Automating house cleaning has long since become a fantasy, becoming a standard of comfort. Modern models of robot vacuum cleaners from Xiaomi and the Mijia ecosystem are able not only to collect dust, but also to perform high-quality wet treatment of surfaces. However, many users face difficulties in the first start of the function of washing or get divorced on the floor due to improper operation.
In this detailed guide, we will take a look at all the nuances of preparing, configuring and maintaining a wet cleaning system, learn how to avoid typical errors that can lead to device failure or flooring damage. The right approach to operation guarantees the perfect result and prolongs the life of your smart assistant.
Preparation of the device and choosing the right model
Before you start the process, you need to make sure that your device is technically ready for contact with water. Not all Xiaomi robot vacuum cleaners have a built-in module for wet cleaning. Basic models such as the Mi Robot Vacuum 1S may require the purchase of a separate module, while the flagships of the Xiaomi Vacuum Mop or Roborock S series are equipped with integrated tanks. It is important to check the configuration: the box must contain a water tank, often combined with a garbage container, or a separate module with electronic water supply.
Wet cleaning requires more energy than dry cleaning, because a pump or vibration platform needs stable power. If the battery is below 20%, the robot can either abandon the task or interrupt it in the middle. Always put the device on base before starting a long cleaning cycle.
⚠️ Warning: Never use a robot vacuum cleaner without a special water module on carpets. Even a minimal amount of moisture can irrevocably spoil the pile and cause mold inside the carpet.
For models with electronic water supply, it is critical to use only purified liquid. Conventional tap water contains calcium and magnesium salts, which eventually form scale. This scale clogs micro-channels in the pump and filters, which leads to uneven moisture distribution or complete failure of the pump. Distilled or filtered water is a prerequisite for a long life of the equipment.
Installation and configuration of the module for wet cleaning
The process of mounting the water module varies depending on the specific robot model. Most of the time, you need to remove a standard dry garbage container and install a combined tank or a separate module with a cloth in its place. Make sure the module snaps to the characteristic sound. If the fixation is incomplete, the sensors may not recognize the presence of the tank, and the robot will give an error.
After the physical installation, a microfiber wipe must be prepared. The fabric must be clean and slightly wet, but not wet. Some models, such as the Xiaomi Mi Robot Vacuum Mop 2 Pro+, have automatic wetting, where the cloth is attached to a special platform. Other, simpler versions require manual attachment of the fabric to the Velcros or clamps on the bottom of the device.
☑️ Pre-launch checks
It's important to navigate the module correctly when you're installing it. The electronic water supply contacts must match the contacts on the robot body. If you confuse the side, the water can flow inside the body, which will short-circuit the electronics. Visually inspect the bottom of the robot before you start working.
Setting up parameters in the Mi Home app
The main control over the cleaning process is through the Mi Home or Xiaomi Home mobile app. This is where the water intensity is fine-tuned. In the app interface, select your device and go to cleaning mode. Usually there is a drop icon or a water level setting.
Different types of coatings require different settings, for example, for ceramic tiles or linoleum, you can set medium or high feed levels, for laminate or parquet that are afraid of excess moisture, you need to choose the minimum mode. In modern models with intelligent carpet recognition, the robot will reduce the intensity or completely turn off the water supply when you enter the villous surface.
- 💧 Low level – ideal for light ground refreshment and sensitive coatings.
- 💧 Medium level – suitable for daily maintenance cleaning in rooms with normal patency.
- 💧 High level – used to remove old spots and severe contaminants on persistent surfaces.
You can also set up no-go zones in the app, and you can use virtual walls to designate areas where the robot is not allowed to come in with a wet module, and this is especially true for areas with carpets that can't be wet, or places where there's a bowl of water for pets.
Water supply technologies: comparison of systems
Understanding how your device works will help avoid frustrations: Xiaomi devices and sub-brands (like Roborock, Dreame) use three basic humidification systems: the first is gravity, where water just drips by its own accord through the valve, an outdated technology that often leads to puddles or dry cloth.
The second and most common is an electronic pump, which has a miniature pump in the tank that, on the controller's command, delivers strictly dosed portions of water to the napkin, which ensures uniform hydration throughout the entire cycle, regardless of the remaining water in the tank, and the third type is an ultrasonic or vibration platform that not only delivers water, but also performs reciprocal movements, simulating manual friction.
| Type of system | Uniformity | Risk of leakage | Efficiency |
|---|---|---|---|
| Gravitational | Low. | High-pitched | Basic |
| Electronic pump | Tall. | Low. | Good. |
| Vibrational (Sonic) | Maximum | Minimum | Great. |
Selecting a model with an electronic pump is a priority for cleaning quality, saving water and ensuring that the robot does not leave behind a lake. Water flow statistics are often available in the application for such models, which helps to plan the frequency of the watering.
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Startup process and cleaning monitoring
After all the preparatory steps, you can start the robot. Press the Start button in the application or on the device body. The robot will start building the map (if it is the first run) or move to cleaning the saved route. During operation, the device will periodically stop to supply water to the cloth.
It's important to monitor the behavior of the robot as it works, and if you notice that it's starting to smear dirt rather than pick it up, it's a signal that the wipe is too dirty. In these cases, the automatic return robots can go to rinse the mop themselves (in self-cleaning models), but the regular models will continue to drive with the dirty cloth. Periodically check the status of the cleaning through the app.
The wet cleaning cycle is usually longer than dry cleaning. The robot moves more slowly and can make additional passes through contaminated areas. Do not interrupt the process unnecessarily, as this can knock down the mapping algorithm and lead to entire rooms being skipped the next time you clean.
⚠️ Warning: If the robot makes unusual sounds or stops with a pump error, immediately remove the water module.
Module care and after-work maintenance
Proper care after cleaning is the key to the absence of odor and bacteria. After the cycle is completed, be sure to remove the module for wet cleaning. The remaining water in the tank can bloom, especially in the warm season, drain the remaining fluid and wash the tank with clean water.
A microfiber wipe must be removed, rinsed and dried. A moist cloth left on a robot or in a closed tank will be the perfect medium for mold to breed, which will cause an unpleasant musty smell during the next cleaning. Regularly washing the cloth at 60 degrees will help maintain hygiene.
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Once a month, wipe the contacts of the electronic pump with a dry cotton swab. Oxidation of the contacts can disrupt the signal transmission and the pump will stop supplying water.
You should also clean the water level sensor and the valves, sometimes they get villi or dust, which interferes with normal operation, carefully wipe these elements with dry soft cloth, do not use aggressive solvents to clean the plastic elements of the tank.
Addressing common problems
Even when properly operated, there can be failures. One of the common problems is that the robot reports no water even though the tank is full. This can mean a filter clogging or an air jam in the system. Try shaking the tank gently several times or blowing the air supply hole.
Another problem is that the stripes on the floor, which often happen if the cloth is dry or too wet, adjust the feed level in the app, and the stripes can remain if the robot moves too fast for the selected mode, trying to save battery power, in which case you'd better choose Careful Cleaning mode.
- 🚫 Robot can’t see tank – check the purity of contacts and correct installation.
- 🚫 Uneven moisturizing – replace or wash a napkin, check the filter.
- 🚫 Meadows on the floor – reduce the intensity of water supply in the application settings.
If the problems are systemic and not solved by software, you may need to replace the pump or sealing gums, in which case you should contact an authorized service center.
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Regular maintenance and use of distilled water prolongs the life of the pump by 3-4 times, eliminating expensive repairs.