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Coway Air Purifier How to & Troubleshooting Guide

Coway Air Purifier How to & Troubleshooting Guide

Coway Airmega air purifiers are among the best in the market. They are powerful, effective, and stylish, and with five different models on offer, users can choose one that suits their needs.

But being smart appliances, users may have trouble getting around these machines. They may also occasionally “act up”, needing some troubleshooting.

While some of the issues are simple DIYs that one can clear easily, some problems may require you to contact the service center.  

If you are having problems with your Coway air purifier, here is an easy-to-follow troubleshooting guide that will hopefully help you clear them.

How to clean a Coway air purifier

Before you start cleaning your air purifier, always make sure you unplug the power. Do not use detergents containing organic solvents, bleach, chlorine, or abrasives to clean. Also, do not immerse the purifier in water or sprinkle water on it.

To clean the vent and detachable vent grille:

  • Lift the detachable vent grille on top of the vent.
  • Then use a soft brush or vacuum cleaner to clean the grill and vent.
  • Take care not to allow dust to enter the vent while cleaning.

To clean the air quality sensor:

  • You should clean this part every two months or more regularly in very dusty environments.
  • Use a soft brush or vacuum cleaner to clean the air quality sensor air inlet and vent. Be careful not to let dust fall inside the purifier while cleaning.
  • Use the slots to open the air quality sensor cover on the upper rear of the purifier.

To clean the front cover:

  • Remove the front cover from the purifier.
  • Then use a soft, dry cloth or soft brush to wipe away dust stuck to the surface.
  • You can use damp cloth if there’s severe contamination.

To clean the purifier body:

  • Wipe with a soft, dry cloth.
  • You can use a damp cloth if the contamination is severe, but don’t use abrasives.

To clean the pre-filter:

  • Pull the upper part of the front cover to open.
  • Pull the pre-filter handle to take it out.
  • Depending on the severity of the contamination, use water or a vacuum cleaner to remove dust.
  • Then push the completely dry pre-filter all the way into the purifier to install it. Close the front cover again.
  • Clean this part every 2-4 weeks.

How to install a filter

Coway air purifiers use three filters; a pre-filter that removes large dust and mold, a deodorization filter that removes odors, and a HEPA filter that removes cigarette smoke and fine dust.

To install the filters:

  • Pull the upper part of the front cover to open.
  • Take out the filters and remove the plastic packaging, excluding the pre-filter.
  • Assemble the filters in the purifier starting with the HEPA filter, then deodorizing filter, and finally the pre-filter.
  • Then fit the two tabs on the bottom part of the front cover into their slots and push to install back the front cover.

How to change filters on a Coway air purifier

The filters should be replaced every 12 months, but the replacement cycle may vary depending on the usage environment. It is recommended you use genuine Coway filters to keep the purifier at its optimal performance.

To change the deodorizing/HEPA filters:

  • Open the front cover and remove the pre-filter from the purifier.
  • Then take out the deodorizing filter and HEPA filter.
  • Replace them with a new deodorizing filter and new HEPA filter with the plastic packaging removed.
  • Reassemble the purifier in the reverse order you disassembled it and close the front cover

Coway air purifier light color meaning

Indoor air contamination can be determined by the color of the round lamp located at the top of the purifier. Depending on your Coway air purifier models, here are what the different colors mean:

  • Blue color means clean.
  • Green color (for some models) means slight.
  • Yellow color (for some models) means heavy.
  • Dark purple (for some models) means polluted.
  • A Red LED indicator means severe or highly polluted.
coway air purifier problems

Coway air purifier red light always on fix

If the air quality stays at severe (red) even after the purifier runs for more than 2 hours, you can try fixing this by adjusting the particle sensor. To adjust the sensitivity of the pollution sensor:

  • Press and hold the airflow speed button and ionizer button (or mode button depending on your purifier model) simultaneously for about 2 seconds second while the purifier is running.
  • The speed indicator will flash at about 1.0 seconds intervals with a beep. The speed indicator blinks to show the sensor sensitivity.
  • Adjust the sensitivity by pressing the speed button. The speed indicator blinks to show the sensor sensitivity as follows: speed step 1-sensitive, speed step 2-standard, speed step 3-insensitive.
  • Press the airflow speed button and ionizer (or mode) buttons simultaneously for about 2 seconds again. The air purifier will then resume normal operations.
  • Note that if the airflow speed button and ionizer button are not pressed for 10 seconds after selecting sensitivity, the selected sensitivity is automatically input.

How to set up a Coway air purifier

When the air purifier is plugged into the electric outlet and turned on, it automatically operates in auto mode.

To operate manually:

  • Press the power button to turn on the purifier.
  • Press the speed button to choose the speed of the fan you desire.

To operate automatically:

  • Press the speed button to activate auto mode. Repeat pressing the button until Eco mode indicator is on.
  • Auto mode operates effectively by automatically adjusting the speed from 1-3, depending on the indoor pollution level the sensor detects.
  • Eco mode automatically stops the fan to save energy consumption when the air stays clean for 30 minutes.

Timer activation/deactivation

The timer instructs the air purifier to power off automatically after 1, 4, or 8 hours. To deactivate the timer:

  • Press and hold the timer button until the indicator is no longer lit.

How do I reset my Coway air purifier?

The reset indicator blinks when the filter needs to be replaced. If the odor LED blinks the deodorization filter needs to be replaced. If HEPA LED blinks then the HEPA filter needs to be replaced.

Check this too: Best Air Purifier For Bacteria and Viruses

The pollution level indicator will not turn off if the filter replacement indicator is activated. To reset the filter replacement indicator:

  • Push the reset button for 2 seconds after replacing the filter.

You can also forcibly reset the filter replacement cycle back to the factory default setting when you have replaced a filter before the filter replacement cycle is reached. For forcible reset mode:

  • When the reset function isn’t activated, press and hold the reset button for 2 seconds.
  • Press the reset button to select the filter you want to forcibly reset. Press once for odor LED (deodorizing filter). Press twice for HEPA LED (HEPA filter).
  • After selecting the filter to reset, press and hold the reset button for 2 seconds. And then, the accumulated time in the electronic time counter is erased.
  • Note that in forcible reset mode, the reset mode is canceled if there is no input for 5 seconds.

Why is there no air blowing in my Coway air purifier

If no air is blowing it could either be the purifier isn’t powered or the front cover is not closed. Check if the power cord is connected and there is power.

Check whether the display part is turned off. Make sure you close the front cover properly.

Bad smell coming out of the air outlet fix

If a bad smell comes out of the air outlet, check the filter cleaning and replacement cycles. Clean or replace the filters if necessary.

Where to place a Coway air purifier

A Coway air purifier needs to be placed where there are no obstacles blocking the circulation of air around it. It should be placed where it is not exposed to direct sunlight. As a safety precaution, don’t put the air purifier in the following places:

  • Do not install it near a heating device.
  • Do not place the air purifier in water.
  • Do not install in locations exposed to moisture or water (rainwater).
  • Do not use it in places where flammable gases or combustible materials are used or stored.
  • Don’t install the purifier on a sloped surface.