How to properly fill up the automatic dispenser of liquid soap Xiaomi Mijia: instructions with nuances

Xiaomi’s automatic liquid soap dispensers are not just a bathroom or kitchen accessory, but a full-fledged smart device that saves detergent consumption and makes hygiene procedures more comfortable. Mijia series models (for example, Mijia series, LXMDJ01YM or LXMDJ02YM) equipped with infrared sensors, contactless control and even backlight, but their key advantage is the ease of refueling, which nevertheless raises questions among new users.

Many people mistakenly think that filling soap in a tank is enough, but there are nuances in practice, from diluting the concentrate properly to calibrating the sensor after changing the liquid. In this article, we will analyze the step-by-step process for all versions of Xiaomi Mijia dispensers, explain which soap is best, and give tips for solving typical problems - for example, when the device does not recognize a new refill or gives too much / little funds.

If you have just purchased a dispenser or have difficulty using it, this guide will help you avoid errors and extend the life of the device. And for experienced users, we have prepared hidden chips that are not written about in the official manual (for example, how to reset the sensor settings or use a dispenser with thick gels).

1. What models of Xiaomi Mijia dispensers exist and how they differ

There are several versions of Xiaomi liquid soap dispensers on the market, and their refilling may vary slightly.

• 🔹 Xiaomi Mijia LXMDJ01YM — The first version, with a capacity of 300 ml, infrared sensor and white light, suitable for liquid soaps and antiseptics.

The main difference in refueling is the type of tank:

• 💧 V LXMDJ01YM tank removable, but requires careful extraction so as not to damage the sealing ring.
• 🔋 V LXMDJ02YM The tank is fixed by latches, and the sensor is automatically calibrated after fluid replacement.
• 📱 In the Pro version there is a function of automatic notification of low soap level through the application.

Important: if you have a model with a built-in battery (for example, LXMDJ01YM), Make sure the device is turned off before refueling, which will prevent false alarms on the sensor (LXMDJ02YM) it's not required.

2.What liquid soap is suitable for Xiaomi Mijia dispensers

Not all detergents work equally well with automatic dispensers.

• 🧼 Consistency: medium viscosity liquid (like water) is optimal. Thick gels or cream soap can clog the pump.
• 💦 pH level: neutral (5.5-7.0) Alkaline or acidic means reduce the life of seals.
• 🚫 Prohibited components: abrasive particles, bleach, solvents (for example, acetone).

Best suited:

• 🧴 Special liquids for automatic dispensers (for example, Xiaomi Mijia Hand Soap Refill).
• 🧼 Common liquid soap (e.g. Dove, Palmolive) diluted with water in a 1:1 ratio.
• 🦠 Alcohol-based antiseptics (up to 70% alcohol), but only for models labeled Alcohol-Compatible.

Critical nuance: if you use concentrated soap (for example, for washing), it must be diluted to the consistency of water - otherwise the pump dispenser will fail in 2-3 months.

⚠️ Warning: If after filling, the dispenser starts spitting or jerking out soap, it's probably too thick.

3. Step-by-step instructions: how to refuel the Xiaomi Mijia dispenser

The refueling process is the same for most models, but there are nuances depending on the type of tank.

Step 1. Remove the tank.

• 🔽 In models LXMDJ01YM/LXMDJ02YM press the latch at the bottom of the dispenser and pull the tank up.
• 🔄 In the Pro version, the tank is unscrewed counterclockwise.

Step 2.Wash the tank (if this is not the first refueling)

• 💧 Pour warm water, close the lid and shake the tank.
• 🧽 Use a soft sponge to clean the walls (do not scratch!).
• 🚿 Rinse thoroughly – residues of old soap can react with new.

Step 3. Pour in the soap.

• 📏 Pour the liquid to the mark MAX (usually 250-300 ml).
• 🌀 If the soap is thick, dilute it with water in a 1:1 ratio and mix it.
• ⚠️ Do not add to the neck - this will lead to leaks when the pump is working.

Step 4: Set the tank back up

• 🔄 Insert the tank before clicking (in models with latches) or twist clockwise (in the Pro version).
• 🔍 Check that the sealing ring is not skewed.

Step 5: Calibration of the sensor (only for LXMDJ02YM and pro)

Important: After filling the new soap, the dispenser can give out air in the first 2-3 taps, which is normal. If the problem persists longer, flush the pump (instruction in section 6).

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If the dispenser starts to work noisier after filling, check if air has entered the pump tube. To do this, tilt the device at an angle of 45.° Press the sensor 3-4 times.

4.Typical gas station errors and how to avoid them

Even experienced users sometimes make mistakes that lead to breakdowns or malfunctioning of the dispenser.

❌ Mistake 1: Using undiluted thick soap

Symptoms: the pump is buzzing, but the soap does not come out or is jerking.

Solution: Wash the tank and pipe with warm water, then fill the diluted soap (proportion 1:1).

❌ Mistake 2: Soap overflow above the label MAX

Symptoms: leaks from under the lid, false alarms of the sensor.

Solution: pump out the excess with a syringe and check the sealing ring.

❌ Mistake 3: Filling with cold soap

Symptoms: the pump is intermittent, portions are unstable.

Solution: Warm the soap to room temperature (e.g., hold the bottle in warm water for 5 minutes).

❌ Mistake 4: Ignoring the tank wash

Symptoms: unpleasant smell, change in color of soap, clogged sprayer.

Solution: Wash the tank after each 3-4 refill (use 1:10 vinegar solution for disinfection).

⚠️ Warning: If the dispenser flashes red after refueling, it is a signal that the pump is blocked.

5. How to wash the dispenser if it clogged

Over time, soap deposits may accumulate in the pump tube or sprayer, especially if thick or concentrated means were used.

Step 1: Preparation

• 🔌 Disconnect the dispenser from power (remove the batteries or disconnect the batteries). USB-cable).
• 💦 Prepare a warm soap solution (water) + liquid soap 1:10) or acetic solution (1:10 for disinfection).

Step 2. Disassembly

• 🔧 Remove the tank (as in refueling).
• 🔍 Remove the spray nozzle (neatly pull it up or unscrew it counterclockwise).

Step 3: Flushing

• 💧 Pour the solution into the tank, set it back and press the sensor 10-15 times so that the liquid passes through the pump.
• 🧼 For deep cleaning, use a needle syringe to flush the pump tube (inject the solution into the sprayer hole).

Step 4: Drying and assembly

If the clog is heavy:

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Do not use sharp objects (needles, toothpicks) to clean the sprayer - this will damage the pump membrane. If the clog is not fixed, contact the service center.

6. Additional chips: how to improve the work of the dispenser

Besides basic refueling, Xiaomi Mijia dispensers have hidden features that few people know about:

🔹 Sensitivity setting

In models LXMDJ02YM and Pro can be adjusted to the response distance:

🔹 Use of aromatic additives

To give the dispenser a pleasant-smelling soap, add 2-3 drops of essential oil (such as lavender or citrus) to the tank. Importantly, the oil should be water-soluble (do not use pure oils without dilution!).

🔹 Economic regime

In the Mi Home app (for the Pro version), you can reduce the portion of soap from 1.5 ml to 0.8 ml, which will increase the service life of the refueling by 30-40%.

🔹 Alternative uses

The dispenser is not only suitable for soap:

• 🧴 Hand lotion (dilute with water 1: 1).
• 🧼 Makeup flushing fluid.
• 🧼 Disinfectant solution for surfaces (if the model supports alcohol).

⚠️ Warning: If you fill the dispenser with lotion or cream, wash it every 2 weeks - otherwise the pump will get clogged with fatty deposits.

7. Frequent questions and problem-solving

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If the dispenser stopped working after washing, check if the water has entered the electronic unit, in which case, dry the device for 24 hours in an upright position (sprayer down).