1. Introduction
Thank you for choosing the Pursonic AD400-EOGS14 Ultrasonic Aromatherapy Diffuser & Essential Oil Set. This manual provides important information for the safe and efficient use of your new diffuser and essential oils. Please read it thoroughly before first use and retain it for future reference.
This set includes a 300ml ultrasonic diffuser designed to disperse a fine mist of water and essential oils, enhancing your environment with therapeutic aromas. It features 2 mist settings, 7 ambient LED light settings, and an auto shut-off function for safety. The set also comes with 14 therapeutic grade essential oils to help you create a relaxing and balanced atmosphere.
2. Important Safety Information
To ensure safe operation and prevent damage, please observe the following precautions:
- Always dilute essential oils with water before adding them to the diffuser.
- Keep the diffuser and essential oils out of reach of children and pets.
- Ensure the device is placed in a well-ventilated area during use.
- Do not leave the device unattended while it is operating.
- Use only the provided power adapter.
- Do not immerse the diffuser base in water or any other liquid.
- Unplug the diffuser from the power outlet before cleaning or when not in use.
- Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
3. Package Contents
Your Pursonic AD400-EOGS14 set includes:
- 1 x 300ml Ultrasonic Aromatherapy Diffuser
- 14 x 10ml Bottles of Therapeutic Grade Essential Oils:
- Bergamot
- Lemon
- Peppermint
- Tea Tree
- Cinnamon
- Lemongrass
- Rosemary
- Wintergreen
- Eucalyptus
- Mandarin
- Spearmint
- Lavender
- Mint
- Sweet Orange
- 1 x Power Cable (AC Adapter)
- 1 x Instructions Manual
4. Product Overview
Familiarize yourself with the components of your Pursonic diffuser:

Image 4.1: Pursonic AD400-EOGS14 Diffuser and Essential Oil Set. This image displays the complete set, including the diffuser unit and the collection of essential oil bottles.
- Diffuser Lid: Covers the water tank and mist outlet.
- Mist Outlet: Where the aromatic mist is released.
- Water Tank: Reservoir for water and essential oils (300ml capacity).
- Max Water Line: Indicates the maximum fill level for water.
- Air Outlet: For proper air circulation.
- Mist Button: Controls mist output (On/Off, Mist Settings).
- Light Button: Controls LED light settings (On/Off, Color Cycle, Fixed Color).
- Power Inlet: Connects to the AC adapter.
5. Setup Instructions
Follow these steps to set up your diffuser for first use:
- Placement: Place the diffuser on a flat, stable surface away from direct sunlight, heat sources, and electronic devices.
- Remove Lid: Gently remove the top cover of the diffuser.
- Add Water: Fill the water tank with clean tap water up to the "MAX" line (300ml capacity). Do not overfill.
- Add Essential Oils: Add 3-5 drops of your desired essential oil directly into the water tank. Adjust the quantity based on personal preference and room size.
- Replace Lid: Securely place the diffuser lid back onto the base. Ensure it is properly aligned.
- Connect Power: Plug the AC adapter into the power inlet at the bottom of the diffuser, then plug the adapter into a standard wall outlet.

Image 5.1: Filling the Pursonic Diffuser with Water. This image shows the diffuser's water tank being filled, illustrating the maximum fill line.
6. Operating Instructions
Once set up, operate your diffuser using the following steps:
6.1 Mist Control
- Press the Mist Button once for continuous mist.
- Press the Mist Button a second time for intermittent mist (e.g., 30 seconds on, 30 seconds off).
- Press the Mist Button a third time to turn off the mist function.
- The diffuser will automatically shut off when the water level is low.
6.2 Light Control
- Press the Light Button once to turn on the 7-color changing LED lights. The colors will cycle automatically.
- Press the Light Button repeatedly to cycle through and fix the light to a specific color.
- Press and hold the Light Button for 2 seconds to turn off the light function.

Image 6.1: Pursonic Diffuser in Operation. This image shows the diffuser actively producing mist and emitting ambient LED light.
7. Care and Maintenance
Regular cleaning helps maintain the diffuser's performance and extends its lifespan.
7.1 Daily Maintenance
- Unplug the diffuser from the power outlet.
- Remove the lid and carefully drain any remaining water from the water tank, avoiding the air outlet side.
- Wipe the inside of the water tank with a clean, soft cloth.
- Refill with fresh water for the next use.
7.2 Weekly Cleaning
- Unplug the diffuser and drain any water.
- Add 10ml of white vinegar to the water tank.
- Let it sit for 5-10 minutes to loosen mineral buildup.
- Gently wipe the inside of the tank, including the ultrasonic plate, with a soft brush or cotton swab. Do not scrub aggressively.
- Drain the vinegar and rinse the tank thoroughly with clean water.
- Wipe dry with a soft cloth.
Important: Do not use harsh detergents, solvents, or abrasive cleaners. Do not immerse the diffuser base in water.
8. Troubleshooting
If you encounter issues with your diffuser, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or weak mist. |
|
|
| Diffuser does not power on. |
|
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| Light function not working. |
|
|
9. Product Specifications
- Model Number: AD400-EOGS14
- Capacity: 300 ml
- Runtime: Up to 7 hours (continuous mist)
- Mist Settings: 2 (Continuous, Intermittent)
- Light Settings: 7-Color Changing LED, Fixed Color, Off
- Automatic Shut-off: Yes (when water level is low)
- Power Source: Corded Electric
- Wattage: 12 watts
- Product Dimensions: 8 x 6 x 10 inches
- Material: Plastic
- Included Components: Diffuser, 14 Essential Oils, Power Cable, Instructions Manual
- Manufacturer: PURSONIC
10. Warranty and Customer Support
10.1 Warranty Information
For detailed warranty information, please refer to the product packaging or visit the official Pursonic website. Keep your purchase receipt as proof of purchase for any warranty claims.
10.2 Customer Support
If you have any questions, concerns, or require assistance with your Pursonic AD400-EOGS14 diffuser, please contact Pursonic customer service. You can typically find contact information on the product packaging or on the official Pursonic website.