Coway AP-2021A Gray User Manual page 16

INDICATORS AND BUTTONS
Buttons
1
Clean mode
button
Clean mode button
1
Press to select the desired clean mode.
Smart → Turbo → Silent → ECO
Light/Lock button
3
Use this button to turn on and off the
indicator and air quality indicator.
While the air quality indicator and other
indicators are turned on, pressing the Light
button repeatedly executes the following:
Air Quality indicator OFF → All OFF except
for the light button and the measurement
indicator → All indicators Light OFF (except
for the Light button) → All indicators ON
＊ You can lock all the buttons by pressing and
holding this button for more than 3 seconds.
Press the button again for more than 3 seconds
to unlock the buttons.
＊ When pressing a button when it is locked, it
informs a locked status with a beep and 'Loc' is
displayed on the measurement indicator.
Speed button
5
Press to select the desired air speed.
Level 1→ Level 2 → Level 3
Tips
15
2 3
Circulation mode
button
- Brightness of the indicators and buttons is adjusted depending on
ambient illumination.
4
Light/Lock button Information
button
Circulation mode button
2
Press to select the desired circulation mode.
Normal → Front → Back
Information button
4
It checks the gas level of the current air
quality and ultrafine dust level.
Power button
6
Use the button to turn the product on and off.
＊ When the product is activated initially, the
directional airflow panel rises, and the product
is operated in the smart mode.
＊ If you turn off and on again, it will return to the
previous operation mode used before it stops.
＊ When the product is turned off, the directional
airflow panel is lowered and closed.
5
Speed button
6
Power button