How to pour water into the robot vacuum cleaner Xiaomi Vacuum Mop Essential: a step-by-step guide with photos and tips

Xiaomi Vacuum Mop Essential (model) STYJ02YM) It combines dry and wet cleaning, but many users have difficulty using the floorwashing function for the first time, and the main problem is improperly refilling the water tank, which leads to leaks, insufficient moisture of the rag, or even a broken pump. In this article, we will analyze the step-by-step algorithm for pouring water, the nuances of choosing a liquid, as well as typical errors that reduce the life of the device.

Unlike the older models of the series (for example, Xiaomi Vacuum Mop 2 Pro), the Essential version has a simplified water supply system: there is no electronic flow control, so it is important to observe the volume and type of liquid. The manufacturer recommends using only distilled or boiled water, but in practice many people add detergents — we tested both options and identified risks.

This article will be useful for both beginners and experienced owners: here you will find hidden settings of the application for adjusting the intensity of washing, tips for caring for the tank and answers to frequent questions (for example, why the robot does not spray water or leaves divorces).

Preparing a robot vacuum cleaner for pouring water

Before pouring water, you need to follow 3 mandatory steps:

• ✅ Disconnect the vacuum cleaner from the charging station - this will prevent accidental switching on during refueling.The contacts of the tank and electronics should not interact with the liquid.
• ✅ Remove the water tank: press the lock button (located on the back wall of the case) and pull the tank up. STYJ02YM The tank is attached to magnets, so do not make excessive efforts.
• ✅ Check the filter and nozzle clean. A clogged sprayer is the main reason why water doesn't go to the cloth. Use a needle or toothpick to clean the holes.

Pay special attention to the condition of the sealing gum on the tank lid. If it is deformed or covered with plaque, replace it, this will prevent leaks. The manufacturer recommends washing the gum with warm water without detergents once a month.

⚠️ Warning: Never put water in a vacuum cleaner when it is charging. The tank's contacts are located next to the electronic components, and the liquid can cause a short circuit. In Xiaomi service centers, 30% of warranty repairs are due to this error.

What water can be poured in Xiaomi Vacuum Mop Essential

The manufacturer's instructions indicate that it is permissible to use only distilled or boiled water, but in practice, users experiment with different liquids, and we tested 4 options and made a table of their effect on the robot:

Critically, if you use detergent, it should not exceed 3-5%, and exceeding this threshold leads to foam that clogs the tubes and disables the pump, which is not considered warranty in service centers.

For those who want to save money but not risk their machines, the following recipe is: 1 liter of distilled water + 1 teaspoon of vinegar (9%), which removes lime plaque and disinfects the cloth without damaging the machinery.

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If you use tap water, you can either filter it or let it stand for 12 hours, which will reduce the amount of salts that are deposited on the inside of the vacuum cleaner.

Step-by-step: how to properly pour water

Follow this algorithm to avoid leaks and ensure uniform spraying:

1. Remove the tank from the vacuum cleaner body by pressing the lock button. Make sure there is no liquid residue from the previous cleaning in the tank.
2. Open the tank lid counterclockwise. There's a MAX tag on the inside of the lid (200 ml), which is the maximum amount of water for a single cleaning.
3. Pour the water slowly to avoid air bubbles, which can block the flow of fluid to the pump.
4. Close the lid before you click. Make sure the sealing gum is flat, without any distortion.
5. Place the tank back into the vacuum cleaner, aligning the guide grooves, and the click of the magnetic hold should sound.
6. Check the leakproofness: flip the vacuum cleaner (turned off!) and make sure the water doesn't leak.

After refueling, turn on the vacuum cleaner and run the test wash mode through the Mi Home app.

1. Open the app and select your vacuum cleaner.
2. Go to Settings → Cleaning Modes → Wet cleaning.
3. Select the intensity level (we recommend starting with the medium).
4. Press the Test – the robot will spray water on the cloth for 5 seconds.

Common Mistakes and How to Avoid Them

Even the most experienced users make mistakes when refilling water. TOP-5 problems and solutions:

• 🚫 Water overflow above the mark MAX → The liquid will enter the electronic block, which will lead to a short circuit.
• 🚫 Using cold water → At low temperatures, the pump is loaded, which reduces its lifespan. Optimal temperature: 20-30°C.
• 🚫 Closing the lid of the skewed tank → Make sure the rubber band is right around the perimeter.
• 🚫 Adding flavors or bleachers → - corrodes plastic and rubber parts. - Use only specialized products.
• 🚫 Storage of water in the tank for more than 24 hours → Bacterial reproduction and mold formation. Always drain the residues after cleaning.

One of the most common complaints of owners is that the robot doesn't spray water during cleaning, and the reasons may be:

• 🔧 The sprayer nozzle clogged (clean with a needle).
• 🔧 The pump is faulty (check if the sound of its operation is heard when the washing mode is turned on).
• 🔧 The air is in the tank (remove the tank, shake it and install it back).
• 🔧 Mi Home app does not activate wet cleaning mode.

⚠️ Warning: If after cleaning the nozzle and checking the settings, the robot still doesn't spray water, don't try to disassemble the pump yourself. STYJ02YM It's integrated with the control board, and unskilled repairs will cause a complete breakdown. 02-0307 (is displayed in the application during diagnosis).

Wet cleaning settings in the Mi Home app

Many users don't know that the intensity of floor washing can be regulated through the app.

1. Open Mi Home and select your vacuum cleaner.
2. Go to Settings → Cleaning Modes → Wet cleaning.
3. Choose from three levels: Low for laminate and parquet (minimum moisture); Medium for tile and linoleum; High for highly contaminated surfaces only (increases water consumption).

Automatic addition of water

You can also set up wash avoidance zones in the app, which is useful if you have carpets or areas of floor that you can't wet.

1. In the main menu of the vacuum cleaner, select the Map.
2. Click on the Zone icon (in the upper right corner).
3. Select the area to be excluded and select the option to disable washing.

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Regularly update the vacuum cleaner firmware through Mi Home – new versions improve the water distribution algorithm and add cleaning modes for different types of coatings.

Care for water tank and cloth: extending the service life

To avoid breakages and unpleasant smell, follow these recommendations:

• 🧼 After each cleaning, drain the remaining water from the tank and rinse it with warm water. Don't use hard brushes, they scratch the plastic.
• 🧼 Once a week, disinfect the tank with a solution of vinegar (1: 1 with water) or special tablets for robot vacuum cleaners.
• 🧼 Wash the cloth manually at a temperature not higher than 40°C. Do not use bleach – it destroys microfiber.
• 🧼 Keep the tank in a dry place, separate from the vacuum cleaner.

The rag has a lifespan of about 3-6 months (depending on the intensity of use), signs that it is time to replace it:

• 🚩 There are holes or puffs on the surface.
• 🚩 After washing, there is a persistent smell.
• 🚩 The rag does not absorb water (pools form on the surface).

The original rags for Xiaomi Vacuum Mop Essential have the article ZMJ-012-XM. The alternative is microfiber wipes 3-5 mm thick, but they need to be trimmed in size (18 × 24 cm).

Frequent questions and answers