Levoit Humidifier LUH-D302S-WDE Manual

The Levoit LUH-D302S-WDE is a 3.5L ultrasonic cool mist humidifier designed for medium to large rooms. It features a 360° nozzle, adjustable mist output, optional night light, auto mode, timer function (1-12 hours), and a built-in humidity sensor. It operates quietly, has a top-fill design for easy refilling, and includes essential safety features like low water indicator and automatic shut-off. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation & Setup 3. First-Time Use 4. Specifications 5. Controls and Operation 6. Maintenance & Cleaning 7. Safety Features 8. Care & Storage 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: 3.5L water tank, 360° adjustable nozzle, Control Panel (Touch), Humidistat, Night Light, Water Level Window, Power Adapter.

Feature	Description
360° Nozzle	Adjustable direction for optimal mist distribution
Touch Control Panel	For mode selection and settings adjustment
Auto Mode	Automatically adjusts mist output based on room humidity
Timer Function	Set operation for 1-12 hours
Night Light	Optional soft lighting with on/off control
Top-Fill Design	Easy refilling directly into the tank opening
Low Water Indicator	LED light alerts when water is low
Automatic Shut-Off	Turns off when tank is empty or removed
Quiet Operation	Ultrasonic technology for whisper-quiet performance
Humidity Sensor	Monitors room humidity levels

Installation & Setup

Unpack and inspect all contents. Place on a stable, flat, and level surface.

Remove tank: Lift the water tank from the base.
Fill with water: Open the tank lid, fill with clean, cool tap water up to MAX line. Do not overfill.
Replace tank: Securely place the filled tank back onto the base.
Connect power: Plug the power adapter into the unit and then into a standard 120V AC outlet.

WARNING! Use only clean, cool water. Do not use hot water, essential oils, or additives unless specified. Ensure unit is on a stable surface away from electronics.

First-Time Use

Power on the humidifier; the control panel will illuminate.

Select mode: Press the MODE button to choose between AUTO, LOW, MED, and HIGH mist settings.
Set humidity target (Auto Mode): Use the +/- buttons to set desired humidity level (40%-60% recommended).
Set timer: Press TIMER button and use +/- to set duration (1-12 hours).
Adjust night light: Press LIGHT button to turn the night light on/off.
Adjust nozzle: Rotate the 360° nozzle to direct mist away from walls and furniture.

CAUTION! Always place the humidifier on a waterproof surface. Keep out of reach of children and pets.

Specifications

Model: LUH-D302S-WDE
Tank Capacity: 3.5 Liters (0.92 Gallons)
Room Coverage: Up to 300 sq ft
Run Time: Up to 25 hours on low setting
Mist Output: Adjustable up to 300 mL/hr
Noise Level: ≤ 30 dB
Power Consumption: 25W
Power Source: 120V AC, 60Hz
Dimensions: 9.8" x 9.8" x 12.6"
Weight: 4.4 lbs (empty)

Controls and Operation

Access all functions via the Touch Control Panel on the top of the unit.

Control Panel: POWER, MODE (AUTO/LOW/MED/HIGH), TIMER, +/- (Humidity/Time adjustment), LIGHT (Night Light).

Modes: AUTO (maintains set humidity), LOW (quiet, minimal mist), MED (balanced output), HIGH (maximum mist output). Timer: Set 1-12 hours; unit will shut off automatically. Night Light: Soft blue light, can be turned off. Humidistat: Displays current room humidity; target is adjustable in Auto Mode.

Maintenance & Cleaning

Regular cleaning is essential to prevent mold and mineral buildup.

Daily: Empty and rinse the tank if not in use for more than 24 hours.
Weekly Cleaning:
- Unplug the unit and remove the tank.
- Clean the tank and base with a soft cloth and a mixture of white vinegar and water (1:1 ratio).
- Use a soft brush to clean the ultrasonic mist maker (metal disc at base).
- Rinse all parts thoroughly with clean water.
Deep Cleaning (Monthly): Soak removable parts in vinegar solution for 20 minutes, then scrub and rinse.
Drying: Allow all parts to air dry completely before reassembly.

Tip: Use distilled or demineralized water to reduce white dust and mineral deposits.

Safety Features

Automatic Shut-Off: Activates when water tank is empty or improperly placed. Low Water Indicator: Red LED light illuminates when water level is low. Overheat Protection: Internal sensor prevents motor overheating.

WARNING! Never operate the humidifier without water. Do not block the mist outlet or air intake. Unplug before cleaning or moving.

Care & Storage

When not in use for extended periods:

Unplug the unit.
Empty and thoroughly clean all parts as described above.
Allow all components to dry completely.
Reassemble and store in original box or a cool, dry place.

CAUTION! Do not store with water in the tank. Avoid exposure to extreme temperatures or direct sunlight.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. ETL Listed for safety standards. Copyright © Levoit. For support, visit www.levoit.com or contact customer service at 1-888-726-8522.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No mist output	Empty tank / Incorrect assembly	Fill tank with water. Ensure tank is securely placed on base.
Low mist output	Mineral buildup / Low setting	Clean the ultrasonic mist maker. Increase mist setting to MED or HIGH.
White dust around unit	Minerals in water	Use distilled or demineralized water. Clean the unit more frequently.
Unit not turning on	No power / Safety lock	Check power connection and outlet. Ensure tank is correctly seated.
Water leakage	Overfilled tank / Damaged seal	Do not fill above MAX line. Check tank and base seals for damage.
Unusual noise	Vibration / Debris in water	Place on a level surface. Use clean, filtered water.
Humidistat reading inaccurately	Sensor blocked / Location	Ensure sensor area is clean. Place unit away from direct mist, windows, and doors.

Reset: Unplug the unit for 60 seconds, then plug back in.

Service: 1-888-726-8522; www.levoit.com