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General safety guidelines for operating the air purifier, including usage restrictions and environmental considerations.
Instructions for safe placement and use of the power cord to prevent hazards like tripping or overheating.
Information on the air purifier's compliance with EMF standards and safe usage based on scientific evidence.
Explains the functions of the On/Off button, Wi-Fi indicator, and other control buttons for purifier operation.
Details the Air Quality Indicator Rings and the Fan Speed Button for monitoring air quality and adjusting fan settings.
Covers Sleep Mode, Auto Mode, Timer, Display Off, and Display Lock buttons for managing purifier modes and screen settings.
Instructions for resetting the Check Filter Indicator after filter maintenance.
Guidance on connecting the smart air purifier to Amazon Alexa or Google Assistant via the VeSync app.
Describes how Sleep Mode operates quietly with a reduced fan speed and how to manage the display.
Explains how Auto Mode uses the AirSight sensor to adjust fan speed based on detected air quality.
Details the PM2.5 display, its measurement units, and the Air Quality Indicator Chart.
Instructions for setting and managing the timer for automatic shut-off.
How to turn off the display and lock settings to prevent accidental changes.
Explains Standby Mode and how the purifier remembers settings when unplugged or turned off.
Overview of remote control, air quality updates, schedules, and filter replacement information via the VeSync app.
Describes the Pre-Filter's role in capturing large particles and protecting the main filter.
Details the H13 True HEPA filter's efficiency in capturing fine airborne particles and allergens.
Explains the Custom High-Efficiency Activated Carbon Filter's ability to adsorb odors, smoke, and VOCs.
Defines CADR and its significance in measuring air purifier performance and room coverage.
Explains ACH as a measure of how many times the air in a room is purified per hour.
Advises on humidity levels and warns against using essential oils with the purifier.
Instructions for cleaning the outside of the air purifier with a soft cloth.
Guidance on cleaning the removable pre-filter to maintain its efficiency and extend filter life.
Information on the Check Filter Indicator light and how to reset it after filter replacement.
Advises on when to replace the filter and signs indicating replacement is needed.
Instructions for cleaning the AirSight Plus Laser Dust Sensor to ensure accurate air quality readings.
Step-by-step guide on how to replace the air purifier filter.
Recommendations for storing the air purifier during extended periods of non-use to prevent damage.
Solutions for when the air purifier does not turn on or respond to button presses.
Troubleshooting steps for decreased airflow, unusual noise, and strange smells from the air purifier.
Solutions for poor air quality, filter indicator staying on, or not turning on as expected.
Explains persistent red or blue air quality indicators and potential causes like sensor issues or ultrasonic humidifiers.
Guidance for troubleshooting and resolving the 'E1' error code, often related to motor malfunction.
Steps to resolve connectivity issues between the air purifier and the VeSync mobile application.
Solutions for when the air purifier appears offline in the VeSync app, including checking power and network.
General safety guidelines for operating the air purifier, including usage restrictions and environmental considerations.
Instructions for safe placement and use of the power cord to prevent hazards like tripping or overheating.
Information on the air purifier's compliance with EMF standards and safe usage based on scientific evidence.
Explains the functions of the On/Off button, Wi-Fi indicator, and other control buttons for purifier operation.
Details the Air Quality Indicator Rings and the Fan Speed Button for monitoring air quality and adjusting fan settings.
Covers Sleep Mode, Auto Mode, Timer, Display Off, and Display Lock buttons for managing purifier modes and screen settings.
Instructions for resetting the Check Filter Indicator after filter maintenance.
Guidance on connecting the smart air purifier to Amazon Alexa or Google Assistant via the VeSync app.
Describes how Sleep Mode operates quietly with a reduced fan speed and how to manage the display.
Explains how Auto Mode uses the AirSight sensor to adjust fan speed based on detected air quality.
Details the PM2.5 display, its measurement units, and the Air Quality Indicator Chart.
Instructions for setting and managing the timer for automatic shut-off.
How to turn off the display and lock settings to prevent accidental changes.
Explains Standby Mode and how the purifier remembers settings when unplugged or turned off.
Overview of remote control, air quality updates, schedules, and filter replacement information via the VeSync app.
Describes the Pre-Filter's role in capturing large particles and protecting the main filter.
Details the H13 True HEPA filter's efficiency in capturing fine airborne particles and allergens.
Explains the Custom High-Efficiency Activated Carbon Filter's ability to adsorb odors, smoke, and VOCs.
Defines CADR and its significance in measuring air purifier performance and room coverage.
Explains ACH as a measure of how many times the air in a room is purified per hour.
Advises on humidity levels and warns against using essential oils with the purifier.
Instructions for cleaning the outside of the air purifier with a soft cloth.
Guidance on cleaning the removable pre-filter to maintain its efficiency and extend filter life.
Information on the Check Filter Indicator light and how to reset it after filter replacement.
Advises on when to replace the filter and signs indicating replacement is needed.
Instructions for cleaning the AirSight Plus Laser Dust Sensor to ensure accurate air quality readings.
Step-by-step guide on how to replace the air purifier filter.
Recommendations for storing the air purifier during extended periods of non-use to prevent damage.
Solutions for when the air purifier does not turn on or respond to button presses.
Troubleshooting steps for decreased airflow, unusual noise, and strange smells from the air purifier.
Solutions for poor air quality, filter indicator staying on, or not turning on as expected.
Explains persistent red or blue air quality indicators and potential causes like sensor issues or ultrasonic humidifiers.
Guidance for troubleshooting and resolving the 'E1' error code, often related to motor malfunction.
Steps to resolve connectivity issues between the air purifier and the VeSync mobile application.
Solutions for when the air purifier appears offline in the VeSync app, including checking power and network.
The Levoit VeSync Core™ 400S Smart True HEPA Air Purifier is designed to improve indoor air quality through a comprehensive 3-stage filtration system. This smart device offers a range of features for convenient and effective air purification, controllable both directly on the unit and remotely via the VeSync app.
The primary function of the Levoit VeSync Core™ 400S is to purify air by removing airborne particles and odors. It utilizes a 3-stage filtration system consisting of a Pre-Filter, an H13 True HEPA Filter, and a Custom High-Efficiency Activated Carbon Filter. The Pre-Filter captures large particles like dust, lint, fibers, hair, and pet fur, thereby extending the life of subsequent filters. The H13 True HEPA Filter is highly effective, capturing at least 99.97% of airborne particles as small as 0.3 microns, including fine dust, smoke particles, pollen, and pet dander. The Custom High-Efficiency Activated Carbon Filter, enhanced with Levoit's exclusive ARC Formula™, physically adsorbs smoke, odors, and fumes. The ARC Formula™ is specifically designed to tackle cooking smells and pet odors, chemically decomposing trapped molecules to prevent oversaturation and secondary pollution. This filter also targets compounds such as formaldehyde, benzene, ammonia, hydrogen sulfide, and volatile organic compounds (VOCs). The air purifier continuously monitors air quality using its AirSight™ Plus Laser Dust Sensor, which detects PM2.5 particles and adjusts fan speed accordingly in Auto Mode.
The Levoit VeSync Core™ 400S offers multiple modes and controls for tailored air purification. The On/Off Button powers the unit and can be used to configure the air purifier or reset its Wi-Fi connection by pressing and holding. Fan Speed Button allows users to cycle through low, medium, high, and turbo fan speeds, indicated by 1 to 4 lights. Turbo speed provides the quickest air cleaning, ideal for addressing specific air quality issues like smoke. The Air Quality Indicator Rings visually display the current air quality using a color-coded system: Blue (Very Good), Green (Good), Orange (Moderate), and Red (Bad), based on real-time PM2.5 detection.
Auto Mode leverages the AirSight™ Plus Laser Dust Sensor to automatically adjust fan speed based on detected air quality, ensuring efficient purification without constant manual intervention. For instance, if air quality is poor, the fan speed will automatically increase to high. The PM2.5/Timer Display shows the amount of airborne particles in micrograms per cubic meter (µg/m³), providing a clear indication of air quality. A lower number signifies better air quality, with values above 115 µg/m³ indicating an unhealthy level of fine particles.
Sleep Mode operates at a quieter fan speed, ideal for use during rest, and can be activated or deactivated with a dedicated button. The display automatically turns off after 3 seconds in Sleep Mode to minimize light disturbance. The Timer Button allows users to set an operating duration from 1 to 12 hours in 1-hour increments. The display will show the selected time before the timer starts counting down.
For enhanced control and convenience, the VeSync App provides remote access to all air purifier settings, even when the Display Lock is active. Through the app, users can view real-time PM2.5 updates, track air quality history for the past week, and create customized schedules to match their routines. The app also offers additional Auto Modes, including Quiet Auto Mode (which avoids high or turbo fan speeds for reduced noise) and Efficient Auto Mode (which purifies air for a designated time based on room size and then adjusts to detected air quality, useful for odor removal).
The Display Off Button turns off all display lights, including button lights, for an undisturbed environment. Tapping any button (except On/Off) temporarily reactivates the display. The Display Lock Button prevents accidental changes to settings by locking the display. When active, the Display Lock Indicator blinks if any other button is tapped, signaling that the controls are locked. This feature can be used even when the air purifier is in Standby Mode.
The device also features a Memory Function, which remembers the last fan speed, Sleep Mode, Auto Mode, Display Lock, and Display Off settings when plugged in and turned off. If unplugged, it retains the last fan speed, Sleep Mode, and Auto Mode settings.
Regular maintenance is crucial for optimal performance and filter longevity. The Check Filter Indicator lights up after approximately 12 months of use, signaling that the filter should be checked or replaced. This indicator's activation is based on a scientific algorithm that considers air quality, usage amount, and other factors, with a filter life percentage viewable in the VeSync app. Users receive notifications from VeSync when it's time to check the filter.
Cleaning the Smart Air Purifier involves unplugging the unit, wiping the exterior with a soft, dry or damp cloth, and vacuuming the inside. Abrasive chemicals or flammable cleaning agents should be avoided. The outer Pre-Filter should be cleaned every 2–4 weeks using a soft brush or vacuum hose to remove hair, dust, and large particles. This extends the life of the entire filter. The H13 True HEPA and Activated Carbon Filters, however, should not be cleaned with water or other liquids.
Resetting the Check Filter Indicator is necessary after replacing the filter. This involves pressing and holding the Check Filter Indicator Reset Button for 3 seconds until the indicator turns off. If the filter is changed before the indicator lights up, the same process is followed, and the indicator will flash before turning off.
The filter typically needs replacement every 12 months, though this can vary based on usage and air quality. Signs that a filter needs replacement include increased noise, decreased airflow, unusual odors, or a visibly clogged filter. Only official Levoit filters should be used to maintain performance.
The AirSight™ Plus Laser Dust Sensor also requires periodic cleaning, ideally every 3 months, or more frequently in dusty environments. This involves unplugging the air purifier and using a vacuum cleaner over the sensor openings for at least 10 seconds to remove dust, ensuring accurate air quality readings.
For long-term storage, the air purifier and filter should be wrapped in plastic packaging and stored in a dry place to prevent moisture damage.
General| Weight | 11 lbs / 5 kg |
|---|---|
| Smart Features | Yes |
| Coverage Area | 403 sq. ft. |
| Filter Type | True HEPA Filter, Activated Carbon Filter |
| Noise Level | 24-52 dB |
| Voice Control | Yes |
| App Control | Yes |
| Filter Life | 6-8 months |
| Voltage | 120V |
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