the filters at the recommended intervals so that
excess dust does not accumulate.
•Do not place the product where the both sides of product
are blocked.
•Do not place the product in direct sunlight.
•Do not place the product next to or on windows.
•Place the product on a firm, flat, and dry surface that
provides sufficient air circulation.
•Keep the product and its cord out of way, where it cannot
be stepped on or tripped over.
•The end user has to be informed to keep at least 20 cm
separation with the antenna while this end product is
installed and operated.
•Operation is subject to the following two conditions:
(1)(2)including interference that may cause undesired
operation. this device may not cause harmful interference
and this device must accept any interference received,
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Checking the productBefore installing the air purifier, make sure all of the components are present. If any
items are missing or damaged, contact the customer service center.

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Pre-filterCaptures large particles like hair, fur, and dust by micro mesh.
Max2 filter (Activated Carbon + Green True HEPA)Captures and reduces more than 99 % of VOCs and odors such as
NH3, CH3CHO. It also captures and reduces up to 99.97 % of airborne particles, allergens, and contaminants down to 0.3 microns in
size.

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Parts DiagramCheck the parts of the product (exterior in the front and top view and control panel) and how
they function.

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Checking the product
Control Panel (400S/400)
400S
[Wi-Fi] button/indicator
Touch this button to connect to a Wi-Fi network. When the Wi-Fi connection is completed, the indicator is turned on.* The status
of Wi-Fi LED : - pairing process-- Blinking : Not connected yet or in the Constant LED: Wi-Fi connected LED off: Wi-Fi off
400
[Timer] button/indicator
Touch this button to automatically turn off after an hour, 4 hours, or 8 hours.
For 400S users, you can set the timer and scheduler using Airmega mobile application. NOTE
[Light] button
Touch this button to turn the air quality
indicator and light on or off.
[Pre Wash] button/indicator Shows the pre-filter cleaning cycle at 5
levels(100letters on button is lit, it
indicates thatthe pre-filters need to be
cleaned.*
After
cleaning

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the pre-
filters, touch an
d holdthis butto
n for 2~
3 seconds t
o reset th
e indicator. %, 80 %, 60 %, 40 %, 20 %, 0 %). When
the
[Max2 Change] button/indicator
Shows the Max2 filter lifetime at 5 levels (100letters
on button is lit, it indicates that the Max2 filters
need to be
replaced.* Afterrepla
cing the Max
2 filters, touc
h and holdt
his button fo
r 2~3 secon
ds
to
reset
the indicator. %, 80 %, 60 %, 40 %, 20
%, 0 %). When the
Light sensor
This sensor detects the intensity of
light. When the product is set to Smart
mode and it is dark,for 3 minutes, the
product enters Sleep mode
automatically. However, if the air
speed is set manually or pollution level
is above normal (in Smart mode),
Sleep mode will not be activated
automatically.

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Checking the product
Control Panel (300S/300)
300S
[Wi-Fi] button/indicator
Touch this button to connect to a Wi-Fi network. When the Wi-Fi
connection is completed, the indicator is turned on.* The status of Wi-Fi
LED : - pairing process-- Blinking : Not connected yet or in the Constant
LED: Wi-Fi connected LED off: Wi-Fi off
300
[Timer] button/indicator
Touch this button to automatically turn off after an hour, 4
hours, or 8 hours.
For 300S users, you can set the timer and scheduler using
Airmega mobile application. NOTE
[Pre Wash] button/indicator

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Shows the time of pre-filter cleaning cycle. When the letters on
the button is lit, clean the pre-filter. * After
cleaning the pre-filters, touch and
hold this button for 2~3
seconds to reset the
indicator.
[Max2 Change] button/indicator
Shows the time of Max2 filter life. When the letterson the button is lit,
replace the Max2 filters. * After replacing
the Max2 filters,
touch and hold
this button
for 2~3
seconds to reset
the indicator.
[Light] button
Touch this button to turn the air quality
indicator and light on or off.

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Touch this button to select the air speed or set the
product to Smart mode or Sleep mode.
Icon
Description
Air speed
Sleep mode
Smart mode