Levoit OasisMist LUH-O451S-WUS - Smart Humidifier Manual

Package Contents

• 1 × Smart Humidifier
• 1 × Cleaning Brush
• 3 × Aroma Pad (1 Pre-Installed)
• 3 × Absorption Pad (1 Pre-Installed)
• 2 × Water Filter Sponge (1 Pre-Installed)
• 1 × User Manual
• 1 × Quick Start Guide

Specifications

Note: To access additional smart humidifier functions, download the free VeSync app.

READ AND SAVE THESE INSTRUCTIONS

SAFETY INFORMATION

To reduce the risk of fire, electric shock, or other injury, follow all instructions and safety guidelines.

General Safety

• Only use the humidifier as described in this manual.
• Place the humidifier and cord so that it will not be knocked over. Do not place near large pieces of furniture or in high-traffic areas.
• When not in use, turn the humidifier off and disconnect from power by removing the plug from the outlet.
• Do not use the humidifier in wet environments.
• Keep the humidifier out of reach from children.
• Do not open the base or remove the water level sensor for self-servicing.
• Always unplug your humidifier from the power outlet before cleaning your humidifier or detaching the water tank from the humidifier base.
• Always make sure to place the humidifier on a flat, level surface before operation.
• Only fill the water tank with clean water. Never fill the water tank with any other liquids.
• Do not place the humidifier near sources of heat, such as stovetops, ovens, or radiators.
• Do not place the humidifier directly on floors, carpets, or rugs.
• Do not use other items as replacement parts for this product.
• Do not cover the nozzles while the humidifier is on. Doing so may damage the humidifier.
• Remove the water tank from the base before moving the humidifier.
• Do not immerse the humidifier base, power cord, or plug in water.
• Do not clean the humidifier immediately after turning it off, especially if it has been diffusing warm mist. Allow the humidifier to cool down completely before cleaning.
• If the humidifier is damaged or is not functioning properly, stop using it and contact Customer Support immediately.
• This humidifier is not to be used by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
• Supervise children when they are near the humidifier.
• Children should not clean or perform maintenance on the humidifier without supervision.
• Children should be supervised to ensure that they do not play with the humidifier.
• Not for commercial use. Household use only.

Power & Cord

• Ensure that the plug fits properly into a polarized socket.
• Your humidifier has a polarized plug (one prong is wider than the other), which fits into a polarized outlet only one way. This is a safety feature to reduce the risk of electric shock. If the plug does not fit, reverse the plug. If it still does not fit, do not use the plug in that outlet. Do not bypass this safety feature.
• Do not handle the power cord or plug with wet hands. Keep the plug and power cord away from liquids.
• 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.
• Unplugging the power cord will disable remote control of the humidifier and temporarily disconnect the humidifier from VeSync and other third-party apps.

Electromagnetic Fields (EMF)
This humidifier 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.

• Only add essential oils to the aroma pad.
• Do not add essential oils, supplemental water treatment liquids, or water filters into the water tank or base chamber. This will damage the humidifier and cause leaks.

GETTING TO KNOW YOUR SMART HUMIDIFIER

1. Top Cover
2. Nozzles
3. Handle
4. Water Tank
5. Mist Tube
6. LED Display
7. Control Panel
8. Base
9. Water Filter

10. Water Filter Sponge
11. Heating Element
12. Float
13. Transducer
14. Float Brackets
15. Power Cord
16. Noise Silencer
17. Absorption Pad
18. Air Outlet

19. Aroma Pad
20. Aroma Box
21. Humidity Sensor / Air Inlet (In Aroma Box Compartment)
22. Air Inlet (Under the Base)
23. Cleaning Brush
24. Feet
25. Mist Channel (Under Water Tank)

Mist Level Indicators (White)

	Low Mist
	Medium Mist
	High Mist

Warm Mist Indicators (Orange)

	Heat Off
	Low Heat
	Medium Heat
	High Heat

CONTROLS

Note: You can also use the VeSync app to control these functions, as well as additional app-only features.

On/Off Button

• Press to turn the humidifier on/off.
• Press and hold for 5 seconds to pair with the VeSync app. See the in-app instructions for more information.
• Press and hold for 15 seconds to reset the humidifier. This will restore the humidifier's default settings and disconnect it from Wi-Fi® and the VeSync app.

Mist Level Button

• Press repeatedly to cycle through mist level settings: low, medium, and high mist.
• Press and hold for 3 seconds to turn the display off. Press any button to turn the display back on.

Auto Mode Button

• Press to turn Auto Mode on.
• Press to use warm mist while in Auto Mode.
• Press to turn Auto Mode off and resume manual controls.

GETTING STARTED

1. Remove all packaging.
2. Clean the water tank and water tank cover before first use.
   Note: Check to make sure that the water filter is correctly in place. If not, then rotate the filter clockwise to secure it in place. [Figure 1.1}
   
3. Choose a hard, flat location for the humidifier at least 12 inches / 30 cm away from any walls. The surface must be water-resistant. [Figure 1.2]
   
   Note:
   • Do not place the humidifier directly on floors, carpets, or rugs.
   • Placing the humidifier away from walls ensures that the humidity sensor and air inlets function properly.
4. Mist should be directed away from walls, furniture, bedding, and appliances. [Figure 1.3] Avoid letting too much mist fall on the side of the humidifier with the aroma box, as this may interfere with the sensor inside the aroma box.
   

Filling & Refilling
Note: Make sure the water tank is clean before filling.

1. Remove the water tank cover. [ Figure 1.4 ]
   

VESYNC APP SETUP

Note: Due to ongoing updates and improvements, the VeSync app may be slightly different than shown in the manual. In case of any differences, follow the in-app instructions.

1. To download the VeSync app, scan the QR code or search "VeSync" in the Apple App Store® or Google Play Store.
   
   
   
   Figure 2.1
2. Open the VeSync app. If you already have an account, tap Log In. To create a new account, tap Sign Up.
   Note: You must create your own VeSync account to use third-party services and products. These will not work with a guest account. With a VeSync account, you can also allow your family and friends to control your smart humidifier.
3. Follow the in-app instructions to set up your smart humidifier.
   Note:

• You can use the VeSync app to connect your smart humidifier to Amazon Alexa or Google Assistant™. Follow the in-app instructions to connect VeSync to your voice assistant.
• Your phone must have Location turned on while your phone is connecting to your smart humidifier. This is required to establish the Bluetooth® connection. You can turn Location off after your smart humidifier is finished connecting to the VeSync app.

Wi-Fi Connection

• To disconnect Wi-Fi, press and hold for 15 seconds until the Wi-Fi indicator turns off. This will restore the smart humidifier's default settings and disconnect it from the VeSync app.
• To reconnect, please follow the instructions in the VeSync app for adding a device.

USING YOUR SMART HUMIDIFIER

Note: Using the VeSync app allows you to control your smart humidifier remotely and access additional functions and features.

1. Plug in the humidifier. The indicators on the display will light up for 1 second, then turn off.
2. Press to turn your humidifier on. The humidifier will start misting.
   Note: If there is no water in the tank, will flash 10 times, and the humidifier will turn off. Fill the water tank (see Getting Started)
3. Press repeatedly to cycle through mist settings: Low, Medium, and High. [Figure 3.1]
   
4. Rotate the nozzles to adjust the direction of the mist. [Figure 3.2]
   
   Note:

• Direct the nozzles away from any furniture, walls, or other objects to prevent them from getting wet.
• Do not inhale the mist directly from the nozzles.

5. Optionally, use the controls or the VeSync app to turn on warm mist, activate Sleep Mode, and more (see Controls).
6. When your room has reached your preferred humidity level, turn the humidifier to a lower setting, or turn it off. A comfortable humidity level is between 40% and 60%.
   Note: You can also set the humidifier to automatically stop misting when the room reaches a specific humidity level (see Auto Mode)
7. Press to turn your humidifier off.

Warm Mist

• Press to turn on warm mist. Keep pressing to increase the heat setting of the mist, and to turn warm mist off. [Figure 3.3]
  
• The humidifier may take 15 minutes to warm up before producing warm mist.
• 
  Mist may be hot. Do not place your bare hands, face, or other exposed skin over the nozzles while using warm mist. [Figure 3.4] Nozzles can reach temperatures as high as 140ºF / 60ºC.
  

Auto Mode
Auto Mode uses the humidifier's sensor to automatically adjust the mist level to maintain a target humidity level. The default target humidity level is 60%.
Note: You can use the VeSync app to change the target humidity level to fit your needs.

1. Press to turn Auto Mode on.
   Note: The humidifier will automatically mist for 15 seconds after being turned on, even if the room has reached the target humidity level.
2. Optionally, press to turn on warm mist and adjust the warm mist setting.
3. By default, Auto Mode uses Automatic Stop. The humidifier will stop misting when the highest target humidity level is reached (default 60%).
   Note:
   • In the VeSync app, you can turn Automatic Stop on/off.
   • If Automatic Stop is off, the humidifier will keep running on low mist level when the highest target humidity level is reached.
4. The humidifier will continue detecting the humidity level in the room. It will start and stop misting again according to the following table:

• If you change the target humidity from 60% in the VeSync app, the humidity percentages will change accordingly.

Sleep Mode
Sleep Mode changes the humidifier's mist setting to low and turns off the display lights, making it ideal for sleep. Sleep Mode can only be used with cool mist.

• Press to turn Sleep Mode on/off.
  Note: Sleep Mode automatically turns off warm mist to reduce noise levels.
• When Sleep Mode is on, you can press any button to wake up the display. If you stop touching the display, the display will turn off again after 6 seconds.
• Once you wake up the display, press any button to exit Sleep Mode and resume manual controls.

Turning Off the Display
The display will automatically dim after 3 seconds of inactivity.

• To turn off the display, press and hold for 3 seconds.
• To turn the display back on, press any button.

Using the Aroma Box
Your humidifier can be used for aromatherapy.

1. Push the aroma box at the back of the base and pull it out. [Figure 4.1]
   
2. Put 8–10 drops of essential oils on the aroma pad. [Figure 4.2]
   
3. Insert the aroma box back into the humidifier.
4. Turn on the humidifier. The humidifier will automatically diffuse aroma when used.
   Note:
   • • Do not add essential oils, water treatment liquids, or third-party water filters into the water tank or base chamber. Only add essential oils to the aroma pad. [Figure 4.3]
     
   • The aroma pads can be cleaned and reused after diffusing essential oils (see Cleaning the Aroma Pad & Absorption Pad).
   • This humidifier uses a small heat-based aroma diffuser. The aroma is intended to be light.
   • For information on replacement aroma pads.

Absorption Pads

The mineral absorption pads help reduce mineral buildup (scale) inside the humidifier, especially on the heating element.
Note: For information on replacement absorption pads.

Memory Function

• The humidifier will remember your settings for Mist Level, Warm Mist, and Wi-Fi settings when turned off or unplugged, and will resume those settings when turned back on.
• The humidifier will remember Sleep Mode or Auto Mode settings, and the display will automatically turn back on when the humidifier is turned back on.

Automatic Shutoff
The humidifier will automatically turn off when all of the water in the tank has been diffused. will show on the display and blink 10 times before the humidifier turns off. Fill the water tank (see Getting Started).
If the tank has been removed from the base, the humidifier will automatically stop misting. will show on the display and will turn off once the tank is placed properly back on the base.

VeSync App Functions
The VeSync app allows you to access additional smart functions, including those listed below.

Remote Control From Your Phone

• Turn the humidifier on/off.
• Cycle through mist levels and heat levels.
• Turn Auto Mode on/off and set target humidity level.
• Turn Sleep Mode on/off.
• Turn the display lights on/off.

Monitor Humidity Levels

• Check current humidity levels in the humidifier's environment.

Set Timers & Schedules

• Program individual timers or create a schedule for your smart humidifier.

Third-Party Voice Control

• Compatible with Amazon Alexa and Google Assistant™ for voice commands.
  Note: The VeSync app is continually updated and app features will expand.

Important Tips
Your humidifier must have the correct level of water in the base chamber to work properly. If there is too much water in the base chamber, the humidifier cannot create mist.

• Do not place the humidifier on an inclined surface.
• Never pour water directly into the base chamber. [Figure 5.1] Only add water to the water tank. The humidifier will automatically release the correct amount of water into the base chamber.
  
• Avoid moving or shaking the humidifier. [Figure 5.2] This may cause the water tank to release too much water into the base chamber.
  
• Before moving the humidifier, turn it off, unplug it, and remove the water tank. Empty any excess water from the base chamber.

CARE & MAINTENANCE

Note:

• All maintenance should be done on a waterresistant surface, such as a kitchen counter.
• Change the water daily to avoid bacteria growth.
• Use a tissue or cloth to clean the nozzles regularly.
• If not using the humidifier for 1 week or longer, do not leave water inside. Clean and dry the humidifier instead.

Cleaning
You should clean your humidifier water tank and base chamber every 3 days, and when you're ready to store it.
Note:

• Never immerse the base in water or liquid. Do not place any part of the humidifier in a dishwasher.
• Do not use detergents to clean the humidifier.

1. Unplug the humidifier.
   Note: If you've been using the warm mist setting, allow the humidifier to cool before cleaning.
2. Remove and rinse the water tank cover. [ Figure 6.1 ]
   
3. Remove the water tank from the base. Pour out any water from the tank and base chamber. If you've used the warm mist setting, use caution in case the water is still hot.
   Note: When pouring out water, hold down the float to ensure that it does not fall out of the base chamber.
4. Remove the water filter from the tank by rotating it counterclockwise and lifting it out. [Figure 6.2]
   
5. Remove the water filter sponge from the water filter if necessary for cleaning. [Figure 6.3]
   
6. Flip the water tank over. Pinch the tab and pull out the mist channel. [Figure 6.4]
   
7. Remove the float, noise silencer, absorption pad, and aroma box from the base.
8. Rinse all parts (except the outside of the base) with room temperature water. [Figure 6.5]
   
9. Dry all parts with a cloth. Make sure all parts are completely dry before reassembling or storing.

Descaling Your Humidifier
To descale the humidifier (remove mineral buildup):

1. Remove the water filter and water filter sponge from the tank. Flip the tank over and remove the mist channel. Then, remove the noise silencer and absorption pad from the base.
2. Fill the tank with 3 US cups / 710 mL of distilled white vinegar. [Figure 7.1]
   
3. Replace the tank cover and swish the vinegar around the tank. [Figure 7.2]
   
4. Place the tank on the base and soak for 15–20 minutes. Vinegar will drain into the base chamber and loosen scale (mineral buildup) in the tank and in the base chamber (including the transducer and float). [Figure 7.3]
   
5. Remove the tank, remove the tank cover, and pour out any vinegar. [Figure 7.4]
   
6. Remove the float from the base chamber by pulling up the larger side of the float and pulling the shaft out from the float brackets. One side of the float brackets is open (U-shaped) to allow the shaft to be removed. [Figure 7.5]
   
7. Place the float, water filter, mist channel, aroma box, and noise silencer in a container. Fill with enough vinegar to cover them. Soak for 15–20 minutes. [ Figure 7.6 ]
   
8. Use a soft cloth and the included cleaning brush to remove scale from all parts. [ Figure 7.7 ]
   
9. Rinse all parts until any vinegar smell is completely gone. [Figure 7.8]
   

Cleaning the Aroma Pad & Absorption Pad

1. Pull out the aroma box and remove the aroma pad. [Figure 8.1]
   
2. Remove the noise silencer, then remove the absorption pad from on top of the heating element. [Figure 8.2]
   
3. Rinse the pads under warm, running water. [Figure 8.3]
   
4. Dry the pads with a clean cloth.
5. Place the aroma pad back into the aroma box. [Figure 8.4]
   
6. Place the absorption pad back into the base.[ Figure 8.5 ]
   Note: Do not use liquid cleaners or detergents to clean the pads or any other part of the humidifier.
   

Replacing the Aroma Pad & Absorption Pad
If the aroma pad or absorption pad is stiff even after cleaning, then it needs to be replaced. Extra pads are included with the humidifier.
To maintain the performance of your humidifier, only use official Levoit aroma pads and absorption pads. For more information, contact Customer Support.

Reassembling

1. Place the float back into the base chamber: [ Figure 9.1 ]
   
   1. Make sure the correct side of the float is facing up.
   2. Insert the smaller prong into the closed side of the float brackets.
   3. Place the larger prong into the open (U-shaped) side of the float brackets.
2. Place the absorption pad and the noise silencer back over the heating element. [ Figure 9.2 ]
   
   

Storing
Follow the cleaning instructions and allow all parts to dry completely before storing. Store in a cool, dry location.

TROUBLESHOOTING

VESYNC APP TROUBLESHOOTING

Why isn't my humidifier 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.
• Make sure your humidifier and phone are within 30 ft / 10 m of each other.
• Reset the humidifier by pressing and holding for 15 seconds. Then try connecting again.

My humidifier is offline

• Make sure the humidifier is plugged in. The humidifier may appear to be offline if it is unplugged, or if the outlet does not have power.
• 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.
• Reset the humidifier using one of these options:

1. Delete the humidifier from the VeSync app. Swipe left (iOS®) or press and hold (Android), then tap Delete. Then reconfigure your humidifier with the VeSync app.
2. Press and hold for 15 seconds. Then reconfigure your humidifier with the VeSync app.
   Note: Power outages, internet outages, or changing Wi-Fi routers may cause your humidifier to go offline.

The VeSync app is displaying an incorrect humidity percentage while the humidifier is turned on.

• The room may be larger than the humidifier's effective range. Move to a room smaller than 215–430 ft² / 20–40 m².
• Moisture may have built up inside the humidity sensor. Make sure the nozzles are facing away from the aroma box so that mist does not settle on the sensor inside the aroma box (see diagram in Getting To Know Your Smart Humidifier). Turn off the humidifier, remove the aroma box, and allow the sensor to air dry.
• If the humidifier is placed within 12 inches / 30 cm of a wall or in a corner, the humidity sensor cannot provide a proper reading for the relative humidity in the room.
• The humidity sensor will give an improper reading if it is exposed to dust. Avoid using the humidifier in dusty rooms.

If your problem is not listed, please contact Customer Support.

Questions or Concerns?
Please contact us Mon–Fri, 9:00 am–5:00 pm PST/PDT at support@levoit.com or at (888) 726-8520.