Levoit VeSync Core Pro 400S 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 [phone].
USER MANUAL

2
Table of Contents
Package Contents
Specifications
Safety Information
Getting to Know Your Smart Air Purifier
Controls & Display
Getting Started
Using Your Smart Air Purifier
About the Filter
Care & Maintenance
Troubleshooting
Warranty Information
Customer Support
2
2
3
5
6
7
8
13
15
17
21
22
Package Contents
1 x Smart Air Purifier
1 x True HEPA 3-Stage Original Filter
(Pre-Installed)
1 x User Manual
1 x Quick Start Guide
Specifications
Power Supply AC 120V, 60Hz
Rated Power 38W
Ideal Room Size 403 ft / 37 m
This Ideal Room Size
is based on 5 air
changes per hour
(ACH).
990 ft / 92 m
This Ideal Room Size
is based on 2 air
changes per hour
(ACH).
Note: Eective for
larger rooms but
purification will take
longer.
CADR (CFM) 260 CFM / 442 m/h
Operating
Conditions
Temperature:
14°–104°F / -10°–40°C
Humidity: < 85% RH
Noise Level 24–52dB
Dimensions 10.8 x 10.8 x 20.5 in /
27.4 x 27.4 x 52 cm
Weight 11 lb / 5 kg
Note: To access additional smart functions,
download the free VeSync app (see page 8).

3
SAFETY INFORMATION
• Only use your air purifier as described in
this manual.
• 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.
• 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.
• Do not use where combustible gases,
vapors, metallic dust, aerosol (spray)
products, or fumes from industrial oil are
present.
• Keep 5 ft / 1.5 m away from where oxygen
is being administered.
• Supervise children when they are near the
air purifier.
• Do not place anything into any opening in
the air purifier.
• 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.
• 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).
To reduce the risk of fire, electric shock, or other injury, follow all instructions and safety
guidelines.
General Safety
• Keep the air purifier near the outlet it is
plugged into.
• Never place the cord near any heat
source.
• Do not cover the cord with a rug, carpet,
or other covering. Do not place the cord
under furniture or appliances.
• 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.
Power & Cord
READ AND SAVE THESE
INSTRUCTIONS
• 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).
• Children should not clean or perform
maintenance on the air purifier without
supervision.
• 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.
• Not for commercial use. Household use
only.

• 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.
SAFETY INFORMATION (CONT.)

5
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
F. Check Filter Indicator
G. Timer Button
H. On/O Button
I. Wi-Fi® Indicator
J. Auto Mode Button
K. PM2.5/Timer Display
Front, upside downBack
L. Display O Button
M. Display Lock Indicator
N. Display Lock Button
O. Air Outlets
P. Housing
Q. Air Inlets
R. AirSight Plus™ Laser Dust Sensor
S. Anti-Skid Pads
T. Filter Cover
U. True HEPA 3-Stage Original Filter
B
J
S T
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N
M
I
K
F
H
O
P
Q
R
C
G
E
D
A

6
CONTROLS & DISPLAY
On/O Button
• Turns the air purifier on/o.
• Press and hold to configure
the air purifier. See the
VeSync in-app instructions
for more information.
• Press and hold to reset the
air purifier and disconnect
from Wi-Fi (see page __).
Fan Speed Button
• Cycles through fan speeds:
low (1 indicator will light up),
medium (2 indicators), high
(3 indicators), and turbo
(4 indicators).
• 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.
Wi-Fi® Indicator
• Turns on, o, or blinks to
indicate pairing status.
See the VeSync in-app
instructions for more
information.
Sleep Mode Button
• Turns Sleep Mode on/o
(see page 9).
• Press and hold for 3 seconds
to reset the Check Filter
Indicator (see page 15).
Timer Button
• Cycles through timer
options (see page 10).
• Press and hold for 2
seconds to begin cycling
through the timer options in
1-hour increments.
Display Lock Button
• Prevents current settings
from being changed (see
page 10). Press and hold for
3 seconds to turn Display
Lock on/o.
• The Display Lock Indicator
( ) will blink when any
other button is tapped to
indicate that Display Lock
is on.
Auto Mode Button
• Turns Auto Mode on/o
(see page 9).
Plasma Button
• Turns the Plasma function
on/o (see page 11).
Display O Button
• Turns the display o (see
page 10).
• Tap any button (except )
to turn the display back on.
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).

7
3. Replace the filter cover and twist
clockwise to lock. [Figure 1.3]
Figure 1.3
Figure 1.4
15 in /
38 cm
cover should
snap shut
15 in /
38 cm
GETTING STARTED
1. Flip the air purifier over or turn it on its side.
Twist the filter cover counterclockwise and
remove it. [Figure 1.1]
Figure 1.1
Figure 1.2
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]

8
USING YOUR SMART
AIR PURIFIER
1. Plug in and tap to turn on the air
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.
• To eectively clean air, keep windows
and doors closed while the air purifier
is on.
Note:
• To disconnect Wi-Fi, press and hold the
On/O button for 15 seconds until the Wi-Fi
indicator turns o. This will restore the smart
air purifier’s default settings and disconnect
it from the VeSync app.
• To reconnect, please follow the instructions
in the VeSync app for adding a device. 3. Tap to turn o the air purifier.
Figure 2.1
Note: You must create your own VeSync account
to access voice assistants.
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
your smart air purifier.
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.
VeSync App Setup
Connect with Amazon Alexa or
Google Assistant™

9
Sleep Mode operates quietly by using a fan
speed lower than low speed.
1. Tap to turn Sleep Mode on/o.
2. Sleep Mode will turn o the display after
3 seconds if no other buttons are tapped.
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.
The PM2.5 value on the display shows the
amount of airborne particles (g) that are
detected per 1 cubic meter (m) of air volume.
PM2.5 refers to particulate matter (PM) that
is less than or equal to 2.5 microns (m) 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.
Your air purifier’s AirSight Plus Laser Dust
Sensor detects the amount of PM2.5 particles
that are in a given space (g/m). 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.
Note:
• When the display is turned o, tap any
button (except ) to turn the display
back on. If you don’t tap another
button, the display will turn o 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).
• 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.
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.
• Auto Mode does not use the turbo fan
speed.
• The VeSync app also supports
additional auto modes: Quiet Auto
Mode and Ecient Auto Mode (see
page 11).
USING YOUR PURIFIER (CONT.)
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 Good Low 36–75 ug/m3
Orange Moderate Medium 76–115 ug/m3
Red Bad High > 115 ug/m3
Auto Mode
PM2.5 Display
Sleep Mode

10
You can set a timer for 1–12 hours.
1. Tap . The display will switch from
showing the PM2.5 reading to the time
you’ve selected.
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.
Note:
• While a timer is active, tapping will
show the remaining time, rounded up to
the nearest hour. Tap again within
5 seconds to add more time in 1-hour
increments.
• You can see the exact remaining time in
the VeSync app.
Note:
• You can change the fan speed at any
time while the timer is on.
• The timer will restart if the time is
changed.
• The air purifier will remember the last
timer setting while turned o, but the
timer will be cancelled and need to be
restarted.
• You can set a timer for 1–24 hours in
the VeSync app.
3. The timer will count down from your
selected time.
Note: Press and hold for 2 seconds to
cycle through timer options automatically in
1-hour increments.
USING YOUR PURIFIER (CONT.)
Timer
4. When the timer is finished, the air purifier
will turn o.
5. To cancel a timer, tap repeatedly until
the display reads “--H”.
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.
1. Press and hold for 3 seconds to lock
the display. The indicator will light up
in the center of the display.
This turns o the display lights on the air
purifier, including button lights and indicator
lights (except the Check Filter Indicator).
1. Tap to turn o the display.
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 o after 3 seconds.
3. Tap to turn the display back on. The
display will stay on.
Note: The Check Filter Indicator will still turn
on and stay on if it’s time to check your filter
(see page 15).
Note: If the display is turned o, the
indicator will flash 3 times to show that the
display has been locked, then turn o.
Note:
• If the display is turned o, the
indicator will flash 3 times to show that
the display has been unlocked.
• Display Lock can still be used when the
air purifier is in Standby Mode.
Display Off
Display Lock
2. The indicator will blink when any
other button is tapped to indicate that
Display Lock is on.
3. Tap and hold again for 3 seconds to
unlock the display. The indicator will
turn o.

11
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).
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.
Remote Control
• Change any air purifier settings
through the app, even while Display
Lock is on.
Air Quality Updates
• View real-time PM2.5 updates in the
app.
• See your air quality history for the
previous week.
Auto Mode
• Access additional Auto Modes: Quiet
Auto Mode and Ecient Auto Mode.
• 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.
• Ecient 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
VeSync App Functions
USING YOUR PURIFIER (CONT.)
The air purifier is in Standby Mode when it is
turned o, 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.
Note: Ecient Auto Mode is useful for
purifying odors from the air. The air purifier’s
sensor can only detect particles in the
air, not smells. Ecient Auto Mode does
not rely on the sensor, but the room size
instead.
When the air purifier is plugged in and turned
o, it will remember its previous fan speed,
Sleep Mode, Auto Mode, Display Lock,
Display O, and Plasma settings.
When you unplug the air purifier, it will only
remember its previous fan speed, Sleep
Mode, and 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.
Note: You cannot use the plasma function
during Sleep Mode.
Memory Function
Standby Mode

12
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.
Schedules
• Create and customize schedules
for your air purifier to match your
routines.
USING YOUR PURIFIER (CONT.)

13
ABOUT THE FILTER
The air purifier uses a 3-stage filtration
system to purify air.
A. Pre-Filter
• Captures large particles such as dust,
lint, fibers, hair, and pet fur.
• Maximizes the filter’s life by
protecting it.
B. H13 True HEPA Filter
• Captures at least 99.97% of airborne
particles 0.3 microns (m) in size.
• Traps small particles such as fine
dust, smoke particles, and allergens
such as pollen and pet dander.
A
B
C
Note: This air purifier includes an optional Plasma Function, which is a 4th filtration stage that helps
neutralize some pollutants (see page 11).
C. Custom High-Eciency Activated
Carbon Filter
• Physically adsorbs smoke, odors, and
fumes.
• Customized using Levoit’s exclusive
ARC Formula™ to be especially
eective for cooking smells and pet
odors in a multi-pet household.
• 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.
• Filters compounds such as
formaldehyde, benzene, ammonia,
hydrogen sulfide, and volatile organic
compounds (VOCs).

14
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.
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 diusers near the air
purifier.
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
ft / 37 m. This is measured at ACH 5. The
air purifier is eective for larger rooms, but
air purification will take longer, with fewer
air changes per hour. For example, the air
purifier’s eective range is 990 ft / 92 m
based on 2 ACH, or purifying the air in the
room 2 times per hour.
This air purifier has a Clean Air Delivery Rate of
260 cubic feet per minute (CFM), or 442 m/h.
Clean Air Delivery Rate (CADR) measures the
eciency 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.
Humidity
Essential Oils
Air Change Per Hour
Clean Air Delivery Rate
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.
Note: To eectively clean air, keep windows
and doors closed while the air purifier is on.
ABOUT THE FILTER (CONT.)

15
Resetting the Check
Filter Indicator
Reset the Check Filter Indicator when:
A. lights up red.
1. Replace the filter (see page 16).
2. Turn on the air purifier.
3. Press and hold the button for 3
seconds.
4. will turn o when successfully
reset.
B. The filter was changed before
lit up.
1. Press and hold the button for 3
seconds.
2. The will flash for 3 seconds.
3. will turn o when successfully
reset.
CARE & MAINTENANCE
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.
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.
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.
Check Filter Indicator
Cleaning the Smart Air Purifier
• Unplug before cleaning.
• 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.
Filter When to Clean How to Clean When to Replace
Pre-Filter Every 2–4
weeks
Use a soft brush or
vacuum hose
12 months
True HEPA
& Activated
Carbon Filter
Do not clean
The outer pre-filter should be cleaned every
2–4 weeks to increase eciency 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.
Cleaning the Filter

16
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).
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]
4. Unwrap the new filter and place it into the
housing (see Getting Started, page 7).
5. Replace the cover. Plug in the air purifier.
6. Reset the Check Filter Indicator (see
page 15).
The AirSight Plus Laser Dust Sensor can be
blocked by dust, which aects 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.
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.
Replacing the Filter
Cleaning the AirSight Plus
Laser Dust Sensor
Figure 3.2
Figure 3.3
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.
Storage
CARE & MAINTENANCE (CONT.)
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
more often, even if is o.
You may need to replace your filter if you
notice:
• Increased noise when the air purifier
is on
• Decreased airflow
• Unusual odors
• A visibly clogged filter
When Should I Replace the
Filter?
Note:
• To maintain the performance of your air
purifier, only use ocial 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).

17
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 dierent 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
noise while the fan is on.
Make sure the filter is properly in place with plastic packaging
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 diusing essential oils.
TROUBLESHOOTING

18
If your problem is not listed, please contact Customer Support (see page 22).
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 ft / 37 m, air purification will
take longer.
Replace the filter (see page 16).
is still on after replacing
the filter.
Reset the Check Filter Indicator (see page 15).
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, will take longer
to turn on.
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, will turn on
sooner.
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 aect 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).

19
If your problem is not listed, please contact Customer Support (see page 22).
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 dierent 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 o 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.
My air purifier is oine.
• 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 oine 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: Portal authentication means that you need to sign in to your Wi-Fi network through a
web page before you can use the Internet.
Note: Power outages, internet outages, or changing Wi-Fi routers may cause the air purifier
to go oine.

20
FEDERAL COMMUNICATION COMMISSION
INTERFERENCE STATEMENT – PART 15
FCC RADIATION EXPOSURE STATEMENT
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 o 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 dierent 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.
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.