TMEHM A4
TMEHM A4 Fireplace Flame Air Diffuser Humidifier User Manual
Model: A4 | Brand: TMEHM
1. Introduction
Thank you for choosing the TMEHM A4 Fireplace Flame Air Diffuser Humidifier. This device combines the benefits of an ultrasonic humidifier and an aromatherapy diffuser with a unique simulated fireplace flame effect. It is designed to enhance your environment with moisture, pleasant aromas, and a visually appealing ambiance. Please read this manual thoroughly before use to ensure proper operation and maintenance.
2. Safety Information
- The maximum water capacity of the water tank is 150 milliliters. Do not exceed the maximum level mark to avoid affecting the atomization effect.
- Use clean water for the humidifier to prevent damage from impurities.
- Only use mild or water-soluble essential oils. Avoid corrosive or highly concentrated oils, as they may damage internal components.
- No power adapter is included. It is recommended to use an adapter with an output of 1A-2A. High-power adapters are prohibited to prevent potential damage.
- Do not pour water into the mist outlet when adding or emptying water. Water intake in this area may temporarily stop the fan from working.
- If there is no fog, it may indicate too much water. Pour out some water until the fog effect is restored.
3. Package Contents
- TMEHM A4 Fireplace Flame Air Diffuser Humidifier
- Remote Control
- USB-C Power Cable (Power adapter not included)
- User Manual
4. Product Overview
Familiarize yourself with the main components of your diffuser humidifier.

Figure 1: Front view of the TMEHM A4 Fireplace Flame Air Diffuser Humidifier, showing the simulated flame effect and included remote control.
Components:
- Mist Outlet: Where the ultrasonic mist is diffused.
- Water Tank: 150ml capacity for water and essential oils.
- Flame Screen: Displays the simulated fireplace flame effect.
- Control Buttons: Located on the back of the device for manual operation.
- USB-C Power Interface: For connecting the power cable.
- Remote Control: For convenient adjustment of settings.

Figure 2: Visual guide for correctly adding and pouring water, highlighting the maximum fill line and physical button controls.
5. Setup
- Unpack: Carefully remove all components from the packaging.
- Placement: Place the diffuser on a flat, stable surface.
- Add Water: Remove the top cover. Fill the 150ml water tank with clean water up to the maximum level mark. Do not exceed this line. Avoid pouring water into the mist outlet.
- Add Essential Oil: Add 3-5 drops of your preferred water-soluble essential oil directly into the water tank.
- Replace Cover: Securely place the top cover back onto the diffuser.
- Connect Power: Plug the USB-C power cable into the diffuser and connect the other end to a 1A-2A USB power adapter (not included).

Figure 3: Demonstrating the addition of essential oils to the water tank for aromatherapy.
6. Operating Instructions
The diffuser can be operated using the physical buttons on the back or the included remote control.
6.1. Power On/Off
- Physical Button: Press the power button on the back of the device to turn it on or off.
- Remote Control: Press the ON/OFF button on the remote.
6.2. Mist Control (Humidifier Function)
- Physical Button: Press the Mist Control button (often indicated by a wave or mist icon) on the back to cycle through mist modes or turn off the mist.
- Remote Control: Press the Mist button (often indicated by three wavy lines) to turn on the fog color changing. Press again to lock the color.
6.3. Flame Light Control
- Physical Button: Press the Flame Screen Control button (often indicated by a flame icon) on the back to turn on/off the flame effect or change its mode.
- Remote Control: Press the Light button (often indicated by a sun icon) to turn on the fireplace light changing. Press again to lock the color. The device features 7-color cycling, breathing mode, and single-color fixation.

Figure 4: The 7-color flame effect options available on the diffuser.
6.4. Timer Function
- Physical Button: Press the Timer button on the back to set the automatic shut-off time to 2, 4, or 5 hours.
- Remote Control: Use the Timer buttons (1H, 3H, 5H, ON) on the remote to select the desired operating duration. The device will automatically shut off when the timer expires or when water runs out.

Figure 5: The timer function allows for automatic shut-off, ideal for use during sleep.
7. Maintenance
Regular cleaning ensures optimal performance and extends the lifespan of your diffuser humidifier.
- Empty Water: Before cleaning, ensure the device is unplugged and empty any remaining water from the tank.
- Wipe Down: Wipe the interior and exterior of the water tank with a soft, damp cloth.
- Avoid Harsh Chemicals: Do not use abrasive cleaners or corrosive liquids, as they can damage the device.
- Air Dry: Allow all parts to air dry completely before reassembling or storing.
8. Troubleshooting
If you encounter any issues, please refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or weak mist | Insufficient water in tank; water level too high; mist outlet blocked; device not powered on. | Ensure water is between min/max lines; pour out excess water; check for blockages in mist outlet; confirm power connection. |
| Device not turning on | No power; loose connection; incorrect power adapter. | Check power cable connection; ensure adapter is 1A-2A; try a different power outlet. |
| Remote control not working | Battery depleted; plastic insulation tab not removed. | Replace remote battery; remove the plastic insulation covering the remote battery compartment. |
| Unusual noise | Water level too low; device not on a flat surface. | Add water; place the device on a stable, flat surface. |
9. Specifications
| Brand | TMEHM |
| Model Name | A4 |
| Color | White |
| Product Dimensions | 10.3"L x 4"W x 3.8"H |
| Item Weight | 12.8 ounces |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Material Type Free | BPA Free |
| Capacity | 150 Milliliters |
| Power Source | Corded Electric (USB-C) |
| Wattage | 5 watts |
| Special Feature | Imitation Fireplace Light Display, Auto Shutoff, Timer |
| Auto Shutoff | Yes |
10. Official Product Videos
Watch these official videos from the seller for a visual guide on using your TMEHM A4 diffuser humidifier.
Video 1: A comprehensive overview of the fireplace diffuser, showcasing its 7 colors and cozy ambiance. This video demonstrates the product's features and visual effects.
Video 2: A detailed demonstration of the Fireplace Flame Oil Aroma Diffuser. This video highlights the flame effect and mist output.
11. Warranty and Support
For any questions or concerns regarding your TMEHM A4 Fireplace Flame Air Diffuser Humidifier, please contact TMEHM customer support. You can typically find contact information on the product packaging or by visiting the official TMEHM store on Amazon. TMEHM is committed to providing high-quality products and customer satisfaction.
For additional support, please visit the TMEHM Store.
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