Complete Guide to Maintenance of Xiaomi Mi Robot Vacuum-Mop S1

Xiaomi Mi Robot Vacuum-Mop S1 — One of the most popular robot vacuum cleaners on the market, thanks to its combination of suction power, intelligent navigation and wet cleaning function, but even the most advanced device requires regular maintenance to keep performance at a high level. Neglect of care leads to reduced cleaning efficiency, sensor breakdowns and shortened battery life.

In this article, we will discuss all aspects of maintenance – from basic brush cleaning to error diagnosis and firmware updates. You will learn how to avoid typical problems (such as jamming a side brush due to coiled hair or 10 error when locking the sensor), and you will also receive checklists for weekly and monthly care. Instructions adapted to the latest version of Mi Home (2026) and take into account the features of the model S1 (unlike S1 pro S1E).

1. Daily care: what to do after each cleaning

Even if Xiaomi S1 He's doing his own cleaning, and he needs minimal attention after he's done his job:

• 🧹 Clean the main dumpster. Remove it, remove the trash, and wipe it with a wet wipe. Don't use aggressive detergents, they can damage the plastic.
• 🌀 Side brush check: Wrapped animal hair, threads, or hair block rotation, remove the brush (turn counterclockwise) and remove contamination with scissors or tweezers.
• 🔋 Charging station contacts. Wipe them with a dry cloth - oxidation of contacts leads to charging errors (code 5 in the application).

Pay special attention to the impact sensors (located around the perimeter of the body), their contamination leads to false positives or, conversely, to blows against furniture, wipe them with soft lilaless fabric soaked in alcohol solution (no more than 70% alcohol!).

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If the robot is getting lost in space or building a map with errors, check the lidar (top sensor). The dust on its glass distorts the laser beam. Clean the lidar only with a dry napkin for optics!

Don't ignore the condition of the roller brush (central), and it often accumulates hair on the shaft, which eventually thickens and blocks rotation.

1. Remove the brush by pressing the locks on the sides.
2. Remove the caps from the bearings and remove the contamination with a toothpick.
3. Wash the brush under warm water (no detergents!) and dry for 24 hours before installation.

2. Deep cleaning: disassembly and maintenance of key nodes

Every 1-2 months, Xiaomi S1 It requires a complete disassembly to clean out hard-to-reach areas (PH00), Tweezers, microfiber wipes and isopropyl alcohol:

Turn off the power supply and remove the battery|

Take a picture of the location of the screws before unscrewing|

Prepare the container for small parts (screws, springs)|

Work on a light surface so you don’t lose details.

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Step 1: Remove the top cover. Unscrew the 4 screws on the bottom of the body (under the rubber legs). Carefully tuck the lid with a plastic card starting at the back. Be careful, there are plumes inside that connect the power button and the lidar.

Step 2: Clean up the suction system. The main problems are:

• 🌀 Suction turbine. Remove it by unscrewing 2 screws, and remove dust from the blades with compressed air (keyboard cleaner). Never use a vacuum cleaner to purify - this will damage the bearings!
• 🔗 Take all the plastic channels with a cotton swab dipped in alcohol, and clogged ducts reduce suction power by 30 to 40%.
• 🔋 Battery contacts. Oxidation leads to error 9 ("Battery problem"). Clean contacts with a stripe or alcohol.

Step 3: Lubricate moving parts. After cleaning, apply silicone lubrication (e.g., grease, WD-40 Specialist on:

• The axis of the roller brush (1 drop).
• Wheel bearings (1 drop on each side).
• The mechanism of the side brush (only if it rotates with difficulty).

3. Battery maintenance: how to extend the service life

Xiaomi Lithium-ion battery S1 (The capacity of 3200 mAh is designed for 500-800 charging cycles, but if you use it improperly, this figure is reduced to 300:

• 🔌 Don’t keep the robot constantly charging. Once you reach 100%, disconnect it from the station or set a charge limit of up to 80% in the Mi Home settings (Settings) → Nutrition → Optimizing the battery).
• 🔄 Full discharge is harmful. Don't let the charge fall below 20%. If the robot has not been used for a long time, charge it to 50% and store it in a cool place (15-20).°C).
• 🌡️ Avoid overheating. Do not place a charging station near heating batteries or in direct sunlight. Optimal operating temperature: 10-35°C.

If the robot starts to discharge quickly (for example, it works less than 40 minutes instead of the stated 90 minutes), perform the battery calibration:

1. Discharge the battery to 0% (the robot will shut down).
2. Connect to charging and wait 100% (don’t interrupt the process!).
3. Repeat the cycle 2-3 times.

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If the calibration time is not restored, the battery is worn out. Replace it with the original one (Xiaomi). LDS6.0) Battery for Mi Robot Vacuum with a capacity of at least 3200 mAh).

Errors related to battery:

• Error 9 is a problem with the contacts or the charge controller. Check the battery connection to the motherboard.
• Error 14 is low voltage. Replacement of battery.

4. Update firmware and reset settings

Regular firmware updates fix navigation errors, add new features (such as zoning spaces) and improve cleaning algorithms. Check the relevance of the software at least once a quarter.

How to update firmware:

1. Open the Mi Home app and go to the Device Profile → Settings → Firmware update.
2. If a new version is available, click Update, make sure the robot is connected to the charging station and has a charge level of at least 50%.
3. Don't interrupt! It takes 5-15 minutes to update. The robot will restart automatically.

What to do if the update is suspended:

• Wait 30 minutes – sometimes the process takes longer due to slow internet.
• If the robot does not respond, perform a forced reboot: hold the power button for 10 seconds.
• If the error is repeated, reset the settings to factory (Settings) → Additionally. → Reset).

Reset to factory settings is necessary if:

• The robot doesn't connect to Wi-Fi.
• He's constantly dropping the map of the room.
• You're selling the device.

For discharge:

1. Annex: Device profile → Settings → Additionally. → Reset.
2. Through buttons: Hold Spot Cleaning and Home for 5 seconds before the beep.

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Once reset, the robot will lose all stored maps and zone settings. Export the maps to Mi Home in advance (if the feature is available in your version of the software).

5. Diagnostics and elimination of typical errors

Xiaomi S1 It shows errors in voice or code in the app:

Error 10 (collision sensor) often occurs after a robot falls or a heavy impact.

1. Check the integrity of the sensor (it should not stagger).
2. Calibrate sensors: in the application select Settings → Additionally. → Sensor calibration.
3. If the sensor is damaged, replace it (article: ZNMS12DM for S1).

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If the robot is constantly giving out error 3 ("wheel problem"), but the wheels are clean, check the rubber pads on the axles. Over time, they wear off, and the wheels begin to lash out. Replace the pads or the entire wheel assembly (set). XMSH02QM).

Error 15 (Lidar) can be associated not only with pollution, but also with a software failure.

• Reboot the robot (hold the power button for 10 seconds).
• Update the firmware to the latest version.
• Reset Lidar settings: in the application Settings → Map. → Lidar discharge.

6. Replacement of consumables: what and when to change

Even with regular cleaning, some Xiaomi details S1 They're worn out and need replacement:

How to choose consumables:

• 🛒 Original parts guarantee compatibility, but cost more.Buy them from official dealers (for example, at Xiaomi Store or AliExpress from trusted sellers).
• 🔍 Analogues are cheaper, but check reviews. HEPA Roborock is suitable for S1, And Ecovacs brushes don't.
• ⚠️ Avoid fakes! Unoriginal batteries can swell or damage the charging controller.

Replacement of the roller brush:

1. Turn the robot over and remove the lid of the dumpster.
2. Press the locks on the sides of the brush and remove it.
3. Install a new brush, combining the grooves with guides.
4. Close the lid before you click.

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When replacing the filter HEPA Don't wash it with water, it breaks down the fibers. Use a vacuum cleaner at minimum power or compressed air to clean it.

7 Storage and transportation: how to avoid breakdowns

If you do not use the robot daily (for example, in the country or during vacation), follow the rules of storage:

• 🔋 Battery charge: 40-60% optimal, full discharge or 100% charge reduces battery life.
• 🌡️ Temperature. Keep the robot at 15 to 25.°C. Avoid dampness (collection boards may oxidize) and direct sunlight (plastic spoils).
• 📦 Packaging. If you're transporting a robot, use the original box or wrap it in bubble wrap. Don't put heavy objects on top!

What can't be done:

• 🚫 Store the robot on the charging station for more than 2 weeks in a row (risk of overcharging).
• 🚫 Transport in a horizontal position without fixation (lidar may be damaged).
• 🚫 Leave in a dusty room without packaging (dust will get into the turbine).

If the robot has not been used for more than a month, before switching on:

1. Check the charge level (charge if necessary).
2. Clean all brushes and filters.
3. Update the firmware.

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For long-term storage (more than 3 months), remove the battery and store it separately in a cool place.

8. Frequent Questions and Answers (FAQ)