Xiaomi soap dispenser: how to properly refill, clean and avoid breakdowns

Xiaomi's automatic soap dispensers are not just a bathroom accessory, but a full-fledged gadget from the Mi Home ecosystem. Models like the MiJia Smart Soap Dispenser or Xiaomi Mijia Automatic Soap Dispenser 2 are equipped with motion sensors, wireless charging and even integration with voice assistants. But even such a smart device has a routine task of filling up with liquid. And here users are faced with questions: what soap solution is suitable, how to disassemble the body without damage, why the dispenser stopped spraying soap after refueling.

In this article, we will discuss all the steps of refueling, from choosing a liquid to eliminating typical errors, you will learn how to refuel the original dispensers Xiaomi clones, how to mix concentrates correctly, and why using a regular liquid soap can disable the pump for the first time. 2-3 We also tested it. 5 popular liquids for dispensers and compiled a table of compatibility with Xiaomi models.

If your dispenser starts to spit, make strange sounds, or stop responding to movement, don't rush to bring it to the service. In 80% of cases, the problem lies in improper refueling or contamination of the mechanism. Next, you will find step-by-step instructions with photos, video examples and checklists for self-repair.

1.What liquid can be poured into the Xiaomi dispenser

First rule: not all liquid soap is suitable for automatic dispensers.The original Xiaomi models (e.g. MiJia Smart Soap Dispenser) S1) designed for liquids with a viscosity of 100-300 mPa·s and pH in the range of 5.5-8.5. Exceeding these values leads to thickening of the solution inside the tubes, overheating of the pump and failure of the device.

The manufacturer recommends using special concentrates for automatic dispensers or diluted baby soap without fragrances, but in practice, users successfully refuel the devices with other formulations, the main thing is to observe the proportions.

Here’s what you can and can’t put in the dispenser Xiaomi:

• ✅ Recommended: original Xiaomi MiJia Soap Refill concentrate (diluted with water 1:3), Johnson's Baby baby liquid soap (diluted 1:2), antiseptic gels with alcohol content up to 60%.
• ⚠️ With caution: Dove or Nivea shower gel (requires dilution 1:4), shampoo for sensitive skin (may foam).
• ❌ Prohibited: ordinary liquid soap with abrasives (for example, Fairy), thick cream soaps, large-particle products (scrabs), undiluted essential oils.

We tested 5 popular liquids on the Xiaomi Mijia Automatic Soap Dispenser 2 dispenser.

If you use a non-original liquid, be sure to check its viscosity. You just need to pour a little solution into a glass and watch it drain down the walls: if the trace remains longer than 3-4 seconds, the liquid is too thick.

2. Step-by-step instruction: how to fill a soap dispenser

Before refueling, disconnect the dispenser from power (if it is powered by the mains) or make sure that the wireless charging is turned off.This will prevent the motion sensor from accidentally triggering during the procedure.

For the refueling you will need:

• ✔️ Suitable liquid (see section above)
• ✔️ Distilled or boiled water (if dilution is required)
• ✔️ Funnel or syringe without needle (for careful pouring)
• ✔️ Napkins or paper towels

Now let's get to refueling.The instruction is suitable for most Xiaomi models, including the MiJia Smart Soap Dispenser. S1, Mijia Automatic Soap Dispenser 2 and its clones.

Disconnect the dispenser from power|

Prepare the liquid (dilute if necessary)|

Place the dispenser on a flat surface|

Put a napkin under the nose of the sprayer|-->

Step 1 Removing the top cover

On most Xiaomi dispensers, the lid is fixed with magnets or latches. Carefully pull it upwards while holding the body with the other hand. If the lid does not lend itself, try turning it slightly counterclockwise (some models have a hidden lock).

Step 2: Removal of the reservoir

Inside, you'll see a removable liquid tank. On the original dispensers, it's transparent, with minimum and maximum levels. Take the tank out by pulling it up. If the tank is boiling, don't use force, wet the edge with warm water and try again in 5 minutes.

Step 3: Liquid pouring

Fill the tank with liquid to the mark. MAX (It's usually 250 to 300 ml. Use a funnel or syringe to avoid the spills. If you're diluting the concentrate, pour the water first, then add the soap base and stir with a stick.

Step 4: Installation of the tank and cover

Carefully insert the tank back, making sure it sat down before clicking. Close the lid with the tags (if any) on some models, after refueling, press the reset button (usually hidden under a rubber plug).

Step 5: Verification of the work

Connect the dispenser to power and test the spraying. If the fluid is not coming in:

• 🔹 Check if the tank is properly installed (sometimes it moves when the lid is closed).
• 🔹 Make sure the liquid is not too thick (see compatibility table).
• 🔹 Try manually pressing the pump (some models have a mechanical button on the side).

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If the dispenser starts to spit with foam, add 10-15 ml of distilled water to the tank and shake it. This will help reduce the concentration of foaming substances.

3.How to disassemble Xiaomi dispenser for cleaning or repair

If the dispenser stopped working after refueling, the tubes or the pump may have clogged, in which case a partial disassembly will be required, and we warn you that self-repair can lead to a loss of warranty if the device is still in warranty service.

You will need to disassemble:

• 🔧 Plastic blade (or mediator)
• 🔧 Screwdriver cross (PH0 or PH1)
• 🔧 Tweezers
• 🔧 Alcohol napkins

Disassembly instructions:

1. Remove the top cover (as in refueling).
2. Remove the liquid tank.
3. Turn over the dispenser and unscrew the 4 screws on the bottom panel (they can be hidden under the rubber legs).
4. Carefully shovel the bottom cover, starting at the corner. Be careful, there may be wires inside that go to the motion sensor.
5. When you take the lid off, you'll see the control board, the pump and the tubes.

If your goal is cleaning, focus on the following:

• 🧼 Liquid supply tubes – wash them with warm water with a syringe.
• 🔄 Pump - wipe it with cotton soaked in alcohol. Don't use abrasives!
• 👁️ Motion sensor – wipe it with a dry wipe (dust can block the operation).

Once cleaned, assemble the dispenser in reverse order. If the problem persists, the pump or control board may have malfunctioned, in which case it is better to contact the Xiaomi service center.

4.Typical gas station errors and how to avoid them

Even experienced users sometimes make mistakes that lead to a breakdown of the dispenser, and here are the most common ones and ways to prevent them:

⚠️ Attention: If you pour a thick liquid (such as an undiluted shower gel) into a Xiaomi dispenser, do not immediately try to flush it with water.This can lead to lumps inside the tubes. First remove the tank and clean it manually, then rinse the system with distilled water.

Mistake 1: Liquid overflow above the label MAX

What happens: The liquid gets into the vents, which leads to corrosion of the contacts or short circuit (on models with electronics at the top).

How to avoid: Always pour the liquid to the mark MAX. If there is no mark, leave 5-10 mm of free space.

Mistake 2: Using tap water

What happens: Mineral deposits from hard water clog the pump and tubes, reducing the service life of the dispenser by 2-3 times.

How to avoid: Use only distilled or boiled water to dilute concentrates.

Error 3: Filling with cold liquid

What happens is that the viscosity of the liquid increases at low temperatures, which puts additional stress on the pump, and as a result, it can overheat and fail.

How to avoid: If the dispenser is in a cool room (for example, in a bath with tiles), before refueling, hold the liquid for 10-15 minutes at room temperature.

Mistake 4: Mixing different liquids

What happens: A chemical reaction between the components can lead to precipitation or increased foaming.

How to avoid: If you decide to change the type of liquid (for example, from soap to antiseptic), completely rinse the tank and tubes with distilled water before refueling.

Mistake 5: Ignoring low fluid signals

What happens: The pump is idle, which causes it to wear out. On models with an indicator (Xiaomi Mijia Automatic Soap Dispenser 2), the red LED lights up, but many users do not pay attention to it.

How to avoid: Fill the dispenser when the fluid level drops to the mark MIN, or when a warning signal appears in the Mi Home app.

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If the dispenser starts to make a buzzing sound, but the liquid does not come in, this is a sure sign that the pump is clogged or the liquid is too thick.

5.How to wash Xiaomi dispenser from the residue of soap

Washing is required in three cases:

1. When changing the type of liquid (for example, from soap to antiseptic).
2. If the dispenser started to spray the liquid poorly.
3. After a long period of inactivity (more than 2 weeks without use).

Step-by-step flushing:

1. Remove the tank and pour out the remaining liquid.
2. Fill the tank with warm distilled water (temperature not higher than 40)°C).
3. Set the tank back and turn on the dispenser.
4. Press the spray button (or activate the motion sensor) 10-15 times to allow water to pass through the entire system.
5. Repeat the procedure 2-3 times, then wipe the nozzle with a napkin.
6. Leave the dispenser with the lid open for 1-2 hours to dry.

If a conventional flushing didn't work, use vinegar solution (1 part vinegar to 3 parts water), put it in a tank, wait 10 minutes, then rinse the system with clean water, which helps remove lime plaque and soap deposits.

For models with severe contamination (for example, after using thick soap), it may be necessary to disassemble and clean the pump manually (see Section 3).

6.Compatibility of Xiaomi dispensers with liquids of other brands

Many users want to fill Xiaomi dispensers with liquids from other manufacturers, such as Sanitelle antiseptics or Dove shower gels. But not all formulations are compatible with the Xiaomi mechanism. We tested several popular brands and made a compatibility table.

Important: Even if the liquid is viscosity-appropriate, pay attention to the pH level. < 5.5. > 8.5) may damage the seals and tubes of the dispenser.

If you want to use a liquid that is not in the table, do the test:

1. Pour a small amount of liquid into the glass.
2. Add water in a 1:3 ratio and mix.
3. Leave for 10 minutes - if there is sediment or the liquid has become gel-like, it does not fit.

For touch-controlled models (such as the Xiaomi Mijia Smart Soap Dispenser Pro), it is especially important to use liquids without abrasive particles – they can damage the infrared sensor.

7.How to care for Xiaomi dispenser so it lasts longer

The average life of Xiaomi dispensers is 2-3 years if used correctly, but many users will experience breakdowns within a few months, most often due to improper care.

• 🔋 Charging: If the dispenser is battery-operated, do not allow full discharge. Recharge it when the indicator shows 20-30% charge.
• 💧 Clean: Wash the system with distilled water every 2-3 refueling times (or once a month with heavy use).
• 🌡️ Temperature: Do not place the dispenser near the heater or in direct sunlight. The optimal operating temperature is 10-35°C.
• 🔄 Updates: Check firmware updates in the Mi Home app regularly. Newer versions often fix spray bugs.
• 🛡️ Storage: If the dispenser is not used for more than a week, drain the liquid and rinse the system with water.

For models with wireless charging (for example, Xiaomi Mijia Automatic Soap Dispenser 2), it is important to use only original charging stations. Cheap analogues can damage the battery due to unstable voltage.

⚠️ Note: If you use a dispenser in a public place (such as an office or cafe), fill it with liquids with antibacterial additives.

If the dispenser started to work worse (weak pressure, delays in spraying), try calibrating the motion sensor.

1. Open the Mi Home app.
2. Select your dispenser in the list of devices.
3. Go to Settings. → Sensor calibration.
4. Follow the instructions on the screen (usually hold your hand to the dispenser at a distance of 10-15 cm and hold for 5 seconds).

8.Frequent questions about Xiaomi soap dispensers