How does the robot vacuum cleaner Xiaomi with wet cleaning: a full analysis of the technology

Xiaomi’s wet-cleaning robot vacuum cleaners are no longer a curiosity, but their internal design and working principles remain a mystery to many users. If you think that such a gadget just splashes water and wipes the floor with a cloth, you are very mistaken. Modern models such as Xiaomi Mi Robot Vacuum-Mop 2 Pro or DreameBot D9, They are equipped with sophisticated humidity control systems, pollution sensors and algorithms that adapt to the type of coating. In this article, we will not only explain how wet cleaning physically works, but also reveal the nuances of the settings that the manufacturer often does not say.

It's important to understand that wet cleaning in Xiaomi robots is not just a wet mode, but an ecosystem of sensors, pumps and software interactions, for example, why some models automatically reduce the water supply on carpets while others require manual switching, or how a robot determines that it's time to change a napkin? Answering these questions will not only help to use the device more efficiently, but also extend its life.

The device of the wet cleaning system: what is inside the robot

At the heart of wet cleaning is a water pump module that feeds liquid from the tank to the detergent unit. V3 Mi Robot Mop 2 Lite is a module that consists of:

• 💧 Water tank (volume from 200 to 300 ml) with an electronic valve regulating the supply.
• 🔄 Pump with adjustable power - responsible for the intensity of humidification (in advanced models is configured through the application).
• 🧽 A washing unit with a microfibre wipe that presses against the floor with force ~1.5-2 kg.
• 📡 Humidity sensors (found in flagships, such as DreameBot) Z10 Pro – Analyze the type of coverage.

The key difference between the low-cost and premium models is the way water is controlled. In low-cost robots (such as Mi Robot Vacuum-Mop Essential), water is constantly supplied as long as the moping mode is on. S10+) The pump is pulsed, dispensing fluid depending on the speed of movement and the type of surface, and this avoids overmoisturizing the laminate or parquet.

Another important element is the napkin spinning system, which is passive in most Xiaomi robots, where the napkin simply presses against the floor by the weight of the device, but in models with Deep Mopping (like DreameBot). W10) It uses active pressing, where the robot rubs a napkin against a special plate, removing excess water before cleaning, and this reduces the risk of divorce by 40 to 50 percent%.

Work algorithm: how a robot combines dry and wet cleaning

Wet cleaning always comes after dry cleaning, which is a rule that is embedded in the firmware of all Xiaomi robots.

1. Scanner (LDS Or ToF, the robot builds a map of the room and determines the cleaning areas.
2. A vacuum cleaner (with or without a turbobrush) collects large debris and dust.
3. The moping module is activated only after dry cleaning is completed - this prevents the clogging of the napkin with debris particles.
4. The robot moves along an S-shaped trajectory (in most models) or zigzag (in DreameBot), moisturizing the floor.
5. After cleaning, the wipe rises (in models with Auto Lift function) or remains wet - it depends on the firmware.

Interesting fact: in dual-tank models (such as the Xiaomi Mi Mop 2 Pro), the robot can vacuum and wash the floor at the same time, but only on smooth surfaces. On carpets, wet cleaning is automatically turned off, this is prescribed in firmware security.

The time of wet cleaning depends on the model and settings.

Note: in models without auto-lifting napkins (Viomi) V3, Mi Robot Mop Essential, the washing unit is in constant contact with the floor, which means that as you move from tile to carpet, the robot will continue to wash the carpet, which can cause mold or damage to the coating. The solution is to either buy a model with sensors, or manually exclude carpets from the moping zones in the application.

⚠️ Attention: If your Xiaomi robot has started leaving wet marks on the laminate, check: Are the water supply holes in the washing unit clogged (cleaned with a needle); Is the wipe worn out (change every 2-3 months); Is Max Water Flow mode enabled in the settings (suitable for tile only). Most often, the problem is solved by reducing the water supply in the application to Low or Medium.

Wet cleaning settings in the application: hidden functions

Most users are limited to basic settings, but in Mi apps Home/Dreamehome There are hidden parameters that dramatically change the quality of cleaning:

• 🔧 Y-Mopping Mode (available in DreameBot) D9 And newer) — the robot moves along a trajectory in the form of the letter "Y", which increases the napkin cover by 30% and removes divorces.
• 💦 Water Volume Customization - allows you to set a different water flow rate for each room (it is useful if the kitchen has tiles, and the bedroom laminates).
• 🔄 Double Mopping – Double pass through highly contaminated areas (only in manual mode).
• 🚫 Carpet Detection – Automatic disabling of moping on carpets (works only with the help of the carpet). LDS-scanner).

To activate these functions, you need to:

1. Open the Mi Home app → pick up → Cleaning settings → Mode of the puping.
2. In the Dreame models, the way is different: Dreamehome → Cleaning Settings → Advanced.
3. Some options (e.g. Y-Mopping) only appear after updating the firmware to the version. 3.5.8_0030 higher.

✔ Set water consumption on Low or Medium

✔ Activate Y-Mopping (if any)

✔ Disable the mapping on the carpets manually through the map

✔ Use distilled water to prevent plaque

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One of the most useful innovations of the latest models is the Auto Water Refill feature (available in DreameBot). X30 Ultra and Xiaomi S10+). The robot drives itself to the docking station, where:

1. Draining dirty water out of the tank.
2. Washing the napkin with hot water (temperature) ~40°C).
3. It is filled with clean water and detergent (if installed tank).

This allows the robot to wash floors in a house of up to 200 m2 without the user's input, but requires a special docking station with running water (cost from 15 000 000). ₽).

What detergents can be used (and which ones can not)

Xiaomi officially allows the use of branded detergents (for example, Xiaomi Mi Robot Detergent), but in practice, users successfully use alternatives.

• 🧼 pH-neutral means (5.5-7.0) – do not corrode rubber pump seals.
• 🚫 Prohibited bleach, products with chlorine, abrasives or alcohol (>10%).
• 💧 Concentration: no more than 5 ml of the product per 1 liter of water (exceeding leads to foam, which will clog the filters).
• 🌿 Natural alternatives: a weak solution of vinegar (1:10) or citric acid (1 tsp. per 1 l) - remove plaque, but require washing the system after use.

What happens if you pour in a regular floor wash? 90 percent of the time, the robot works fine, but:

• Foam can score HEPA-filter and reduce its service life from 6 months to 1-2.
• Aggressive surfactants will destroy the microfibre napkin - it will become rigid and leave divorces.
• In models with Auto Water Refill, the residues of the funds will settle in the hoses of the docking station, which will lead to clogs.

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To remove persistent contaminants (such as footprints), use Spot Cleaning mode with maximum water supply, and then run the robot in Dry Mop mode to remove the divorces.

If you still want to use a non-original tool, check it for compatibility:

1. Apply 1-2 drops on a napkin and wipe an inconspicuous area of the floor.
2. Wait 10-15 minutes – if there are divorces or stickiness, the remedy is not suitable.
3. Wash the tank and napkin with clean water after cleaning.

Typical Problems and How to Avoid Them

Even the most advanced robots Xiaomi face problems when wet cleaning. TOP-5 User complaints and solutions:

One of the most common mistakes is to ignore the care of the detergent, and after every 3-5 cleaning, you need to:

1. Remove the napkin and wash it under running water (no pressing!).
2. Wipe the plastic case of the washing unit with a wet cloth (especially grooves).
3. Blow the water supply holes (for example, a dryer in cold air).

⚠️ Warning: If the robot has stopped responding to the moping commands (the button in the app is inactive), check: Is the water tank installed - some models block the function if the tank is not recognized. Is the firmware updated (in older versions of the bug with moping - for example, in Mi Robot Vacuum-Mop) 1S beforehand 3.3.9_0020). Is Quiet Mode activated – wet cleaning automatically shuts down.

Comparison of models: which is better to cope with wet cleaning

Not all Xiaomi robots are equally good at moping, we tested 7 popular models and ranked them according to key parameters:

If you want maximum automation, choose DreameBot. X30 Ultra or Xiaomi S10+ — they can:

• Wash and dry the napkin in the docking station.
• Recognize the types of coatings and regulate the water supply.
• Build 3D-room-card.

For a budget option suitable DreameBot D9 — It's cheaper than flagships, but it has a self-lifting napkin and adaptive water supply. But Mi Robot Vacuum-Mop 2 Lite is only for dry cleaning, and its moping is very primitive.

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If your house is more than 50% of the area is carpeted, wet cleaning by Xiaomi robot will be ineffective. T20 Omni, which can clean the pile deeply.

Frequent questions about wet cleaning by Xiaomi robots