Xiaomi soap replacement: instructions for all models (2026)

Xiaomi's automatic soap dispensers are not just a convenience gadget, but a real godsend for those who appreciate hygiene and modern technology. However, even the smartest device requires periodic maintenance. Soap replacement is a seemingly simple procedure, but there are nuances here: from choosing the right tool to correctly refueling the tank to avoid leaks or sensor breakdowns. In this article, we will take everything from preparation to eliminating typical errors.

Many users face problems: the dispenser stops dispensing soap, the error indicator flashes or the liquid leaks spontaneously, most often due to improperly selected soap or a violation of the refueling process. We tested several models (Mijia Automatic Soap Dispenser, Viomi V1) and collected proven recommendations that will save your time and nerves.

If you're first to encounter a Xiaomi dispenser, don't worry: most devices are intuitively designed, but there are key points that the manufacturer doesn't always specify in the instructions, such as using thick gels or abrasive particle soaps can knock out the pump in 2-3 months, and this and other pitfalls are more on.

What soap is suitable for Xiaomi dispensers: selection criteria

Not every liquid soap is compatible with automatic dispensers. The basic parameter is viscosity: too thick a liquid clogs the tubes and overloads the motor, optimal consistency is like water or a light shower gel.

The manufacturer recommends using original Xiaomi cartridges, but they are more expensive than their counterparts.

• 🧼 Liquid soap marked "for dispensers" (for example, Dove, Palmolive in pump bottles).
• 🧴 Hand gel with neutral pH (e.g. Sanex, Nivea Soft).
• 🚿 Means without abrasive particles, alcohol (>10%) and oil-based perfumes.

⚠️ Warning: Soaps with antibacterial additives (such as triclosan) can leave sludge on the sensor, causing false positives. If the dispenser starts phantoming soap, wash the tank with clean water.

For models with UV-sterilization (e.g., Viomi) V2 Pro) avoid products with optical bleach - they reduce the effectiveness of the ultraviolet lamp.

Preparing the dispenser for soap replacement: Step-by-step

Before refueling, the device must be properly prepared, and it will take no more than 5 minutes, but it will save you from leaks and breakdowns.

Sequence of action:

1. Disconnect the dispenser from the socket (if the model is powered from the network).
2. Remove the top cover – it is usually fixed by magnets or latches (click on the side ledges).
3. Remove the soap container. In Mijia models, it's transparent; in Viomi, it's often white with silicone pad.
4. Wash the tank with warm water (no detergents!) if there are remnants of old soap inside.

⚠️ Warning: Do not use sponges with hard pile - they scratch the inner surface of the tank, which leads to the accumulation of bacteria.

If the dispenser has been out of use for a long time, check the silicone seals on the tank lid. Over time, they lose elasticity, which is the main cause of leaks. If necessary, replace the seal (article for Mijia: MDZ-21-AA).

Shut down the power.

Remove the top cover

Remove the soap container

Wash the tank with water (if necessary)

Check the seals.-->

How to fill the dispenser with soap: step-by-step instructions

Now, the main thing is refueling, and the process is a little bit different depending on the model, but the overall pattern is the same.

Universal instruction:

1. Fill the tank with soap to 80% of the volume (not to the edges!). For Viomi models with a fluid level sensor, leave 1-1.5 cm to the top.
2. Install the container back into the body, combining the guide grooves.
3. Close the lid before you click. Make sure it sits flat -- skewed leads to E2 error (smooth closing).
4. Connect the dispenser to power. Wait for initialization (blue light).
5. Test the soap output: bring your hand to the sensor at a distance of 5-8 cm.

If the soap is not given out or is jerking, check:

• 🔋 Battery level (for wireless models).
• 💧 System fervour – press the pump several times manually (if there is a mechanical button).
• 🔧 Correct installation of the supply tube (in models with an external tank).

⚠️ Attention: After the first refill of the new dispenser, it may be necessary to "pump" the system. 2-3 press the manual issue button (if any) or wait for automatic calibration (takes up to the next one). 1 minute).

Common Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when replacing soaps, and here are the most common ways to fix them:

Pay special attention to the error E3 — It indicates a problem with the pump motor. 90% In some cases, it's the result of using thick soap or getting foreign objects into the tank. Do not try to disassemble the pump yourself, this will lead to a loss of warranty: mi.com/service).

💡

If the dispenser starts to "sneeze" (dispense soap intermittently), add 1-2 teaspoons of distilled water to the tank and mix it. This will temporarily restore the pump to normal operation.

How to care for a dispenser so that it lasts longer

The life of the automatic dispenser Xiaomi - 3-5 years, if properly operated. To avoid breakdowns, follow the simple rules:

Monthly maintenance:

• 🧽 Wash the tank with warm water (without detergents!) 1 time per month.
• 🔍 Check the condition of seals and nozzles.
• 🔋 For battery-powered models, replace the batteries every 6 months (even if you still have a charge).

What can't be done:

• ❌ Fill the dispenser with means with abrasives (scrabs, peels).
• ❌ Use soap with large particles (e.g. exfoliants).
• ❌ Putting the device under direct sunlight - this leads to clouding of the plastic.

For models with UV-lamp (e.g. Viomi) V3) Rub the inside of the tank every 3 months with a napkin dipped in a weak acetic solution (1:10) to remove lime plaque and prolong the life of the lamp.

💡

Using Xiaomi's original cartridges increases the life of the dispenser by 30-40%, but their high price is not always justified.The alternative is Dove or Palmolive liquid soap in pump bottles (they have optimal viscosity).

Analysis of popular models: features of soap replacement

Xiaomi dispensers design varies depending on the model. Let's look at the nuances for the most popular devices.

Mijia Automatic Soap Dispenser (MDZ-21-AA):

Viomi V2 Pro (VIOMI.SOAP.002):

Xiaomi Youpin Fresh Soap Dispenser:

For Wi-Fi models (such as the Viomi V3), you may need to reconnect to the Mi Home app after you change the soap.

1. Open the app and select your dispenser.
2. Click Settings → Reboot the device.
3. Wait for the synchronization (up to 2 minutes).

Frequent Questions and Answers (FAQ)