Model Handbook

Coway error codes and indicator lights

Each table applies only to the model named above it.

Coway Airmega 400S, 400, 300S and 300 air purifiers

IndicatorMeaning on Airmega 400
[Pre Wash] indicatorThe pre-filters need cleaning. On the 400S and 400 the button also shows the pre-filter cleaning cycle in levels from 100% down to 0%.
[Max2 Change] indicatorThe Max2 filters need replacing. On the 400S and 400 the button also shows the filter life in levels from 100% down to 0%.
Wi-Fi indicatorWi-Fi connection state of the Airmega 400S and 300S.
Air quality indicator colourPollution level around the purifier. 400S and 300S: blue and green is Good, green and yellow Moderate, yellow and pink Unhealthy, pink and red Very Unhealthy. 400 and 300: blue is Good, purple Moderate, pink Unhealthy, red Very Unhealthy.

Coway Airmega Mighty AP-1512HH air purifier

IndicatorMeaning on AP-1512HH
Filter replacement indicatorA filter has reached its replacement cycle. The Odor LED means the deodorization filter and the HEPA LED means the True HEPA filter. While this indicator is active, the pollution level indicator does not light.
Air quality indicator colourThe colour shows the current pollution level of the room.