How to set up a robot vacuum cleaner Xiaomi for wet cleaning: instructions for all models

Xiaomi’s robot vacuum cleaners have long since ceased to be just dry cleaning devices.Modern models range from the budget Mi Robot Vacuum-Mop 2 Lite to the flagship DreameBot X30 Ultras are equipped with a wet cleaning function that allows you to vacuum and wash floors at the same time, but many users face problems: the robot leaves the divorce, does not wash corners or ignores the moping mode altogether. The reason most often lies in the wrong configuration or ignorance of the nuances of the system.

In this article, we will discuss how to properly activate wet cleaning on Xiaomi, Dreame and Viomi robots (including self-cleaning models), what settings are responsible for the intensity of washing, and how to avoid typical errors. Special attention will be paid to the compatibility of fabric nozzles and detergents, this point is often missed even by experienced owners. If your robot is already equipped with a water tank, but you still haven’t tried the function, this guide will help you take the first step without risking damage to the equipment or flooring.

Which Xiaomi models support wet cleaning?

Not all Xiaomi robot vacuum cleaners can wash floors, and the wet cleaning feature is available in the following series:

• 🔹 Mi Robot Vacuum-Mop (all modifications including 2 Lite, 2 Pro, P)
• 🔹 Dreame (series) D9, D10, Bot Z10 Pro, X30 Ultra and newer)
• 🔹 Viomi (models with the prefix Vacuum-Mop, for example) V3 or SE)
• 🔹 Roborock (lines) S7, S8, Q5, Q8 — Although the brand is now independent, many models are compatible with the Xiaomi ecosystem)

To find out exactly if your model supports wet cleaning, check out:

1. A removable water tank (usually white or transparent) on the body of the robot.
2. Complete fabric nozzle (can be microfibre or from other moisture-absorbing material).
3. Item Cleaning regime → Wet cleaning in the mobile application Mi Home/Dreame/Roborock.

Attention! If your model doesn't have a water tank, but the app has a "wet cleaning" option, it could be a firmware error. Don't put water in the vacuum cleaner without a special tank, it will cause a breakdown!

Preparing the robot for the first wet cleaning

Before the first start of the moping mode, several mandatory steps must be taken, and skipping at least one of them can lead to leaks, divorces or even failure of the equipment.

Install a fabric nozzle on the bottom of the robot|

Pour water into the tank (not above the maximum mark)|

Check the tightness of the tank cover|

Remove carpets and palaces from the robot’s path|

Choose the right detergent (or refuse it)|

Update the robot firmware to the latest version-->

Let’s look at each item in more detail:

Installation of a fabric nozzle

The fabric nozzle is mounted on the bottom of the robot, under the main brush or behind (depending on the model), usually with 1-2 replacement nozzles to fit it:

1. Turn the robot over and find a plastic cloth holder.
2. Spread the nozzle and pull it over the holder, making sure that the edges do not stick out.
3. Fix with velcros or latches (if provided by the design).

Important: The nozzle should fit tightly to the floor. If it dangles or moves to the side, the robot will leave dry stripes. X30 Ultra and Roborock S8 Pro Ultra uses rotating mops - they need to be fixed before clicking.

2.Pouring water and detergent

The water tank is located either on the body of the robot (in budget models) or in the docking station (in premium versions with self-cleaning).

• 💧 Use only pure water (better distilled or boiled to avoid plaque).
• 🧼 Cleaners can only be added if the manufacturer allows. For most Xiaomi models, special liquids Xiaomi Mi Mop Liquid or analogues from Dreame are suitable.
• ⚠️ Do not exceed the maximum level (usually marked on the tank!

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For the first cleaning test, use only water – so you can assess how the robot copes with contamination without the risk of damaging the coating with detergent.

3. Leakproofness check

After pouring the water, make sure the tank lid is tightly closed. In models with water flow control electronics (e.g. DreameBot) X30 Ultra) may cause an error when closed E5 or E6.

Also check:

• 🔌 Contacts on the tank and robot (should be dry and clean).
• 🛠️ No cracks in the tank (especially if the robot fell).

Setting up wet cleaning in the application

Cleaning modes are managed through an official app (Mi Home, Dreame or Roborock) and the interface may vary slightly depending on the model, but the overall logic is the same.

1. Selection of cleaning mode

Most apps have 3 main options:

For the first cleaning, we recommend choosing a vacuum cleaner. + Mop, which is how the robot collects dust and then rinses the floor. In Dreame, this mode can be called Vacuum & Mop.

2. Adjusting the intensity of the washing

In advanced models (DreameBot) X30 Ultra, Roborock S8 Pro) is the adjustment of the mop pressure force and water flow rate:

• 🌊 Water level: Low (for laminate), Medium (for tile), High (for persistent pollution).
• 🔄 Mop pressure: affects the force of friction on the floor (relevant for rotating nozzles).
• 🔄 Number of passes: Some robots can pass the same place 2-3 times for better results.

Tip: For wax-impregnated parquet or laminate, choose low water levels to avoid swelling of the coating. Maximum mode can be used for porcelain or stone flooring.

Zoning and no-go zones

To prevent the robot from washing carpets or entering rooms with a high pile, set up forbidden areas or virtual walls:

1. Open the room map in the application.
2. Click Add the Zone → Prohibited Zone.
3. Circle areas that need to be excluded (such as carpets or rapids).
4. Save the changes.

LiDAR models (e.g. DreameBot) D10 Plus, you can also set up different cleaning modes for individual rooms, for example, in the kitchen - vacuum cleaner. + Mop, and in the bedroom - only vacuum cleaner.

Common Mistakes and How to Avoid Them

Even with the right setup, users often face problems, and here are the most common errors and solutions:

⚠️ Attention! If you have a wet cleaning, it means that the robot is either not pressing the fabric enough or using too much water. Try to reduce the water level in the settings or replace the fabric nozzle with a denser one.

1.The robot doesn't wash the floor (dry cloth)

Causes and solutions:

• 🚫 Clogged water channel: wash the tank and tubes under running water.
• 🔋 Battery drained: wet cleaning requires more power. Charge the robot to 100%.
• 🛠️ Faulty pump: if the water does not come even with a full tank, contact the service.

2. Water leakage

Leaks most often occur due to:

• 💦 Water overflow: Always watch the label MAX tank-side.
• 🔩 Poorly closed cover: make sure it clicks when closing.
• 🧽 Contaminated sealant: wipe rubber gaskets with alcohol.

3.The robot leaves dirty stripes

This happens if:

• 🧺 The cloth nozzle is dirty: wash it after each cleaning (manually, without bleach).
• 🧼 Cleaning product is not suitable: use only specialized liquids for robot vacuum cleaners.
• 🔄 Too fast: reduce the speed of cleaning in the settings.

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If the robot started leaving stripes after updating the firmware, try rolling it back to the previous version or wait for a patch from the manufacturer.

Xiaomi Mi Robot Vacuum-Mop 2 Pro

Care of the wet cleaning system

To ensure that the robot lasts a long time, and the quality of washing does not deteriorate, follow these recommendations:

1. Cleaning the water tank

After each cleaning:

1. Pour the remaining water.
2. Wash the tank with warm water (without detergents!).
3. Dry it in the air (do not use a hair dryer or battery!).

If there is a plaque or an unpleasant odor in the tank, soak it for 1-2 hours in a solution of vinegar (1: 1 with water), then thoroughly rinse.

Washing of fabric nozzles

Microfiber nozzles can be washed manually or in a washing machine (in a bag for delicate things) at temperatures up to 40.°C. Don't use it:

• 🧼 Bleach or aggressive powders.
• 🌡️ Hot water (can deform fibres).
• 🧺 Air conditioning for laundry (deteriorates absorption).

The life of the nozzle is about 3-6 months (depending on the intensity of use), when the fabric becomes hard or does not absorb water well, it is time to replace it.

3. Dock maintenance (for self-cleaning models)

Self-cleaning robots (e.g. DreameBot) X30 Ultra requires additional care:

• 🧽 Clean the hair and thread rollers once a week.
• 💧 Change the water in the tank after each cleaning cycle.
• 🔧 Check the drain hose for blockages (especially if the robot makes a mistake) E3).

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For self-cleaning models, use special disinfecting tablets (such as Dreame Cleaning Tablets) to prevent mold and bacteria from appearing.

Comparison of wet cleaning regimes in different models

The functionality of wet cleaning varies greatly depending on the model, and the table below compares the key parameters:

As you can see from the table, budget models (Mi Robot Vacuum-Mop 2 Lite) are suitable for small apartments, while premium ones (DreameBot) are suitable for small apartments. X30 Ultra) cope with large areas and offer automatic drying of mops, which is especially important for humid climatic zones.

What to do if the robot is not washing well?

If, after all the settings, the robot is still not coping well with pollution, try the following steps:

1. Check the condition of the brushes and mop: worn parts will not be able to remove dirt qualitatively.
2. Update the map of the room: sometimes the robot "does not see" highly contaminated areas due to errors in navigation.
3. Use the "deep cleaning" mode (if any in your model) which increases cleaning time but improves the result.
4. Change water for distilled: hard water from the tap can leave a divorce.
5. Install an additional filter (for example, HEPA Better collection of dust before washing).

Critical case: If the robot has stopped spraying water at all, and the tank and pump are in good condition, the problem could be the electronics, in which case a diagnosis is required at the service center.

FAQ: Frequent questions about wet cleaning