Levoit core 400s filter reset
After replacing the filter while the indicator is lit, or after replacing it before the indicator lit.
Steps
- Replace the filter if the indicator is lit. See Replace the filter.
- Turn on the air purifier.
- Press and hold the Check Filter Indicator Reset button for 3 seconds.
- Check that the indicator turns off.
If the filter was replaced before the indicator lit: press and hold the Check Filter Indicator Reset button for 3 seconds. The indicator flashes for 3 seconds and then turns off.
Source: Care & Maintenance Source: Care & Maintenance, p. 12
Used for
- Check Filter Indicator: A reminder to check the filter. It should turn on at about 12 months, sooner if you run the purifier frequently and later if you do not use it often.
Other Core 400S procedures
- How to replace the filterWhen the Check Filter Indicator lights and the filter is clogged, noisy or loses airflow, or every 12 months.
- How to clean the pre-filterEvery 2 to 4 weeks.
- How to clean the AirSight Plus Laser Dust SensorEvery 3 months, or when the air quality ring stays red. More often in a dusty environment.
- How to disconnect from Wi-Fi and restore defaultsTo restore the purifier's default settings and disconnect it from the VeSync app.
Sources
- User Manual, Core 400S smart air purifier. Arovast Corporation. Document HEAPAPLVSUS0162Y, revision A1-241202, 24 pages, en-US. levoit.com (PDF). 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.