Model Handbook

Coway Airmega 400 no air comes out from the air outlet

Cause 1 of 4The power plug is not connected. Source: Troubleshooting, p. 25

First checkConnect the power plug to an AC outlet (120 V~ 60 Hz).

Causes and checks

  1. The power plug is not connected. Source: Troubleshooting, p. 25

    1. Connect the power plug to an AC outlet (120 V~ 60 Hz).

  2. All indicators are off. Source: Troubleshooting, p. 25

    1. Touch the [Power] button to turn on the product.

  3. A power failure occurred. Source: Troubleshooting, p. 25

    1. Wait until the power is restored, then try to use the product.

  4. The right and left covers are installed incorrectly. The product does not turn on in that case. Source: How to replace the Max2 Filter, p. 21

    1. Refit the covers on both sides correctly.

Service

If the checks above do not clear it, contact Coway customer service: 1-800-285-0982, cowaymega.com. United States (warranty service, 8:00 am to 5:00 pm PT, Monday to Friday). Source: Limited Warranty, p. 28

Other Airmega 400 problems

Sources

  1. 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.

Applies to
AP-2015E (variant AP-2015E(SILVER_US)), AP-2015F (variant AP-2015F(SILVER_US)), AP-1515G, AP-1515H. United States.
Source
User Manual, Air Purifier 400S/400/300S/300 (English, French), 1216776 revision 003
Last verified
Handbook
Coway Airmega 400S, 400, 300S and 300 air purifiers in Air purifiers; all Coway handbooks