How To Reset Coway Air Purifier

The air purifier has been a much more present appliance in every household. And now, it is a permanent cleaner tool for houses. Your Coway air purifier is one of the modern technology that is continuously upgraded mainly for health benefits and comfort living.

But, your Coway air purifier is malfunctioning, and you're trying to reset it, but how? Don't worry! Stay on the page to discover the reset procedure for your Coway air purifier recommended by appliance technicians and experts.

You reset the Coway air purifier after replacing the filters, deodorization, and HEPA filters. There's also a need for a force reset after you've changed the filter before the replacement cycle to put it to the factory default setting.

Follow the steps on how to reset your Coway air purifier:


  1. After the filter replacement, plug back in the air purifier to turn it on.
  2. Press the filter reset button to choose the filter you've replaced.
  3. Hold and press the reset button again for 2 seconds.

Force Reset

  1. Press and hold the filter reset button for 2 seconds.
  2. Press the filter reset button to choose the filter you want to force reset. The first press is for the deodorization filter. The second press is for the HEPA filter.
  3. Press and hold the filter reset button for 2 seconds.

Now, resetting your Coway air purifier doesn't seem so out of hand. But, there's more to it than resetting your appliance. Be familiar with the functions and parts of your Coway air purifier.

How about cleaning your Coway pre-filter and so on? Continue reading for more troubleshooting guides and maintenance tips for your Coway air purifier. 

A coway air dispenser in a shopping mall, How To Reset Coway Air Purifier

Resetting Coway Air Purifier

Before resetting, you should know the types of filters your Coway air purifier has. There are three filters in your Coway air purifier, the pre-filter, deodorization filter, and HEPA filter.

The pre-filter is washable every 2-4 weeks. The deodorization and the HEPA filter are replaceable every 6-12 months. It depends on the amount of usage and environment setting.

You can buy the replaceable filters conveniently at your local store. You can clean the pre-filter with a vacuum or rinse it with water.


When the filter reset button flickers, it means you need to replace the filter. Otherwise, the pollution level indicator will not function. It is advisable to use original Coway filters in replacement for continuous work efficiency.

Following the steps ensure proper replacement of the deodorization and HEPA filters. Make sure to unplug the unit before opening the case of your air purifier.

Move your air purifier to a spacious working or cleaning area because you expect to remove dirty filters.

How To Clean The Coway Pre-Filter

You must also clean your Coway pre-filter before resetting your unit for a clean cycle. Follow these steps to clean your Coway pre-filter:

  1. Open the front case by pulling the top side of the case.
  2. Gently detach the pre-filter cover to prevent the dust particles from falling off. Other model pre-filters can be taken out effortlessly by pulling its handle. 
  3. Remove the pre-filter.
  4. Use a vacuum or gently rinse under water to clean the pre-filter.
  5. Thoroughly dry the pre-filter.
  6. Put the pre-filter back with its cover by gently attaching the cover to the main body.

How To Replace Coway Deodorization/HEPA Filters

HEPA (High-efficiency particulate air

You must follow proper filter replacement to avoid damage or malfunction to your Coway air purifier. Here's what to do when replacing the deodorization/HEPA filters:

  1. Unplug the Coway air purifier.
  2.  Remove the front cover and the pre-filter.
  3. Take out the deodorization and HEPA filters.
  4. Remove the plastic packaging of the new replaceable deodorization and HEPA filters.
  5. Install the new ones in the air purifier, the same slot where you removed the old filters.
  6. Put back the pre-filter and the cover.

Click here to view this Coway air purifier replacement on Amazon.

Find out more ways to maintain your air purifier filters in these posts: How Long Does A HEPA Filter Last? How Long Should You Run A HEPA Filter?

Force Reset

You force reset your Coway air purifier when you decide to change the filters even before the set time for a replacement. It may be that you use your air purifier in a dusty area, or many people use the room where you place your air purifier.

It is to turn the unit to its factory default setting. Then, wait for the reset indicator to flash again for the next filter replacement. You can also change the filters again if you think the filters are clogged or too dirty before the set time.

Maintenance Tips

Disassembled air purifier

Managing your Coway air purifier will help it work efficiently and last longer. Knowing the button function will help in tending to your air purifier. It has different indicators to fulfill for continuous usage and functions of the unit. Here are some tips on how to maintain your Coway air purifier:

  • Replace the replacement filter at the recommended time or as soon as the filter is full of fust.
  • Be watchful of the indicators to know what procedure to apply.
  • Remove the packaging of the filters inside the air purifier when newly bought and install it back.
  • Don't put anything on top of your air purifier.
  • Completely dry the pre-filter before re-installing.
  • Pre-order filter replacements if you think it's about soon to replace them.
  • Regularly clean and dust off the main body and other parts of your Coway air purifier.
  • Keep your Coway air purifier manual in case of malfunctions and repair.
  • Use the air purifier indoors only.
  • Follow proper installation and re-installation.

How Do You Clean A Coway Sensor?

It is advisable to clean the Coway sensor every two months or as often as needed. You will need a soft brush or a vacuum cleaner to clean the sensor regularly. It is to prevent deterioration. Find out the steps to clean the Coway sensor below:

  1. Open the cover of the air quality sensor located on the right-hand side of the unit.
  2. Use a soft brush or a vacuum cleaner to clean the air inlet, the outlet vent, and the sensor.
  3. Moisten a cotton swab to clean the lens, the dust inlet, and the dust outlet.
  4. Wipe and dry them using a dry cotton swab.

What Do The Lights Mean On Coway Air Purifier?

Coway air purifier near wall

The round lamp at the top of a Coway air purifier calculates the contamination level in the room. Look at the unit's different colors and their meaning. Take note that Coway has various models of air purifiers.

  • Blue - the air is clean.
  • Green [depends on the model] - the air is slightly clean.
  • Yellow [depends on the model] - the air is heavy with dust.
  • Dark purple [depends on the model] - the air is polluted.
  • Red - the air is highly polluted.

Why Does Coway Turn Red?

Red light in the air quality indicator of your Coway air purifier means the air is highly contaminated. If it does not turn off after a few hours of purifying the room, check the other things on your Coway air purifier as listed below. Take note that Coway has different models of air purifiers.

  1. See if there's dust accumulated on the pollution sensor's lens. If there is, clean it properly.
  2. Alter the pollution sensor sensitivity to insensitive or standard.

Why Is My Coway Blinking?

Coway air purifier

There may be different reasons depending on the model and the light colors if your Coway air purifier is unusually blinking. Check below what can be the reason for your Coway blinking indicators:

  1. See if your unit is 220V or 120V. Plugging your unit into an incorrect voltage outlet can cause the blinking.
  2. The motherboard can be dead after getting in contact with a strong magnet. Call Coway's customer service.
  3. Make sure to remove the filter packaging when setting up your new Coway air purifier. It may also cause noise upon turning it on.
  4. If still not resolved, don't take any major fix steps to your unit's system. Call Coways' customer support immediately.

In Closing

It's essential to be well-adept in resetting your Coway air purifier. You will do it every time you replace the air purifier filters.

After properly replacing the filters, reset the unit by pressing and holding the filter reset button for a few seconds. It should be running back well to filter the air in your house for the best comfort and living possible.

Read these posts to know more about how to better air purify your house:

Can You Use An Air Purifier And Humidifier Together? 

How To Use Nature Fresh Air Purifier Bags

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