How to pour liquid soap into the dispenser Xiaomi: instructions with photos and tips

Xiaomi's automatic liquid soap dispensers are not just a fashionable gadget, they are real life relief: they save cleaning products, maintain hygiene (no need to touch the bottle with dirty hands), and look stylish in the interior of the bathroom or kitchen. However, many users face the problem: after the first filling, the device begins to spit, give out too little soap or stop working altogether.

In this article, we will break down the step-by-step refueling algorithm for all popular Xiaomi dispenser models (including the Mijia Smart Liquid Dispenser, Viomi V3 and others), explain which soap is best and which can break the mechanism, and give 7 practical tips to make the dispenser last longer. If you just bought the device or it has long been dusting due to “whisky” – this guide is for you.

What Xiaomi dispensers support liquid soap?

Not all automatic dispensers from Xiaomi are universal. Some models are initially designed only for foaming agents (for example, for hand washing), others for liquid gels (for showers or dishes).

• 🔹 Mijia Smart Liquid Dispenser - universal model, works with liquid soap, shower gel and shampoo (volume of tank 300 ml).
• 🔹 Viomi V3 Smart Soap Dispenser - supports liquids and foam (there is a switch mode.
• 🔹 Xiaomi Youpin Fresh Foam Dispenser - only for foam! pouring liquid soap will lead to breakage.
• 🔹 Deerma DEM-F600 (from a subsidiary brand) – compatible with liquid gels, but requires dilution with water (1:1).

If your model is not listed, check the instructions or labels on the case. Usually, the manufacturer indicates the type of compatible products next to the filling hole, filling incompatible soap is the most common cause of breakdowns (about 60% of calls to service centers).

What liquid soap can be poured into the dispenser?

Not all detergents are equally useful for automatic dispensers.

1. Consistency: Optimal viscosity, like liquid Dove or Palmolive soaps, and too thick gels (like Sanex) clog the pump.
2. pH level: neutral (5.5-7) Acid or alkaline agents corrode plastic and rubber seals.
3. Composition: without abrasive particles (scrabs) and large air bubbles (they interfere with the work of sensors).

Critically, never use homemade soap solutions (such as lump soaps) contain undissolved particles that clog the valves in 1-2 weeks of use, and avoid triclosan products, which are aggressive to plastic.

⚠️ Warning: If you poured a perfume-based essential oil (such as lavender or citrus) into the Xiaomi dispenser, wash the tank after 3-4 days. The oils oxidize and form a sticky plaque on the walls.

Step-by-step instructions: how to fill the dispenser with liquid soap

The refueling process seems simple, but 80 percent of the dispensing problems are due to the failure of this particular stage.

Turn off the power supply (if it is connected to the socket)

Remove the top cover (turn counterclockwise or press the latch)

Remove the soap tank (in some models it is fixed by a magnet)

Wash the tank with warm water if you are filling the dispenser not for the first time-->

1. Soap dilution (if necessary) For thick gels: mix the product with distilled water in a ratio of 1: 1. Use a measuring cup (comes with some models). Viomi V3 has a separate mode for diluted products - activate it in the Mi Home application.
2. Tilt the tank at a 45° angle and slowly pour soap on the wall to avoid bubbles. Maximum level - 1-2 mm below the MAX mark (overflow will lead to leaks!).
3. Tightly twist the tank lid (before clicking). Make sure the seal ring is not skewed. In magnetically mounted models (such as Mijia), make sure the tank is in place without gaps.
4. Connect the dispenser to power and test the soap supply. The first 2-3 servings can be unstable - this is normal (air exits the system).

If the dispenser gives out soap in jerks or interruptions, it means there's still air in the system.

1. Remove the tank.


2. Press the soap supply button 3-5 times (without the tank!).




3. Set the tank back and repeat the test.

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If the Viomi V3 metering unit produces an E2 error after refueling, reset: hold the power button for 10 seconds until the blue light flashes. Then repeat the refill.

Common Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes that shorten the life of the dispenser.-5 problems and solutions:

• 🚫 Soap overflow → Leaks and corrosive contacts. Always leave 5-10mm of free space in the tank.
• 🚫 Use of the wrong soap → You can check the viscosity, if it doesn't leak out of the bottle when it's rolled over in 2 seconds, it's too thick.
• 🚫 Refilling "by eye" without dilution → Even if the soap seems liquid, the viscosity can be high.
• 🚫 Ignoring the flushing of the tank → The residues of the old soap are mixed with the new soap to form clots.
• 🚫 Storage of the dispenser in a wet room → Condensate oxidizes contacts. Install the device 1-1.5 m from the shower.

Pay special attention to the sealing ring on the tank cover. If it is deformed or lost elasticity, replace it (parts are sold on AliExpress or in Xiaomi service centers). The cost of the new ring is about 100-150 rubles, but it prevents leaks that can disable the control board (repair will cost 1500-2000 rubles).

⚠️ Warning: If after filling the dispenser starts to emit a grin or squeak, turn it off immediately! This is a sign of a pump lock. Disassemble the device and check if a foreign object (for example, a label from a bottle) has entered the mechanism).

How to prolong the life of the dispenser: 7 tips from the masters

The average life of Xiaomi dispensers is 2-3 years, but with proper care, it can last 2 times longer.

1. Use distilled water to dilute. Tap water contains chlorine and salts, which form a plaque on the pump.
2. Change the soap every 2 weeks. Even if the tank is not empty, the liquid "ages" and thickens.
3. Store the spare soap in a sealed container. An open bottle in the bathroom absorbs moisture, and the soap becomes thicker.
4. Wipe the motion sensor (if any) with a dry wipe once a month. Dust and splashes interfere with its operation.
5. Don't put the dispenser in direct sunlight. UV radiation makes the plastic brittle.
6. Update the firmware through the Mi Home app. In new versions, dosage bugs are fixed (for example, in Viomi V3, after the 2023 update, a saving mode was added).
7. Use a cover (if included) that protects against dust and splashes.

If you fill the dispenser with a dishware (for example, Fairy), note that it is aggressive for rubber parts. After each use, wash the tank with vinegar with water (1 tbsp. spoon per 1 liter of water) - this neutralizes the alkali.

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The most common reason for Xiaomi dispensers failure is the use of thick gels without dilution. Even if the device works, the pump wears out 3-5 times faster.

What if the dispenser does not give out soap?

If after refueling the dispenser does not respond to the press of a button or gestures, perform the diagnosis by the steps:

If none of these things worked, try resetting to factory settings.

1. Disconnect the dispenser from the network.
2. Press the soap supply button and hold for 15 seconds.
3. Connect the power without releasing the button, another 5 seconds.
4. Release the button and the dispenser will restart.

After the reset, you may need to reconnect to the Mi Home app. If the problem persists, contact the service center - the motor or control board may have failed.

Alternative Refueling Methods (for Experienced Users)

If standard refilling is not suitable (for example, you use concentrated soap or want to save money), you can apply advanced methods:

• 🧪 Glycerin dilution: for thick gels, add 10% pharmacy glycerol (sold in any pharmacy) to reduce the viscosity without losing detergent properties.
• 💧 Use of dispenser packages: some users fill the dispenser through liquid soap inlay packages (such as Dove) by carefully cutting the corner of the package and inserting it into the tank.
• 🔄 Two-phase refueling: first pour water (on the water) 1/3 A canister, then soap, which prevents bubbles from forming.

Warning: these methods require caution, such as glycerol can crystallize at low temperatures (if the dispenser is in an unheated bath).

FAQ: Answers to Frequent Questions