Xiaomi liquid soap dispenser: how to pour soap without errors

Xiaomi’s liquid soap dispensers have become a popular solution for bathrooms and kitchens thanks to their minimalist design, automation and integration into the Mi Home ecosystem. However, even such a simple device has nuances in operation – especially when it comes to first refilling or replacing detergent. Incorrect pouring can lead to clogs, leaks or even sensor breakdowns.

In this article, we will not only discuss the basic instructions for filling the Xiaomi Mijia Automatic Soap Dispenser dispenser (and its modifications), but also reveal the pitfalls: what tools are suitable, how to avoid foam in the mechanism, what to do if you fail to E1, and why the device sometimes “refuses” to recognize new portions of soap. If you just bought a dispenser or encountered problems with using it, here you will find all the answers.

What Xiaomi dispensers are and what are their differences

Xiaomi has released several versions of automatic dispensers of liquid soap, which are similar in appearance, but have technical differences.

• 🔹 Mijia Automatic Soap Dispenser (first generation) - basic version with a capacity of 300 ml, infrared sensor and power from 4 batteries AA. Supports only manual dosage (pressing the button).
• 🔹 Mijia Smart Soap Dispenser (second generation) - An improved version with a capacity of 400 ml, support for the Mi Home application, adjusting the portion volume (1-3 ml) and an indication of the charge level. USB-C).

Important: the fueling instructions for foam and liquid dispensers are different. If you pour ordinary liquid soap into the model for foaming (or vice versa), this will lead to clogs or incorrect operation of the sensor. Check the markings on the device body before refueling!

If you are unsure of your dispenser model, check the label on the bottom of the device or in the Mi Home app (Devices section).Pouring the wrong product is the most common cause of Xiaomi dispensers failures that is not covered by warranty.

What liquid soap is suitable for Xiaomi dispensers: selection criteria

Not all detergents are compatible with automatic dispensers.

• 🧴 Viscosity: Optimal density, like a regular liquid soap (like Dove or Fa), too thick gels (like Sanex) or abrasive particle products (scrabs) clog the pump.

Recommended brands (according to user reviews): Dove, Lifebuoy, Soft & Gentle, AOS. From budget options, the Clean Line (series for sensitive skin) is suitable. For foam dispensers Xiaomi Youpin is better to use specialized tools, for example, “hand foam” from Amway.

⚠️ Warning: If you use homemade soap (e.g., Castilian or household soap), be sure to strain it through gauze before pouring. Small undissolved particles will clog the dispenser valve after 2-3 uses.

For the compatibility test, pour 10 ml of the product into a transparent glass and add 10 ml of water. If after 5 minutes there is sediment or delamination, this soap is not suitable for an automatic dispenser.

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If you want to use an antiseptic, choose an alcohol-based glycerol product (such as Sterillium) that is less aggressive to seals than pure alcohol.

Step-by-step: how to pour liquid soap into the dispenser Xiaomi

The refueling process seems simple, but many users make mistakes during the preparation stage.

1. Turn off the power: remove the batteries or disconnect the USB-C cable (for models with built-in battery) and prevent the sensor from accidentally triggering during refueling.
2. Remove the top cover: press the latch (usually located at the back) and pull the lid upwards. In some models, the lid is unscrewed counterclockwise.
3. Remove the tank: carefully get out the soap container. If the tank is boiling (occurs after using thick gels), do not pull it by force - place the dispenser under warm water for 2-3 minutes.
4. Rinse the tank: even if you fill the same type of soap, rinse the tank with warm water and dry it, and the residues of the old remedy can react with the new one, causing the cereal to form.
5. Pour the soap slowly: pour it to the MAX label (usually 300-400 ml). Do not add "to the tie" - when heated, the soap expands and can leak.
6. Remove the air bubbles: After pouring, tap the tank slightly and wait 1-2 minutes for the bubbles to rise. Then add the soap to the mark.
7. Put the dispenser in place, close the lid before you click. For models with a battery, plug the charge for 10-15 minutes before first use.

After filling, check the dispenser: bring your hand to the sensor at a distance of 5-10 cm If the portion of soap comes out unevenly or with a delay, then there is air in the system.

Frequent mistakes in refueling and how to avoid them

Even experienced users sometimes have problems after pouring soap, and here are the most common mistakes and solutions:

• 🚫 Leakage of soap from under the lid: causes - overflow above the mark MAX Solution: wipe the body with a dry cloth, check the sealing ring on the lid (grease with silicone lubricant if necessary).
• 🚫 The dispenser does not recognize the new soap: the sensor can freeze when a sharp change in the type of product (for example, after an antiseptic) Solution: reset the settings through the Mi Home app or hold the power button for 10 seconds.
• 🚫 Soap comes out in jerks or drips: the system has accumulated air. Solution: press the dosage button manually several times until the flow stabilizes.
• 🚫 Mistake. E1 on display: means valve clogged. Solution: rinse the pump with distilled water (instruction below).

If the dispenser stopped working after refueling, check:

1. Polarity of batteries (for models on AA)
2. Battery charge (for Mijia Smart)
3. Clean infrared sensor (wipe it with a cotton swab dipped in alcohol).

⚠️ Warning: Never use aggressive detergents (such as Mole or Domestos) to flush the tank. They destroy plastic and seals. Maximum - weak solution of vinegar (1 tbsp. spoon per 1 liter of water).

How to wash the dispenser Xiaomi: cleaning from blockages and plaque

Regular cleaning prolongs the life of the dispenser and prevents errors such as E1 or E2. The recommended frequency is every 1-2 months (or more often if you use thick gels).

Step-by-step cleaning:

1. Disassemble the dispenser: remove the lid, remove the tank and disconnect the pump (in most models it is attached to the latches).
2. Rinse the tank: use warm water with a mild detergent (for example, "Fairy"). To remove plaque, you can soak the container in a solution of citric acid (1 hour spoon per 1 liter of water) for 30 minutes.
3. Clean the pump: Pass 50–100 ml of distilled water through it (pour into the tank and turn on the dispenser until clean water goes). Use a solution of vinegar (1:10 with water) to remove lime plaque, but no longer than 1 minute!

Dry the details.

Grease the seals

WD-40 Specialist

For models with a battery (Mijia Smart) after cleaning, calibrate in the Mi Home app:

1. Go to the device settings.
2. Select "Pump Calibration."
3. Follow the instructions on the screen (usually 2-3 test taps are required).

If you want maximum reliability and smart features don't matter, look at Simplehuman, which is less fastidious with soap and easier to clean. The Umbra Trig (mechanical, no electronics) is the budget option.

FAQ: Answers to Frequent Questions About Xiaomi Dispensers