Introduction
Thank you for purchasing the Yaledi Essential Oil Diffuser. This device combines the benefits of aromatherapy with a unique fireplace flame effect, creating a soothing and aesthetically pleasing environment. This manual provides detailed instructions for safe operation, setup, maintenance, and troubleshooting to ensure optimal performance and longevity of your diffuser.

Image: The Yaledi Essential Oil Diffuser, showcasing its unique fireplace flame effect and sleek design.
Safety Information
Please read all safety warnings and instructions carefully before using this product to prevent injury or damage.
- Avoid direct skin contact with undiluted essential oils.
- Keep out of reach of children and pets.
- Ensure proper ventilation during use.
- Always turn off the device when not in use and unplug it from the power source.
- Do not immerse the unit in water or any other liquid.
- Use only the provided power adapter.
- Do not block the mist outlet.
Package Contents
Verify that all items are present in the package:
- Yaledi Essential Oil Diffuser (White)
- USB Power Cable
- User Manual

Image: The Yaledi Essential Oil Diffuser, USB power cable, and user manual as included in the packaging.
Product Features
- Fireplace Shape & Flame Light: Minimalist design with ambient flame lighting, making the mist appear like a real flame. Functions as a diffuser, ornament, or night light.
- Seven Color Changing Lights & Fixed Light Color: Lights can be turned on individually with two modes: seven-color cyclic lighting and fixed-color lighting.
- Ultrasonic Atomization & Super Quiet Design: Delicately spreads essential oil molecules into the air. Operating sound does not exceed 35 decibels, ensuring quiet operation.
- 150ml Capacity & Timing Function: 150ml water tank provides up to 6 hours of continuous diffusion. Timing function supports 1-hour, 3-hour, and 5-hour settings.
- Automatic Power-Off Protection: Built-in smart chip automatically shuts down the device when water runs out, ensuring safety.

Image: The diffuser producing a mist that mimics a fireplace flame, highlighting its aesthetic appeal.

Image: The diffuser showcasing its ability to display seven different ambient light colors, with options for fixed or cycling modes.

Image: A person sleeping peacefully next to the diffuser, illustrating its ultra-quiet operation and suitability for bedrooms.

Image: A hand pouring water into the diffuser, demonstrating its 150ml capacity and compact size.

Image: The diffuser with a graphic representation of a shield, symbolizing its automatic power-off safety feature when water levels are low.
Setup Guide
Follow these steps to set up your Yaledi Essential Oil Diffuser:
- Place the diffuser on a flat, stable surface.
- Carefully remove the top cover of the diffuser.
- Fill the water tank with up to 150ml of clean tap water. Do not exceed the MAX fill line.
- Add a few drops (3-5 drops recommended) of your favorite essential oil into the water tank. (Essential oils not included)
- Replace the top cover securely.
- Connect the USB power cable to the diffuser and plug the other end into a suitable USB power source (e.g., USB adapter, computer USB port).
Operation
Your Yaledi diffuser features simple controls for mist and light functions.
Mist and Flame Light Control
- Press the Fog Button once to turn on the mist and the flame light effect.
- Press the Fog Button again to turn off the mist and flame light.
Light Control (7 Colors)
- Press the Light Button to cycle through the seven color-changing lights.
- Press the Light Button repeatedly to select and fix a specific color.
- Press and hold the Light Button for 2 seconds to turn off the light function.
Timer Function
- The diffuser supports timer settings for 1 hour, 3 hours, and 5 hours.
- Refer to the specific button on your device for timer activation (usually a dedicated timer button or combined with the fog button).
Maintenance
Regular cleaning ensures the longevity and efficient operation of your diffuser.
- Daily Maintenance: After each use, empty any remaining water from the tank. Wipe the inside of the water tank with a clean, damp cloth.
- Weekly Cleaning: For a more thorough cleaning, add a small amount of white vinegar (about 10ml) to the water tank and let it sit for 5-10 minutes. Gently wipe the inside with a soft brush or cotton swab to remove any mineral buildup. Rinse thoroughly with clean water, ensuring no vinegar residue remains.
- Mist Outlet: Gently wipe the mist outlet with a cotton swab dipped in rubbing alcohol to prevent clogging.
- Exterior: Wipe the exterior of the diffuser with a soft, dry cloth.
- Always ensure the diffuser is unplugged before cleaning.
- Allow all parts to dry completely before the next use or storage.
Troubleshooting
If you encounter any issues with your diffuser, please refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or weak mist | Insufficient water; Water level too high; Clogged ultrasonic plate; Unit not plugged in correctly. | Add water to appropriate level; Reduce water level; Clean the ultrasonic plate; Ensure power cable is securely connected. |
| No power | Power cable loose; No power from outlet/USB port. | Check power cable connection; Try a different outlet/USB port. |
| Light not working | Light function turned off; Malfunction. | Press the Light Button to activate; Contact customer support if issue persists. |
| Unusual noise | Water level too low; Unit not on a flat surface. | Add water; Place the unit on a stable, flat surface. |
Specifications
Detailed specifications for the Yaledi Essential Oil Diffuser:
| Feature | Detail |
|---|---|
| Brand | Yaledi |
| Model Name | 150ml Fireplace Flame Essential Oil Diffuser |
| Model Number | DQ709 |
| Color | White |
| Capacity | 150 Milliliters |
| Runtime | Up to 6 hours |
| Power Source | Corded Electric |
| Wattage | 12 watts |
| Noise Level | 25-35 decibels |
| Special Features | Automatic Power Off Without Water, Seven Color Changing Lights, Silent Operation, Timer Setting |
| Product Dimensions | 10.12"L x 2.76"W x 2.95"H |
| Material | Plastic |
Warranty and Support
Yaledi stands behind the quality of its products. For warranty information and customer support, please refer to the contact details provided with your purchase or visit the official Yaledi website.
If you have any questions or require assistance, do not hesitate to contact our customer service team. Please have your model number (DQ709) and purchase details ready when contacting support.