Coway airmega 400 sensor location
About every 2 months.
Steps
- Unplug the air purifier.
- Lift and pull the upper part of the front cover to remove it.
- Hold the upper part of the pollution sensor cover and remove it.
CAUTION
Do not use water. If you use it accidentally, make sure to remove any moisture completely.
Marked CAUTION by the manufacturer Source: Pollution Sensor, p. 24
- Wipe the lens, the dust inlet and the dust outlet with a dry cotton swab.
- Push the pollution sensor cover until it clicks into place, then fit the front cover into the grooves at the bottom and push it into place.
Source: Pollution Sensor Source: Pollution Sensor, p. 24
Used for
Other Airmega 400 procedures
- How to clean the pre-filtersWhen the [Pre Wash] indicator is lit, about every 2 weeks.
- How to replace the Max2 filtersWhen the [Max2 Change] indicator is lit, about every 12 months.
- How to adjust the pollution sensor sensitivityWhen the pollution level stays Very unhealthy after more than two hours, or stays Good for more than an hour in a polluted environment.
Sources
- User Manual, Air Purifier 400S/400/300S/300 (English, French). Coway. Document 1216776, revision 003, 88 pages, en-US. cowaymega.com. Listed on the manufacturer's support page. Retrieved 13 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.