Introduction
This manual provides comprehensive instructions for the MAXWINER 3D Glass Essential Oil Diffuser. This ultrasonic aromatherapy device is designed to humidify air and diffuse essential oils, creating a pleasant environment. It features a unique 3D glass design, 7 LED color-changing lights, multiple timer settings, and an automatic shut-off function for safety.
Safety Precautions
Please read and follow these safety guidelines carefully to ensure safe operation and prevent damage to the device or injury.
- Always place the diffuser on a stable, flat, and water-resistant surface.
- Ensure the power cord is not damaged and is placed where it cannot be tripped over.
- Do not immerse the base unit in water or any other liquid.
- Fill the water tank with clean water below the maximum fill line. Overfilling can lead to fog or mist outlet issues.
- Do not open the diffuser cover when the unit is operating.
- Keep the diffuser out of reach of children and pets.
- Unplug the diffuser from the power outlet before cleaning or when not in use.
- Do not use corrosive detergents or harsh chemicals to clean the diffuser.
- If the diffuser emits an unusual smell, noise, or smoke, unplug it immediately and discontinue use.
Product Overview
The MAXWINER 3D Glass Essential Oil Diffuser combines aesthetic design with functional aromatherapy. Key features include a handmade glass vase, a 120ml water tank, and quiet ultrasonic operation.

Image: The MAXWINER 3D Glass Essential Oil Diffuser, highlighting its 5.1-inch width and 9-inch height, along with a list of features such as handmade glass, 120ml water tank, 4 timer settings, whisper quiet operation, waterless auto shut-off, and fashionable design.
The diffuser features two control buttons on its base: one for mist control and timer settings, and another for light control.

Image: A collection of MAXWINER 3D Glass Essential Oil Diffusers displaying various LED colors. The image also labels the 'Mist Button' with timer options (3H, 2H, 1H, 0.5H) and the 'Light Button' with options for cycling through 7 colors, fixing on a specific color, and dim/bright mode.
Setup
- Unpack: Carefully remove the diffuser and all accessories from the packaging.
- Placement: Place the diffuser on a firm, flat, and level surface away from direct sunlight, heat sources, and air conditioning vents.
- Remove Cover: Gently lift the glass cover and the inner lid from the base.
- Add Water: Using a measuring cup, fill the water tank with clean tap water. Do not exceed the maximum water level line indicated inside the tank (120ml capacity).
- Add Essential Oil: Add 2-3 drops of your preferred essential oil directly into the water tank. Adjust the amount based on personal preference.
- Replace Covers: Place the inner lid back onto the base, ensuring it is properly seated. Then, carefully place the glass cover back onto the base.
- Connect Power: Plug the AC adapter into the power input jack on the bottom of the diffuser base, then plug the adapter into a standard wall outlet.
Operating Instructions
Once set up, operate your diffuser using the two buttons on the front of the base.
Mist Button (Left Button)
- First Press: Turns on the mist with a 0.5-hour timer. The corresponding indicator light will illuminate.
- Second Press: Changes the timer to 1 hour.
- Third Press: Changes the timer to 2 hours.
- Fourth Press: Changes the timer to 3 hours.
- Fifth Press: Turns off the mist.
Light Button (Right Button)
- First Press: Turns on the LED lights, cycling through 7 colors automatically.
- Subsequent Presses: Allows you to fix the light on a specific color. Continue pressing to cycle through the available colors.
- Long Press (2 seconds): Adjusts the brightness of the current color (Dim/Bright mode).
- Press until off: Turns off the LED lights.
Automatic Shut-Off
The diffuser is equipped with an automatic shut-off safety feature. When the water level is too low or completely depleted, the unit will automatically stop misting to prevent overheating and damage. This ensures safe operation, even if you forget to turn it off.

Image: A visual guide illustrating the importance of water level. It shows that exceeding the maximum water line results in no or low mist, while keeping the water below the line produces a larger mist. This highlights the auto shut-off mechanism when water runs out.
Maintenance
Regular cleaning is essential to ensure optimal performance and longevity of your diffuser. Clean the diffuser at least once a week, especially if you use different essential oils.
- Unplug: Always unplug the diffuser from the power outlet before cleaning.
- Drain Water: Remove the covers and carefully pour out any remaining water from the 'DRAIN SIDE' of the water tank to avoid water entering the air outlet.
- Wipe Tank: Use a soft cloth or cotton swab with a small amount of mild dish soap to gently wipe the inside of the water tank and the ultrasonic plate.
- Rinse: Rinse the tank with clean water, being careful not to get water into the air outlet.
- Dry: Wipe all parts dry with a clean, soft cloth. Do not leave water or moisture in the device when storing.
- Avoid Chemicals: Do not use corrosive cleaners, alcohol, or harsh chemicals, as these can damage the diffuser.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or low mist output | Water level too high or too low; ultrasonic plate dirty; cover not properly seated. | Adjust water level to below the MAX line. Clean the ultrasonic plate. Ensure covers are securely in place. |
| No light or lights not changing | Light function not activated; power issue. | Press the Light button to activate or cycle through colors. Check power connection. |
| Unit does not turn on | No power; water level too low (auto shut-off activated). | Ensure power adapter is securely plugged into both the diffuser and the wall outlet. Add water to the tank. |
| Water overflow or leakage | Water level exceeds MAX line; diffuser tilted. | Reduce water level. Ensure the diffuser is on a flat, stable surface. |
Specifications
- Brand: MAXWINER
- Model Number: 3D1211 (EOD121)
- Capacity: 120 Milliliters
- Power Source: Corded Electric
- Material: Glass
- Product Dimensions: 5.1"L x 5.1"W x 9"H
- Wattage: 10 watts
- Auto Shutoff: Yes
- Light Source Type: LED (7 Colors)
- Coverage: Medium to Large Room
- Item Weight: 1.65 pounds (0.75 Kilograms)
Warranty and Support
MAXWINER stands behind the quality of its products. This diffuser comes with a one-year warranty from the date of purchase.
- Warranty Period: One (1) year from the original purchase date.
- Refund Guarantee: A 30-day refund guarantee is provided for initial satisfaction.
- After-Sales Service: Lifetime after-sales service is available for product support.
If you are not 100% satisfied with the performance of your product or encounter any issues, please contact MAXWINER customer service for assistance. We are committed to providing replacements or solutions to ensure your satisfaction.