Where and how to pour water into the robot vacuum cleaner Xiaomi: detailed instructions with nuances

Xiaomi’s wet-cleaning robots have become indispensable tools in the home, but many users face a basic problem: where to pour water to avoid damaging the device and achieving maximum efficiency. Filling errors can lead to leaks, pump failures, or even short circuits — especially when it comes to electronically controlled water supply models like the Xiaomi Mibot Vacuum-Mop 2 Pro or DreameBot D9.

In this article, we will look at all possible tank designs (removable, integrated, valve-based), show step-by-step photo instructions for popular models, and reveal hidden settings in the Mi Home app that affect water flow.

Types of water tanks in Xiaomi robot vacuum cleaners

The manufacturer uses three main types of water tanks, and the process of filling depends on it.

• 🔋 Removable tank with a lid is the most common option (MiJia models) 1C, Viomi V2). Water is poured directly through the hole under the lid.
• 🔄 Built-in valve tank - found in premium models (DreameBot) Z10 Pro) Requires care when opening the valve.
• 💧 Automatic dosing system – water is supplied from a separate tank through a pump (e.g. Xiaomi Mi Robot Vacuum-Mop P.

If you are not sure about the type of tank, check the model name on the sticker under the device or in the Mi Home app in the Devices → Information section. Some models (for example, the Viomi SE) have the tank combined with the dust collector, in which case the water is poured into a separate compartment, marked in blue.

Step-by-step: how to properly pour water

The algorithm of actions depends on the design of the tank, but there are universal rules that are suitable for all models:

1. Disconnect the robot from the charging station and make sure it is off (the indicator does not blink).
2. Remove the water tank — it's usually mounted on latches or threads. In DreameBot models, you may need to press the Release button.
3. Wash the tank with warm water (without detergents!), if you poured water before - this will prevent the formation of plaque.
4. Fill the tank with filtered or distilled water to the MAX mark (usually 200-300 ml).
5. Install the tank back, making sure the sealing gum hasn't shifted.

For models with electronic water supply control (for example, Xiaomi Mi Robot Vacuum-Mop 2 Pro) after installation of the tank you need:

1. Turn on the robot and wait for the sound signal (the beep confirms tightness).
2. In the Mi Home app, go to Cleaning Settings → Wet Cleaning and select the intensity level (e.g., Medium for laminate).

Study the instruction for the model|Check the integrity of the sealing gum|Use only filtered water.|Do not exceed the mark MAX|Ensure the tightness of the tank after installation-->

The Viomi V3 and DreameBot D9 have a dual camera, one for clean water, one for dirty water, and you only need to pour water into the blue-labeled compartment!

What water can be used: myths and reality

Many users mistakenly believe that any water is suitable for a robot vacuum cleaner, and in fact, the quality of the fluid directly affects the life of the pump and tubes.

A critical nuance: if your region has hard water (more than 7 mg-eq/l), even filtered liquid can cause a coating on heating elements (in models with floor drying function, such as DreameBot W10), in which case it is recommended to add special softeners for robot vacuum cleaners (sold in household chemicals stores).

⚠️ Warning: If white stains remain on the floor after cleaning, this is a sign of using hard water.Rinse the tank and tubes immediately with vinegar solution (1:1 with water), then rinse with clean water.

Common Mistakes and How to Avoid Them

Even the most experienced users sometimes make mistakes when pouring water. TOP-5 problems and ways of solving them:

• 🚫 Water overflow above the mark MAX → Leads to leaks and damage to electronics. Solution: use a measuring glass.
• 🚫 Use of detergents → The foam can damage the pump.Solution: only special fluids for robot vacuum cleaners (e.g. Xiaomi Mop Cleaner).
• 🚫 Pouring water into the dust collector → Frequent error in removable container models (e.g. Viomi) SE). Solution: Focus on the blue mark.
• 🚫 A loosely closed tank lid → Water leaks out during cleaning. Solution: Check the click when closing.
• 🚫 Long-term storage of water in the tank → Bacteria develop. Solution: drain water after every cleaning.

Special attention should be paid to models with a self-cleaning brush system (for example, DreameBot L10 Pro), where water is used not only for floor washing, but also for washing rollers, if you pour too little water, the robot will give an E5 error (insufficient fluid level) and stop cleaning.

Wet cleaning settings in the Mi Home app

Many users don't know that the water intensity can be controlled software-based, and this is especially true for electronically controlled models like the Xiaomi Mi Robot Vacuum-Mop 2 Pro or DreameBot D9.

1. Open the Mi Home app and select your robot vacuum cleaner.
2. Go to Cleaning Settings (or Cleaning Settings in English).
3. Find Mopping and select one of the modes: Low for delicate coatings (laminate flooring, flooring), Medium for tiles and linoleum, High for severe contaminants (water resistant only!).

Save the settings and start cleaning.

In some firmware, the Zone Cleaning with Power is available, which allows you to increase the water supply in selected areas (for example, in the hallway), to activate it:

1. In the app, click "Zones" → "Add Zone."


2. Select the desired area on the map.




3. In the zone settings, select "Enhanced wet cleaning".

⚠️ Warning: If the robot starts leaving puddles after changing the settings, check the condition of the tank's sealing gum - it could have deformed. Replace it with the original one (Article for MiJia) 1C — ZNMS13WM).

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Before you clean the water, run the robot in Vacuum Only mode to map the room, which will help to avoid water getting on carpets and upholstered furniture.

Water tank maintenance: cleaning and storage

To extend the life of a robot vacuum cleaner, the water tank requires regular maintenance, and the manufacturer recommends cleaning after every 5-7 cycles of cleaning.

1. Pour the remaining water and wash the tank with warm water (temperature not higher than 40 ° C).
2. Use a soft brush or sponge to remove plaque. It is forbidden to use abrasives!
3. Dry the tank in the air (do not use a hair dryer or battery).
4. Check the condition of the sealing gum - if it has become hard or cracked, replace it.
5. For disinfection, you can use a solution of vinegar (1 tbsp. l. per 1 liter of water), but not more often than 1 time per month.

If you have a bad smell in the tank, it's a sign of bacteria multiplying.

• 🧼 Soak the tank in a solution of baking soda (2 tsp. per 1 liter of water) for 30 minutes.
• 🧽 Wash under running water and dry.
• 🚫 Don’t use bleach or aggressive chemicals – they can damage plastic.

For long-term storage (for example, if you are going on vacation):

• 💧 Completely drain the water and dry the tank.
• 🔌 Remove the tank from the robot and store separately in a dry place.
• 📦 If the robot is not used for more than a month, remove the dust collector and brushes.

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Regular cleaning of the water tank prevents 80% of the damage caused by the wet cleaning system, use only mild detergents and avoid mechanical damage to seals.

Comparison of Xiaomi models on the wet cleaning system

Not all Xiaomi robot vacuum cleaners are equally effective at washing floors, and we tested popular models and compiled a comparative table:

If you want to maximize the efficiency of wet cleaning, look for vibrating mop models (e.g. Xiaomi Mi Robot Vacuum-Mop 2 Pro) that not only spray water, but also mechanically rub the floor to remove even dried stains, but require more careful care of the tank and pump.

FAQ: Frequent questions about pouring water into Xiaomi robot vacuum cleaner