Levoit Humidifier LUH-A601S-WUSB Manual

The Levoit LUH-A601S-WUSB is a 6-liter ultrasonic cool mist humidifier with a 360° nozzle, essential oil diffuser tray, adjustable mist levels (low/medium/high), night light with auto-off, smart humidity sensor, timer function (1-12 hours), and USB power option. It features a top-fill design, quiet operation, and easy-clean construction. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation & Setup 3. First-Time Use 4. Specifications 5. Controls and Settings 6. Using Essential Oils 7. Maintenance & Cleaning 8. Smart Features 9. Safety Information 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 6L water tank, ultrasonic mist generator, 360° adjustable nozzle, essential oil tray, control panel with LED display, night light, humidity sensor, and USB power port.

Feature	Description
6L Water Tank	Top-fill design for easy refilling; provides up to 60 hours of runtime
360° Nozzle	Adjustable mist direction for even humidity distribution
Essential Oil Tray	Separate tray for adding aromatherapy oils (not in water tank)
Adjustable Mist Levels	Low, Medium, High settings for customized humidity output
Smart Humidity Sensor	Auto mode maintains desired humidity level (40%-60% RH)
Night Light	Soft LED light with on/off option; auto-off in sleep mode
Timer Function	Set operation for 1-12 hours; auto shut-off
USB Power Option	Can be powered via USB-C cable (adapter not included)
Quiet Operation	Ultrasonic technology operates below 30dB
Easy-Clean Design	Wide opening and smooth surfaces for simple cleaning

Installation & Setup

Unpack and inspect all parts. Place on a flat, stable, and waterproof surface away from electronics.

Remove tank: Lift water tank from base unit.
Fill with water: Open top cap, fill with cool, clean tap or distilled water (max line).
Reassemble: Place tank back on base; ensure it sits securely.
Power connection: Plug USB-C cable into base and connect to 5V/2A adapter or USB port.
Essential oils: Add a few drops to the separate tray only (not into water tank).

WARNING! Use only clean, cool water. Do not add oils directly to water tank. Keep away from walls and furniture to prevent moisture damage.

First-Time Use

Power on the humidifier; follow initial setup steps.

Initial fill: Fill tank completely for first use to prime the system.
Power on: Press POWER button; default mist level is Medium.
Set mode: Press MODE to choose between Manual (Low/Med/High) or Auto (smart sensor).
Adjust mist: Use MIST +/- buttons to set output level in manual mode.
Set timer: Press TIMER to set 1-12 hours; unit will auto shut-off.
Night light: Press LIGHT button to toggle night light on/off.

CAUTION! Ensure unit is on a level surface. Do not operate without water. First mist may take 30-60 seconds to appear.

Specifications

Model: LUH-A601S-WUSB
Tank Capacity: 6 liters (1.58 gallons)
Runtime: Up to 60 hours (low setting)
Mist Output: Up to 300 mL/hour
Coverage Area: Up to 505 sq ft (47 sq m)
Noise Level: <30 dB
Power Input: USB-C, 5V/2A (10W)
Humidity Control: Smart sensor with 40%-60% RH range
Timer: 1-12 hours programmable
Dimensions: 10.2" x 7.1" x 10.2" (259 x 180 x 259 mm)
Weight: 3.3 lbs (1.5 kg) empty

Controls and Settings

Control Panel: POWER, MODE, MIST +/-, TIMER, LIGHT. LED display shows settings, humidity level, and timer.

Modes: Manual (adjust mist level directly), Auto (smart sensor maintains set humidity). Mist Levels: Low (150 mL/h), Medium (225 mL/h), High (300 mL/h). Timer: 1-12 hours in 1-hour increments. Night Light: Soft white LED; can be turned off. Display: Shows current humidity, mist level, timer, and mode.

Using Essential Oils

Only use the dedicated essential oil tray. Do not add oils to water tank.

Ensure humidifier is off and unplugged.
Pull out the essential oil tray located near the nozzle.
Add 3-5 drops of 100% pure essential oil to the tray.
Slide tray back into place.
Operate humidifier normally; aroma will diffuse with mist.

Tip: Clean oil tray regularly with water and mild soap to prevent clogging and residue buildup.

Maintenance & Cleaning

Regular cleaning prevents mold and mineral buildup. Clean every 1-2 weeks with daily use.

Unplug unit and empty all water.
Disassemble: Remove tank, base cover, and mist nozzle.
Clean surfaces: Use soft cloth with mild soap and water. Do not use abrasive cleaners.
Descale (if needed): Use white vinegar solution (1:1 with water) to remove mineral deposits. Rinse thoroughly.
Dry completely before reassembly and storage.

CAUTION! Never immerse base unit in water. Do not use harsh chemicals. Ensure all parts are dry before use.

Smart Features

Auto Mode: Humidity sensor monitors room humidity and adjusts mist output to maintain set level (default 50% RH). Timer: Program operation for 1-12 hours; unit beeps and shuts off. Night Mode: Press and hold LIGHT for 3 seconds to dim display and reduce noise for sleep.

Safety Information

Read all instructions before use. Use only cool, clean water. Do not operate without water. Keep out of reach of children. Do not block mist nozzle. Unplug before cleaning or maintenance. Do not use if cord or plug is damaged. Use only recommended USB power source (5V/2A).

WARNING! Risk of electric shock. Do not disassemble or attempt repairs. Contact Levoit for service.

Regulatory Information

FCC Part 15 Compliance: This device complies with Class B digital device limits. UL Listed: Meets safety standards for household use. Copyright © 2023 Levoit. All trademarks are property of VeSync. For support, visit support.levoit.com or contact 1-888-726-8520.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No mist output	Empty tank/low water	Refill water tank; ensure tank is properly seated.
Weak mist	Mineral buildup/clog	Clean nozzle and ultrasonic plate with vinegar solution.
Unit not powering on	Power connection	Check USB cable and adapter; ensure proper connection.
Error code E1/E2	Sensor/water level fault	Unplug, empty tank, refill with clean water. Restart.
Water leakage	Improper assembly/crack	Check tank seal and base for cracks; reassemble properly.
Unusual noise	Vibration/mineral deposits	Ensure unit is on level surface; clean ultrasonic plate.
Display not working	Power/display issue	Reset by unplugging for 1 minute; check power source.

Reset: Unplug for 1 minute to reset all settings to default.

Service: 1-888-726-8520; support.levoit.com