LEVOIT VESYNC CORE PRO CORE 400S LAP C401S WUSR User Manual

USER MANUAL  
VeSync Core™ Pro 400S  
PlasmaPro Smart Air Purifier  
Product Series: Core 400S  
Model: LAP-C401S-WUSR  
Questions or Concerns?  
Please contact us Mon–Fri, 9:00 am–5:00 pm PST/PDT  
at [email protected] or at (888) 726-8520.  
READ AND SAVE THESE  
INSTRUCTIONS  
SAFETY INFORMATION  
To reduce the risk of fire, electric shock, or other injury, follow all instructions and safety  
guidelines.  
WARNING: To reduce the risk of fire or  
electric shock, do not use this air purifier  
with any solid-state speed controls (such  
as a dimmer switch).  
General Safety  
Only use your air purifier as described in  
this manual.  
Children should not clean or perform  
maintenance on the air purifier without  
supervision.  
Do not use without removing the plastic  
wrap from the filter. The air purifier will not  
filter air, and may overheat, causing a fire  
hazard.  
This air purifier is not to be used by  
persons (including children) with reduced  
physical, sensory, or mental capacities,  
or lack of experience and knowledge,  
unless they have been given supervision  
or instruction concerning the use of the  
appliance by a person responsible for the  
safety.  
Do not use the air purifier outdoors.  
Keep the air purifier away from water, and  
wet or damp areas. Never place in water  
or liquid.  
Do not use in excessively humid areas.  
Keep the air purifier away from heat  
sources.  
Not for commercial use. Household use  
only.  
Do not use where combustible gases,  
vapors, metallic dust, aerosol (spray)  
products, or fumes from industrial oil are  
present.  
Power & Cord  
Keep 5 ft / 1.5 m away from where oxygen  
is being administered.  
Keep the air purifier near the outlet it is  
plugged into.  
Supervise children when they are near the  
air purifier.  
Never place the cord near any heat  
source.  
Do not place anything into any opening in  
the air purifier.  
Do not cover the cord with a rug, carpet,  
or other covering. Do not place the cord  
under furniture or appliances.  
Do not sit on or place heavy objects on  
the air purifier.  
Keep the inside of the air purifier dry. To  
prevent moisture buildup, avoid placing in  
rooms with major temperature changes or  
underneath air conditioners.  
Keep the cord out of areas where people  
walk often. Place the cord where it will not  
be tripped over.  
This air purifier has a polarized plug (one  
blade is wider than the other). To reduce  
the risk of electric shock, this plug is  
intended to fit in a polarized outlet only  
one way. If the plug does not fit fully in the  
outlet, reverse the plug. If it still does not  
fit, contact a qualified electrician. Do not  
attempt to defeat this safety feature.  
Always unplug the air purifier before  
servicing (such as changing the filter).  
Do not use the air purifier if it is damaged  
or not working correctly, or if the cord or  
plug is damaged. Do not try to repair it  
yourself. Contact Customer Support (see  
page 22).  
3
SAFETY INFORMATION (CONT.)  
This air purifier uses standard North  
American 120V, 60Hz outlets. If using  
outside the US or Canada, check for  
compatibility.  
If the power supply cord is damaged, it  
must be replaced by Arovast Corporation  
or similarly qualified persons in order to  
avoid an electric or fire hazard. Please  
contact Customer Support (page 22).  
Electromagnetic Fields (EMF)  
Your Levoit air purifier complies with all  
standards regarding electromagnetic fields  
(EMF). If handled properly and according to the  
instructions in this user manual, the appliance  
is safe to use based on scientific evidence  
available today.  
GETTING TO KNOW YOUR SMART AIR PURIFIER  
A. Fan Speed Indicators  
B. Fan Speed Button  
C. Sleep Mode Button  
D. Air Quality Indicator Rings  
E. Plasma Button  
L. Display Off Button  
M. Display Lock Indicator  
N. Display Lock Button  
O. Air Outlets  
P. Housing  
F. Check Filter Indicator  
G. Timer Button  
H. On/Off Button  
Q. Air Inlets  
R. AirSight Plus™ Laser Dust Sensor  
S. Anti-Skid Pads  
I. Wi-Fi® Indicator  
T. Filter Cover  
J. Auto Mode Button  
K. PM2.5/Timer Display  
U. True HEPA 3-Stage Original Filter  
A
I
B
C
D
J
K
S
T
E
F
L
M
N
G
H
U
O
P
R
Q
Back  
Front, upside down  
5
CONTROLS & DISPLAY  
Timer Button  
On/Off Button  
Cycles through timer  
options (see page 10).  
Turns the air purifier on/off.  
Press and hold to configure  
the air purifier. See the  
VeSync in-app instructions  
for more information.  
Press and hold  
for 2  
seconds to begin cycling  
through the timer options in  
1-hour increments.  
Press and hold to reset the  
air purifier and disconnect  
from Wi-Fi (see page __).  
Auto Mode Button  
Turns Auto Mode on/off  
(see page 9).  
Air Quality Indicator Rings  
These indicators use an  
automatic sensor to display  
the air quality: Blue (Very  
Good), Green (Good),  
Orange (Moderate), and  
Red (Bad).  
Display Off Button  
Turns the display off (see  
page 10).  
Tap any button (except  
)
to turn the display back on.  
Wi-Fi® Indicator  
Turns on, off, or blinks to  
indicate pairing status.  
See the VeSync in-app  
instructions for more  
information.  
Display Lock Button  
Prevents current settings  
from being changed (see  
page 10). Press and hold for  
3 seconds to turn Display  
Lock on/off.  
Fan Speed Button  
The Display Lock Indicator  
Cycles through fan speeds:  
low (1 indicator will light up),  
medium (2 indicators), high  
(3 indicators), and turbo  
(4 indicators).  
(
) will blink when any  
other button is tapped to  
indicate that Display Lock  
is on.  
Tapping the Fan Speed  
Button while the air purifier  
is in Auto Mode or Sleep  
Mode (if the display is on)  
will exit that mode.  
Plasma Button  
Turns the Plasma function  
on/off (see page 11).  
Sleep Mode Button  
Turns Sleep Mode on/off  
(see page 9).  
Press and hold for 3 seconds  
to reset the Check Filter  
Indicator (see page 15).  
6
GETTING STARTED  
3. Replace the filter cover and twist  
1. Flip the air purifier over or turn it on its side.  
Twist the filter cover counterclockwise and  
remove it. [Figure 1.1]  
clockwise to lock. [Figure 1.3]  
cover should  
snap shut  
Figure 1.3  
Figure 1.1  
2. Remove the filter from its plastic  
packaging and place the filter back into  
the air purifier. [Figure 1.2]  
4. Place the purifier on a flat, stable surface  
with the display facing up. Allow at least  
15 inches / 38 cm of clearance on all  
sides. Keep away from anything that  
would block airflow, such as curtains.  
[Figure 1.4]  
15 in /  
38 cm  
15 in /  
38 cm  
Figure 1.4  
Figure 1.2  
7
VeSync App Setup  
USING YOUR SMART  
AIR PURIFIER  
Note: Using the VeSync app allows you to control  
your air purifier remotely and access additional  
functions and features.  
1. To download the VeSync app, scan the  
QR code or search “VeSync” in the Apple  
App Store® or Google Play Store.  
2. Open the VeSync app. Log In or Sign Up.  
3. Follow the in-app instructions to set up  
1. Plug in and tap  
to turn on the air  
your smart air purifier.  
purifier. The fan will start on low speed.  
[Figure 2.1]  
2. Optionally, tap  
to change fan speed  
between low, medium, high, and turbo.  
Note:  
The fan speed indicators will light up  
when active. 1 indicator will light up for  
low, 2 for medium, 3 for high, and 4 for  
turbo.  
Turbo speed is the loudest, but cleans  
air the quickest.  
For best results, or to address a specific  
air quality issue such as smoke, run the  
air purifier at turbo speed for 15–20  
minutes before using a lower speed.  
Note:  
To disconnect Wi-Fi, press and hold the  
On/Off button for 15 seconds until the Wi-Fi  
indicator turns off. This will restore the smart  
air purifier’s default settings and disconnect  
it from the VeSync app.  
To effectively clean air, keep windows  
and doors closed while the air purifier  
is on.  
To reconnect, please follow the instructions  
in the VeSync app for adding a device.  
3. Tap  
to turn off the air purifier.  
Connect with Amazon Alexa or  
Google Assistant™  
You can use the VeSync app to connect  
your smart air purifier to Amazon Alexa or  
Google Assistant™. Please follow the in-app  
instructions to set up your voice assistant.  
Note: You must create your own VeSync account  
to access voice assistants.  
Figure 2.1  
8
USING YOUR PURIFIER (CONT.)  
Sleep Mode  
Note:  
The air purifier will take 5 seconds  
to detect the air quality each time it  
is turned on. During this time, the air  
quality indicator rings will be blue. After  
5 seconds, the air quality indicator  
rings will change color based on the  
detected air quality.  
Sleep Mode operates quietly by using a fan  
speed lower than low speed.  
1. Tap  
to turn Sleep Mode on/off.  
2. Sleep Mode will turn off the display after  
3 seconds if no other buttons are tapped.  
Auto Mode does not use the turbo fan  
speed.  
Note:  
The VeSync app also supports  
additional auto modes: Quiet Auto  
Mode and Efficient Auto Mode (see  
page 11).  
When the display is turned off, tap any  
button (except ) to turn the display  
back on. If you don’t tap another  
button, the display will turn off again  
after 3 seconds.  
The Check Filter Indicator will still turn  
on and stay on if it’s time to check your  
filter (see page 15).  
PM2.5 Display  
The PM2.5 value on the display shows the  
amount of airborne particles (µg) that are  
detected per 1 cubic meter (m³) of air volume.  
You cannot use the plasma function  
during Sleep Mode.  
The Sleep Mode button is also used  
to reset the Check Filter Indicator  
(see page 15). Press and hold for 3  
seconds.  
PM2.5 refers to particulate matter (PM) that  
is less than or equal to 2.5 microns (µm) in  
diameter. These particles, also known as  
“fine particles”, are so small that they can only  
be detected with an electron microscope,  
and they stay in the air longer than heavier  
particles such as dust and mold.  
Auto Mode  
Auto Mode uses AirSight Plus™, a smart  
laser dust sensor inside the air purifier, to  
adjust the fan speed automatically based on  
air quality. For example, if the air quality is  
bad, the fan will automatically be set to high  
speed.  
Your air purifier’s AirSight Plus Laser Dust  
Sensor detects the amount of PM2.5 particles  
that are in a given space (µg/m³). Generally,  
the lower the number, the better your air  
quality. A number above 115 indicates that  
there is an unhealthy amount of fine particles  
in the air.  
Air Quality Indicator Chart  
Indicator  
Color  
Air  
Quality  
Auto Mode  
Fan Speed  
PM2.5 Range  
Blue  
Very Good  
Sleep Mode  
0–35 ug/m3  
Green  
Orange  
Red  
Good  
Moderate  
Bad  
Low  
Medium  
High  
36–75 ug/m3  
76–115 ug/m3  
> 115 ug/m3  
9
USING YOUR PURIFIER (CONT.)  
Timer  
Display Off  
You can set a timer for 1–12 hours.  
This turns off the display lights on the air  
purifier, including button lights and indicator  
lights (except the Check Filter Indicator).  
1. Tap  
. The display will switch from  
showing the PM2.5 reading to the time  
you’ve selected.  
1. Tap  
to turn off the display.  
2. Tap  
repeatedly to select a time in  
1-hour increments. If you don’t touch any  
buttons for 5 seconds, the display will  
switch to showing the PM2.5 reading and  
the timer will start automatically.  
2. Tap any button (except  
or  
) to  
temporarily turn the display back on. If  
you don’t tap another button, the display  
will turn back off after 3 seconds.  
3. Tap  
to turn the display back on. The  
display will stay on.  
Note: Press and hold  
cycle through timer options automatically in  
1-hour increments.  
for 2 seconds to  
Note: The Check Filter Indicator will still turn  
on and stay on if it’s time to check your filter  
(see page 15).  
3. The timer will count down from your  
selected time.  
Display Lock  
Note:  
While a timer is active, tapping  
will  
When the air purifier is on, you can lock  
the display to prevent settings from being  
accidentally changed. Buttons will not  
respond to being tapped.  
show the remaining time, rounded up to  
the nearest hour. Tap  
again within  
5 seconds to add more time in 1-hour  
increments.  
1. Press and hold  
for 3 seconds to lock  
indicator will light up  
You can see the exact remaining time in  
the VeSync app.  
the display. The  
in the center of the display.  
4. When the timer is finished, the air purifier  
Note: If the display is turned off, the  
indicator will flash 3 times to show that the  
display has been locked, then turn off.  
will turn off.  
5. To cancel a timer, tap  
repeatedly until  
the display reads “--H”.  
2. The  
indicator will blink when any  
other button is tapped to indicate that  
Display Lock is on.  
Note:  
You can change the fan speed at any  
time while the timer is on.  
3. Tap and hold  
again for 3 seconds to  
The timer will restart if the time is  
changed.  
unlock the display. The  
turn off.  
indicator will  
The air purifier will remember the last  
timer setting while turned off, but the  
timer will be cancelled and need to be  
restarted.  
Note:  
If the display is turned off, the  
indicator will flash 3 times to show that  
the display has been unlocked.  
You can set a timer for 1–24 hours in  
the VeSync app.  
Display Lock can still be used when the  
air purifier is in Standby Mode.  
10  
USING YOUR PURIFIER (CONT.)  
VeSync App Functions  
The VeSync app allows you to access  
additional smart air purifier functions,  
including those listed below. As the app  
develops, more features may become  
available.  
Standby Mode  
The air purifier is in Standby Mode when it is  
turned off, but plugged in.  
Note: Display Lock can be used while the  
air purifier is in Standby Mode to keep  
the air purifier from being turned back  
on. The laser dust sensor will still detect  
the surrounding air quality and give you  
updates in the VeSync app.  
Remote Control  
Change any air purifier settings  
through the app, even while Display  
Lock is on.  
Air Quality Updates  
Memory Function  
View real-time PM2.5 updates in the  
app.  
When the air purifier is plugged in and turned  
off, it will remember its previous fan speed,  
Sleep Mode, Auto Mode, Display Lock,  
Display Off, and Plasma settings.  
See your air quality history for the  
previous week.  
When you unplug the air purifier, it will only  
remember its previous fan speed, Sleep  
Mode, and Auto Mode.  
Auto Mode  
Access additional Auto Modes: Quiet  
Auto Mode and Efficient Auto Mode.  
Note: The air purifier will remember the last  
timer setting chosen (1–12 hours), but it will not  
automatically resume the timer. You will need  
to restart the timer after the air purifier is turned  
back on.  
Quiet Auto Mode uses medium fan  
speed instead of the high or turbo  
fan speeds, even when the air quality  
is poor, to avoid making too much  
noise.  
Efficient Auto Mode lets you choose  
the size of the area you want to  
purify. The air purifier will use the  
highest fan speed (turbo) to clean the  
air for a designated amount of time.  
This time is based on ACH 1 and the  
size of the room, meaning how long  
it takes for the air purifier to clean  
all the air in your room one time,  
regardless of the air quality. After this,  
the mode will adjust the fan speed  
according to the actual detected air  
quality in the room.  
Plasma Function  
The plasma function uses PlasmaPro™  
technology to generate positive and negative  
ions that bind with pollutants and neutralize  
them by breaking down their molecular  
structure.  
This helps neutralize particulate matter,  
odorous gases, aerosols, and volatile organic  
compounds (VOCs).  
Note: You cannot use the plasma function  
during Sleep Mode.  
Note: Efficient Auto Mode is useful for  
purifying odors from the air. The air purifier’s  
sensor can only detect particles in the  
air, not smells. Efficient Auto Mode does  
not rely on the sensor, but the room size  
instead.  
11  
USING YOUR PURIFIER (CONT.)  
Schedules  
Create and customize schedules  
for your air purifier to match your  
routines.  
Timer Function  
Set a timer between 1–24 hours.  
Easily view the exact time remaining  
on a timer.  
Filter Replacement Info  
Keep tabs on the remaining filter life  
by checking the filter life percentage  
in the app.  
Shop for replacement filters.  
12  
ABOUT THE FILTER  
The air purifier uses a 3-stage filtration  
system to purify air.  
A
B
C
C. Custom High-Efficiency Activated  
A. Pre-Filter  
Carbon Filter  
Captures large particles such as dust,  
lint, fibers, hair, and pet fur.  
Physically adsorbs smoke, odors, and  
fumes.  
Maximizes the filter’s life by  
protecting it.  
Customized using Levoit’s exclusive  
ARC Formula™ to be especially  
effective for cooking smells and pet  
odors in a multi-pet household.  
B. H13 True HEPA Filter  
Captures at least 99.97% of airborne  
particles 0.3 microns (µm) in size.  
The ARC Formula extends the life of  
the filter by chemically decomposing  
molecules trapped within the  
Activated Carbon Filter, which  
prevents oversaturation and second-  
hand pollution.  
Traps small particles such as fine  
dust, smoke particles, and allergens  
such as pollen and pet dander.  
Filters compounds such as  
formaldehyde, benzene, ammonia,  
hydrogen sulfide, and volatile organic  
compounds (VOCs).  
Note: This air purifier includes an optional Plasma Function, which is a 4th filtration stage that helps  
neutralize some pollutants (see page 11).  
13  
ABOUT THE FILTER (CONT.)  
Clean Air Delivery Rate  
Humidity  
This air purifier has a Clean Air Delivery Rate of  
260 cubic feet per minute (CFM), or 442 m³/h.  
Moisture may damage the filter. This air  
purifier should be used in an area with a  
humidity level below 85% RH. If you use the  
air purifier in excessively humid areas, the  
surface of the filter may become moldy.  
Clean Air Delivery Rate (CADR) measures the  
efficiency of an air purifier by indicating the  
volume of clean air that an air purifier produces  
per minute. This is based on removal of dust,  
pollen, and smoke, which are the 3 most  
common indoor air pollutants. The higher the  
CADR, the more particles the air purifier will  
remove and the larger the area it can clean.  
The rating is measured at the air purifier’s  
highest speed.  
Note: Water or moisture will allow mold to  
grow. To solve a mold problem, get rid of  
the source of the moisture and clean up  
the mold.  
Essential Oils  
Do not add essential oils to the air purifier or  
filter. The filter will become damaged by the  
oil and will eventually release an unpleasant  
smell. Do not use diffusers near the air  
purifier.  
Air Change Per Hour  
The air change rate is how many times  
all of the air in a room can be purified (or  
“changed”) by the air purifier in 1 hour. Air  
changes per hour (ACH) are calculated with  
the recommended room size assuming 8 ft  
/ 2.4 m ceilings. For smaller rooms, the air  
change per hour will increase. This air purifier  
can change air 5 times per hour at the max  
speed in a single, closed room up to 403  
ft² / 37 m². This is measured at ACH 5. The  
air purifier is effective for larger rooms, but  
air purification will take longer, with fewer  
air changes per hour. For example, the air  
purifier’s effective range is 990 ft² / 92 m²  
based on 2 ACH, or purifying the air in the  
room 2 times per hour.  
Note: To effectively clean air, keep windows  
and doors closed while the air purifier is on.  
14  
CARE & MAINTENANCE  
Cleaning the Smart Air Purifier  
Cleaning the Filter  
Unplug before cleaning.  
The outer pre-filter should be cleaned every  
2–4 weeks to increase efficiency and extend  
the life of your filter. Clean the pre-filter using  
a soft brush or vacuum hose to remove hair,  
dust, and large particles. Do not clean the  
filter with water or other liquids.  
Wipe the outside of the air purifier with  
a soft, dry cloth. If necessary, wipe  
the housing with a damp cloth, then  
immediately dry.  
Vacuum the inside of the air purifier.  
Do not clean with abrasive chemicals or  
flammable cleaning agents.  
Resetting the Check  
Filter Indicator  
Check Filter Indicator  
Reset the Check Filter Indicator when:  
A.  
lights up red.  
will light up as a reminder to check the  
filter. Depending on how often you use the air  
purifier, the indicator should turn on at about  
12 months. You may not need to change your  
filter yet, but you should check it when  
turns on.  
1. Replace the filter (see page 16).  
2. Turn on the air purifier.  
3. Press and hold the  
button for 3  
seconds.  
When your air purifier is set up with the  
VeSync app, you can also check the app to  
see your remaining filter life. You will also  
receive a notification from VeSync when it’s  
time to check your filter.  
4.  
will turn off when successfully  
reset.  
B. The filter was changed before  
lit up.  
1. Press and hold the  
button for 3  
The VeSync app uses a scientific algorithm to  
determine your filter life based on air quality,  
amount of use, and other factors. The filter  
life percentage is based on 12 hours of daily  
use.  
seconds.  
2. The  
will flash for 3 seconds.  
3.  
will turn off when successfully  
reset.  
Filter  
When to Clean  
How to Clean  
When to Replace  
Every 2–4  
weeks  
Use a soft brush or  
vacuum hose  
Pre-Filter  
12 months  
True HEPA  
& Activated  
Carbon Filter  
Do not clean  
15  
CARE & MAINTENANCE (CONT.)  
When Should I Replace the  
Filter?  
Replacing the Filter  
1. Unplug the air purifier. Flip the air purifier  
over or turn it on its side. Remove the  
filter cover (see Getting Started, page 7).  
The filter should be replaced every 12  
months. You may need to replace your filter  
earlier or later depending on how often you  
use your air purifier. Using your air purifier in  
an environment with relatively high pollution  
may mean you will need to replace the filter  
2. Remove the old filter.  
3. Clean out any remaining dust or hair  
inside the air purifier using a vacuum  
hose. Do not use water or liquids to  
clean the air purifier. [Figure 3.2]  
more often, even if  
is off.  
You may need to replace your filter if you  
notice:  
4. Unwrap the new filter and place it into the  
housing (see Getting Started, page 7).  
Increased noise when the air purifier  
is on  
5. Replace the cover. Plug in the air purifier.  
6. Reset the Check Filter Indicator (see  
Decreased airflow  
Unusual odors  
page 15).  
A visibly clogged filter  
Storage  
Note:  
If not using the air purifier for an extended  
period of time, wrap both the air purifier and  
the filter in plastic packaging and store in a  
dry place to avoid moisture damage.  
To maintain the performance of your air  
purifier, only use official Levoit filters.  
To buy replacement filters, visit Levoit’s  
online store. Go to levoit.com for more  
information.  
Remember to reset  
after changing  
the filter (see page 15).  
Cleaning the AirSight Plus  
Laser Dust Sensor  
The AirSight Plus Laser Dust Sensor can be  
blocked by dust, which affects the sensor’s  
accuracy. Clean the sensor every 3 months.  
Using your air purifier in an environment with  
more dust may mean you will need to clean  
the sensor more often.  
Figure 3.2  
1. Unplug the air purifier.  
2. Place the end of a vacuum cleaner over  
the sensor openings. [Figure 3.3]  
3. Turn the vacuum on for at least 10  
seconds to clean out dust.  
Figure 3.3  
16  
TROUBLESHOOTING  
Problem  
Possible Solution  
Air purifier will not turn on or  
respond to button controls.  
Plug in the air purifier.  
Check to see if the power cord is damaged. If it is, stop using  
the air purifier and contact Customer Support (see page 22).  
Plug the air purifier into a different outlet.  
The air purifier may be malfunctioning. Contact Customer  
Support (see page 22).  
Airflow is significantly  
reduced.  
Make sure the filter is removed from its packaging and  
properly in place (see page 7).  
Tap  
to increase the fan speed.  
Leave 15 inches / 38 cm of clearance on all sides of the air  
purifier.  
The pre-filter may be clogged by large particles, such as hair  
or lint, blocking airflow. Clean the pre-filter (see page 15).  
Replace the filter (see page 16).  
Air purifier makes an unusual Make sure the filter is properly in place with plastic packaging  
noise while the fan is on.  
removed (see page 7).  
Make sure the air purifier is operating on a hard, flat, level  
surface.  
Replace the filter (see page 16).  
The air purifier may be damaged, or a foreign object may  
be inside. Stop using the air purifier and contact Customer  
Support (see page 22). Do not try to repair the air purifier.  
Strange smell coming from  
the air purifier.  
Clean the filter, or replace if necessary.  
Contact Customer Support (see page 22).  
Make sure not to use your air purifier in an area with high  
humidity or while diffusing essential oils.  
17  
TROUBLESHOOTING (CONT.)  
Problem  
Possible Solution  
Poor air purification quality.  
Tap  
to increase the fan speed.  
Make sure no objects are blocking the sides or top of the air  
purifier (the inlet or outlet).  
Make sure the filter is removed from its packaging and  
properly in place (see page 7).  
Close doors and windows while using the air purifier.  
If the room is larger than 403 ft² / 37 m², air purification will  
take longer.  
Replace the filter (see page 16).  
Reset the Check Filter Indicator (see page 15).  
is still on after replacing  
the filter.  
has not turned on within  
12 months.  
is a reminder for you to check the filter and will light up  
based on how much the air purifier has been used (see page  
15). If you don’t use your air purifier often,  
to turn on.  
will take longer  
turned on before 12  
months.  
is a reminder for you to check the filter and will light up  
based on how much the air purifier has been used (see page  
15). If you run your air purifier frequently,  
sooner.  
will turn on  
Air Quality Indicator always  
stays red.  
The AirSight Plus Laser Dust Sensor may need to be  
cleaned (see page 16).  
If you’re using an ultrasonic humidifier near the air purifier,  
the mist may affect the accuracy of the AirSight Plus Laser  
Dust Sensor. The sensor will detect the large mist particles,  
and the Air Quality Indicator may turn red. Avoid using an  
ultrasonic humidifier near the air purifier, or avoid using  
Auto Mode.  
Air Quality Indicator always  
stays blue, even when the air  
quality is poor.  
The AirSight Plus Laser Dust Sensor detects airborne  
particles, but it cannot detect gas. Make sure there isn’t gas  
polluting the air.  
Display shows Error Code  
“E1”.  
The motor has malfunctioned. Please contact Customer  
Support (see page 22).  
If your problem is not listed, please contact Customer Support (see page 22).  
18  
VESYNC APP TROUBLESHOOTING  
My smart air purifier isn’t connecting to the VeSync app.  
Make sure your phone has Bluetooth® turned on and is not currently connected to another  
Bluetooth device.  
During the setup process, you must be on a secure 2.4GHz Wi-Fi® network. Confirm that the  
network is working correctly.  
Make sure the Wi-Fi password you entered is correct.  
There should be no spaces at the beginning or end of the password.  
Test the password by connecting a different electronic device to the router.  
If you’re manually typing in the SSID and password, double check that both are entered  
correctly.  
Try moving your air purifier closer to the router. Your phone should be as close as possible  
to your air purifier.  
Your router may need to be at a higher location, away from obstructions.  
Make sure your air purifier and router are away from appliances (such as microwave ovens,  
refrigerators, electronic devices, etc.) to avoid signal interference.  
If you’re using a VPN, make sure it’s turned off while setting up your air purifier.  
Disable portal authentication for your Wi-Fi network. If portal authentication is enabled, the  
air purifier will not be able to access your Wi-Fi network, and setup will fail.  
Note: Portal authentication means that you need to sign in to your Wi-Fi network through a  
web page before you can use the Internet.  
My air purifier is offline.  
Make sure the air purifier is plugged in and has power, then refresh the VeSync menu by  
swiping down on the screen.  
Make sure your router is connected to the internet and your phone’s network connection is  
working.  
Delete the offline air purifier from the VeSync app. Swipe left (iOS®) or press and hold  
(Android™), then tap Delete. Reconfigure the air purifier with the VeSync app.  
Note: Power outages, internet outages, or changing Wi-Fi routers may cause the air purifier  
to go offline.  
If your problem is not listed, please contact Customer Support (see page 22).  
19  
FEDERAL COMMUNICATION COMMISSION  
INTERFERENCE STATEMENT – PART 15  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two  
conditions:  
1. This device may not cause harmful interference, and  
2. This device must accept any interference received, including interference that may cause  
undesired operation.  
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital  
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable  
protection against harmful interference in a residential installation. This equipment generates,  
uses and can radiate radio frequency energy and, if not installed and used in accordance with  
the instructions, may cause harmful interference to radio communications. However, there is no  
guarantee that interference will not occur in a particular installation. If this equipment does cause  
harmful interference to radio or television reception, which can be determined by turning the  
equipment off and on, the user is encouraged to try to correct the interference by one or more of  
the following measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different from that to which the receiver is  
connected.  
Consult the dealer or an experienced radio/TV technician for help.  
FCC Caution: Any changes or modifications not expressly approved by the party responsible for  
compliance could void the user’s authority to operate this equipment.  
FCC RADIATION EXPOSURE STATEMENT  
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled  
environment. End users must follow the specific operating instructions for satisfying RF exposure  
compliance. To maintain compliance with FCC RF exposure compliance requirements, please  
follow operation instructions as documented in this manual. This transmitter must not be co-  
located or operating in conjunction with any other antenna or transmitter. This equipment should  
be installed and operated with a minimum distance of 20cm between the radiator and your  
body. The availability of some specific channels and/or operational frequency bands are country  
dependent and are firmware programmed at the factory to match the intended destination. The  
firmware setting is not accessible by the end user.  
20  
WARRANTY INFORMATION  
Arovast will not be liable for indirect,  
Product Name VeSync Core Pro 400S  
incidental, or consequential damages in  
connection with the use of the product  
covered by this warranty.  
Smart True HEPA Air Purifier  
Model LAP-C401S-WUSR  
For your own reference, we strongly recommend  
that you record your order ID and date of  
purchase.  
This warranty extends only to the original  
consumer purchaser of the product and is  
not transferable to any subsequent owner  
of the product regardless of whether the  
product is transferred during the specified  
term of the warranty.  
Date of Purchase  
Order ID  
Terms & Policy  
This warranty does not extend to products  
purchased from unauthorized sellers.  
Arovast’s warranty extends only to products  
purchased from authorized sellers that are  
subject to Arovast’s quality controls and  
have agreed to follow its quality controls.  
Arovast Corporation (Arovast”) warrants this  
product to the original purchaser to be free  
from defects in material and workmanship,  
under normal use and conditions, for a  
period of 2 years from the date of original  
purchase.  
All implied warranties are limited to the  
period of this limited warranty.  
Arovast agrees, at our option during the  
warranty period, to repair any defect in  
material or workmanship or furnish an equal  
product in exchange without charge, subject  
to verification of the defect or malfunction  
and proof of the date of purchase.  
This warranty gives you specific legal rights  
and you may also have other rights which  
vary from state to state. Some states do not  
allow the exclusion or limitation of incidental  
or consequential damages, so the above  
limitation or exclusion may not apply to you.  
There is no other express warranty. This  
warranty does not apply:  
If you discover that your product is defective  
within the specified warranty period, please  
contact Customer Support via  
[email protected]. DO NOT dispose of  
your product before contacting us. Once  
our Customer Support Team has approved  
your request, please return the product with  
a copy of the invoice and order ID.  
If the product has been modified from  
its original condition;  
If the product has not been used  
in accordance with directions and  
instructions in the user manual;  
To damages or defects caused by  
accident, abuse, misuse or improper or  
inadequate maintenance;  
Every Levoit product automatically includes  
a 2-year warranty. To make the customer  
support process quick and easy, register  
your product online at  
To damages or defects caused by  
service or repair of the product  
performed by an unauthorized service  
provider or by anyone other than  
Arovast;  
To damages or defects occurring  
during commercial use, rental use, or  
any use for which the product is not  
intended;  
This warranty is made by:  
Arovast Corporation  
1202 N. Miller St., Suite A  
Anaheim, CA 92806  
To damages or defects exceeding the  
cost of the product.  
21  
CUSTOMER SUPPORT  
If you have any questions or concerns about  
your new product, please contact our helpful  
Customer Support Team.  
Distributed by Arovast Corporation  
1202 N. Miller St., Suite A  
Anaheim, CA 92806  
Toll-Free: (888) 726-8520  
Support Hours  
Mon–Fri, 9:00 am–5:00 pm PST/PDT  
*Please have your order invoice and order ID  
ready before contacting Customer Support.  
ATTRIBUTIONS  
Amazon, Alexa, and all related logos are trademarks of Amazon.com, Inc. or its affiliates.  
Google, Android, and Google Play are trademarks of Google LLC.  
App Store® is a trademark of Apple Inc.  
Wi-Fi® is a registered trademark of Wi-Fi Alliance®.  
iOS is a registered trademark of Cisco Systems, Inc. and/or its affiliates in the United States and  
certain other countries.  
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and  
any use of such marks by Arovast Corporation is under license. Other trademarks and trade names  
are those of their respective owners.  
22  
/LEVOITLIFESTYLE  
/LEVOIT  
/LEVOIT  
/LEVOIT  
LEVOIT.COM  
HS081921AL-M1.1_0821LAP-C401S-WUSR  

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