Robot vacuum cleaner Xiaomi does not supply water to the cloth: the reasons and how to fix

Your Xiaomi robot vacuum cleaner suddenly stopped moisturizing the floor even though the tank is filled with water? This problem occurs in Mi Robot Vacuum-Mop 2 Pro models, Xiaomi Mijia 1T, Dreame W10 And other wet cleaning devices, most often caused by clogging, software errors, or mechanical breakdowns. In this article, we will analyze all possible reasons why water does not flow to the cloth, and give step-by-step instructions for troubleshooting - from simple cleaning to replacing components.

Before you take the device to the service center, check the basics: is the water tank installed correctly, is the supply hose compressed, is there air in the system. In 60% of cases, the problem is solved in 10 minutes without disassembling the vacuum cleaner, and if the diagnosis showed a serious breakdown, we will tell you how to save on repairs and what parts to buy.

1. Checking for obvious reasons: what to do first

Start with visual inspection and settings, and users often miss little things that make the robot refuse to supply water:

• 🔋 Battery level: At less than 20%, many Xiaomi models block the wash function to save energy. Connect the vacuum cleaner to charge for 30-60 minutes and try again.
• 💧 The tank must be fixed tightly before the click, and if the lid fits loosely, the sensor fails to work and the water is not supplied.
• 📱 In-app cleaning mode. In Mi Home or Xiaomi Home, check if the Mop Mode option is enabled. Sometimes the settings are lost after the firmware update.
• 🚫 Locking due to an error, if there is a badge on the vacuum cleaner screen or in the application ⚠️ coded (e.g., coded, E10 or E15), This may indicate a blockage or a pump malfunction.

Also make sure there's no air in the tank.

1. Remove the tank and tilt it at an angle of 45.°.
2. Press the water supply button (if any) or shake the tank slightly to release bubbles.
3. Install it back and check the work.

⚠️ Warning: Do not use hot water or aggressive detergents (e.g. chlorine) to wash floors, causing a run on the hoses and causing the valve to fail.

2.Closure of the water supply system: how to clean hoses and nozzles

The most common cause of water deprivation is clogging of pipes or sprayers, and dust, lime plaque, and detergent particles accumulate in narrow channels, blocking the flow, and you can do it yourself without tools.

Step-by-step:

1. Remove the water tank and inspect it for cracks or contaminants. Rinse it under running water.
2. Disconnect the feed hose (usually attached to the tank with a plastic locker). Carefully pull it over yourself.
3. Blow the hose with your mouth or with a bicycle pump, and if the air doesn't pass, it's a serious clog.
4. Wash the hose with warm water with vinegar (a ratio of 1:1) or a special means to remove scale. Leave for 15-20 minutes, then rinse.
5. Clean the nozzle (sprayer on the bottom of the vacuum cleaner) with a toothpick or a needle. Do not use metal objects - you can damage the membrane.

If the clog is not eliminated, try reverse washing:

• Fill the tank with warm water with citric acid (1 tbsp. spoon per 500 ml).
• Connect the vacuum cleaner to charging and turn on the wash mode for 2-3 minutes.
• Repeat the procedure 2-3 times, then rinse the system with clean water.

Remove and flush the water tank|

Clean the feed hose|

Clean the nozzle on the bottom|

Wash the system with vinegar (when raided)|

Check the seals for wear-->

3. Faulty pump or valve: how to diagnose

If the cleaning didn’t help, the problem may lie in the electronic components:

• Water pump – is responsible for creating pressure in the system.
• Electromagnetic valve - opens / closes the flow on the command from the board.
• Water level sensor – blocks work in the absence of liquid.

How to check the pump:

1. Remove the bottom cover of the vacuum cleaner (usually attached to 4-6 screws).
2. Find the pump - it's a small cylindrical block with connected tubes.
3. Disconnect the hoses and apply voltage to the pump 5V (You can use a charger from a phone with a cut cable. If it doesn't buzz, it's faulty.

Signs of valve failure:

• 🔊 The pump is working, but the water is not coming.
• 💦 Water flows constantly even when cleaning is not active.
• ⚡ There's an error in the app. E15 or E18.

⚠️ Attention: Don't try to disassemble a pump or valve without experience. There may be springs or membranes inside that are easily damaged. If you're not sure, contact the service.

Replacement cost:

• Pump - from 800 to 2000 rubles (depending on the model).
• Valve - from 500 to 1200 rubles.
• Level sensor - from 300 to 700 rubles.

4.Firmware problems and resetting settings

Sometimes the water is not supplied because of a software failure, and this is true after an update or an incorrect shutdown of the vacuum cleaner.

• 📱 The app does not display water level.
• ⚙️ The washing mode is turned on, but the water is not going.
• 🔄 The vacuum cleaner "hangs" at the start of cleaning.

How to reset your settings:

1. Open the Mi Home or Xiaomi Home app.
2. Go to the device settings (⚙️ → General. → Resetting settings).
3. Confirm the reset. The vacuum cleaner will reset.
4. After turning it on, reconnect it to Wi-Fi and set up wash mode.

If the reset didn’t help, try updating the firmware manually:

1. Download the latest version of the software for your model from the official Xiaomi website.
2. Unpack the archive and place the.pkg file in the root SD-Cards (if your model supports an upgrade from your memory card).
3. Insert the card into the vacuum cleaner and hold the power button for 10 seconds until the update indication appears.

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Before you update your firmware, take a screenshot of your current settings in the app, and after you reset, you'll have to reset your cleaning areas, schedule and water level.

Wear or damage to rags and fasteners

Over time, the washing cloth and its attachment wear out, which leads to poor contact with the sprayer.

• 🧼 The condition of the cloth. If it's hard or coated, the water won't absorb. Wash it by hand with soap or replace it (the original cloths for Xiaomi are worth it). ~300 rubles.).
• 🔗 Cloth fastening. Make sure the clasps are not broken and the cloth fits tightly to the sprayer. In some models (e.g. Dreame). W10) mounting over time.
• 💦 Spray on the bottom, look at it for cracks or blockages, if the nozzle is damaged, water will flow past the cloth.

How to properly install the cloth:

1. Remove the old cloth, wash the dust mount.
2. Wet and squeeze the new cloth (it should be wet, but not dripping).
3. Fix it so that the hole for the sprayer coincides with the nozzle on the vacuum cleaner.
4. Make sure the edges of the cloth are not bent and do not block the water supply.

⚠️ Warning: Do not use rags from other brands (e.g. Roborock or Ecovacs) that may not fit in size or material, leading to leakage or poor cleaning.

6 Mechanical breakdowns: when without service can not do

If all the previous methods didn't work, it's likely that the problem is a serious mechanical failure.

When to contact the service:

• 🔧 You are not sure about your skills in disassembling equipment.
• 💸 The cost of spare parts exceeds 30% of the price of a new vacuum cleaner (in this case it is more profitable to buy a new one).
• ⚡ Vacuum cleaner warranties (self-repair cancels Xiaomi warranty).

How to choose a service center:

• Check the reviews on Yandex.Maps or 2GIS.
• Check if they work with Xiaomi appliances (some services only specialize in Samsung or other services). LG).
• Ask for a warranty for repairs (at least 3 months).

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If the vacuum cleaner is warranty, do not disassemble it yourself! Contact the official Xiaomi service - repair will be free in case of industrial defect.

7 Prevention: How to avoid problems in the future

To ensure that the Xiaomi robot vacuum cleaner served for a long time without breakdowns, follow these recommendations:

• 🚿 Use only filtered water. Hard tap water leaves a stain in the hoses and pump.
• 🧹 Clean the vacuum cleaner after each cleaning: Empty the dust container. Wash the water tank and the cloth. Clean the brushes and wheels from the hair.
• 📅 Change the consumables on time: Cloth - every 3-6 months. HEPA — Every 6 months, side brushes once a year.
• 🔋 Store the vacuum cleaner correctly: At the charging station (not discharged). In a dry place (humidity) < 60%) No water in the tank (unless you use more than 3 days).

What NOT to do:

• ❌ Use abrasive detergents (e.g. powders).
• ❌ Put the vacuum cleaner under direct sunlight (plastic can be deformed).
• ❌ Wash a rag in a washing machine (it will lose absorbent properties).

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Once a month, dry cleaning without water will help to clear the system from plaque. To do this, turn on wet cleaning mode without filling the tank for 2-3 minutes.

FAQ: Frequent questions about water supply in Xiaomi robot vacuum cleaners