Assembly of the dispenser for liquid soap Xiaomi: instructions with photos and life hacks

Why you need a Xiaomi Dispenser and what is included

Xiaomi’s automatic liquid soap dispensers (e.g., Mijia Smart Soap Dispenser or Viomi models) V3*) They've become a popular solution for smart bathrooms and kitchens, and they not only save cleaning products, they also minimize contact with surfaces, especially in high-hygienic environments. Unlike mechanical analogues, smart dispensers recognize hand movement at a distance of 5-15 cm and give a fixed dose of soap (usually 0.8-1.2 ml).

The standard delivery package includes:

• 📦 Main body with tank (volume 300-500 ml depending on the model)
• 🔌 Power adapter (5V/1A or USB Type-C)
• 🔧 Strong bracket with bilateral tape or screws
• 📄 Brief instruction in Chinese/English (Russian version is rare)
• 🔄 Removable pump with silicone tube (in some models - a replaceable cartridge)

Important: models with Mi Home or Home Assistant support (e.g. Viomi) V3 Pros require pre-binding to the application to adjust the sensitivity of the sensor and timers. Without a smartphone, they can only be used in base mode.

Preparation for assembly: tools and conditions

Before you start building, make sure you have everything you need. Most Xiaomi models don’t require special tools, but you should consider some things in advance:

• 🔨 Screwdriver (if fastened to screws) or alcohol wipes for degreasing the surface before sticking
• 📏 Level (for even installation of wall models)
• 🔌 Socket within a radius of 1.5 m from the installation site (the length of the cable is limited)
• 💧 Distilled water (for the first test, if there is no soap on hand)

Critical conditions for correct work:

• 🌡️ Temperature in the room: 5-40°C (at lower temperatures, the liquid may thicken)
• 💦 Humidity: up to 85% (in steam or shower rooms with constant humidity) >90% of sensors can be falsely triggered)
• 🔋 Network voltage: 100–240V (Adapter supports a wide range, but jumps >260V may cause the charge to fail)

⚠️ Warning: Do not install the dispenser over open-fire sources (e.g., over a gas stove). Steam from boiling water can cause false alarms of the infrared motion sensor.

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If you use a thick soap or gel, dilute it with water in a 1:1 ratio before first filling, which will reduce the load on the pump and prolong its life.

Step-by-step assembly of the dispenser: from unpacking to test run

Let’s take a look at the Mijia Smart Soap Dispenser (and most Viomi or Yeelight clones), and it takes no more than 20 minutes.

Installation of the tank and pump

Remove the top cover of the case by pulling it upwards (some models have a locker, press it with a screwdriver).

• 🔋 Battery compartment (if the model is powered from AA/AAA)
• 🚰 Removable silicone tube tank
• 🔄 Reverse valve pump (do not disassemble it - this voids the warranty!)

Connect the tube to the pump before you click. Make sure it's not twisted or clamped. Critical error: if the tube touches the bottom of the tank, the pump will suck in air instead of liquid.

2. Fastening to a wall or countertop

Use the template from the kit to mark holes under the dowels (if you attach them to screws).

1. Clean the surface with alcohol.
2. Remove the protective film from the bilateral tape on the bracket.
3. Press the dispenser against the wall for 30 seconds.

⚠️ Attention: On glossy surfaces (such as tile tiles), scotch can fall off after 1-2 months.

3. Power connection and first filling

Connect the adapter to the socket, and the front panel will light up a blue indicator (ready to work) or a red indicator (an error, such as an empty tank). MAX (Usually 300-400 ml. Avoid foaming agents - they can clog the tube.

For the test, bring your hand to the sensor at a distance of 10-15 cm. ~1 ml If no liquid is supplied:

• 🔄 Check if the tube is clamped.
• 🔋 Make sure the adapter is connected correctly (sometimes you need to restart – turn off power for 10 seconds).
• 💧 Try replacing soap with water – it may be too thick.

Set up smart functions via Mi Home (for supported models)

Mi Home-enabled models (e.g. Viomi) V3 Pro or Mijia Smart Soap Dispenser 2:

• 📱 Adjust the portion size (0.5-1.5 ml).
• ⏱️ Set timers for automatic disinfection.
• 🔔 Receive notifications about low fluid levels.

To bind the device:

1. Download the Mi Home app (Android/iOS).
2. Sign up or sign in to your Xiaomi account.
3. Click Add Add the device → Household care → Soap dispenser.
4. Hold the button on the dispenser body for 5 seconds until the indicator blinks.
5. Connect to a 2.4 GHz Wi-Fi network (5 GHz is not supported!).

After connecting in the settings, the devices will be available:

Common mistakes and their solution

Even with proper assembly, the dispenser may not work properly, and here are the typical problems and ways to fix them:

1. Dispenser doesn't respond to arm

Causes and solutions:

• 🔦 Dirty sensor: wipe the sensor with a cotton swab soaked in alcohol.
• ☀️ Direct sunlight: Move the device or close with a curtain.
• 🔋 Weak Wi-Fi signal (for smart models): check network speed (>1 Mbps).

2.The soap does not come in or flows in a thin stream.

Probable reasons:

• 🚰 Blockage of the tube: wash the system with water with vinegar (proportion 1: 1).
• 🔄 Wear of the pump: if the device >2 years, replace the pump (article for Mijia — MDZ-06-DC).
• 🧴 Dense soap: Dilute with distilled water or use special liquids for automatic dispensers.

3.The red indicator is constantly on.

Red light indicates a critical error, often associated with overheating of the board or short circuit.

• 🔌 Integrity of the power cable (are there no bare wires).
• 💧 Liquid hitting the board (if the tank leaked).
• 🌡️ Body temperature (norm) <40°C; if hot, let it cool down. 30 minute).

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If after washing the tube and resetting the settings the problem persists, contact the service center Xiaomi.

Maintenance and care: how to extend the life of the dispenser

With proper care, Xiaomi dispenser will last 3-5 years.

• 🧼 Clean the tank: wash the container with warm water once every 2 weeks. Use vinegar solution (1 tbsp per 200 ml of water) for disinfection).
• 🔧 Check the tube: once a month, inspect the silicone tube for cracks. If you find it, replace it (parts sold on AliExpress).
• 🔋 Power supply: If you use batteries, replace them every 3-4 months (even if the dispenser is working.
• 🌿 Soap choice: avoid products with abrasive particles (scrabs) or high oil content (can settle on the walls of the tube).

For models with UV-lamp (e.g. Viomi) V3 Pro):

• 💡 Turn on the disinfection function no more than 1 time a day (overuse reduces the life of the lamp).
• 👁️ Don’t look at a lamp working – UV radiation is bad for the eyes.

⚠️ Warning: Do not use aggressive detergents (such as Domestos or Whiteness) to clean, which destroy silicone parts and can damage the plastic of the case.

Xiaomi models comparison: which dispenser to choose in 2026

Xiaomi and its sub-brands have several dispensers, and below is a comparison table for 2026:

For most users, Viomi is the best choice. V3 Pro — it combines large volume, flexible settings and support for Mi Home. If you want a budget option without bells and whistles, Yeelight will suit with batteries.

FAQ: Frequent questions about assembly and operation