Xiaomi Robot Vacuum S40 Pro FAQ

1. Dust compartment capacity is 400 ml, and the water tank capacity is 290 ml;
2. Equipped with a 5200 mAh battery, it supports up to 120 minutes of operation in standard vacuuming and mopping mode, meeting daily cleaning needs;
3. Features a powerful fan with up to 15 kPa suction and App control with selectable modes: Silent, Standard, Strong, and Turbo. The stronger suction ensures a more thorough clean;
4. Uses LDS laser navigation with single-line laser and collision sensors for intelligent obstacle avoidance. Enhanced edge detection improves corner and edge cleaning, while carpet recognition enables automatic adjustment of cleaning modes.

1. Press and hold the Power button for 3 seconds to turn it on, the indicator will turn on;
2. When the robot vacuum is not charging and is paused, press and hold the Power button for 3 seconds to turn it off.

1. When the robot vacuum is cleaning, press the Power button to pause the cleaning;
2. Press the button again to resume cleaning.

1. The robot vacuum cannot be powered off while charging;
2. When the robot vacuum is running, press any button on the robot vacuum to

1. Press to start docking when it is paused;
2. Press to pause while running;
3. Press to start docking when it is paused;
4. Press to stop docking when it returns to the charging dock;
5. Press and hold for 3 seconds to enable or disable the child lock.

1. White: Working normally;
2. Breathing white: Charging (medium/high battery level);
3. Blinking white: Docking/Updating firmware/Restoring factory settings;
4. Orange: Network disconnected;
5. Breathing orange: Charging (low battery level);
6. Blinking orange: Robot vacuum error;
7. Blue for 2 seconds: Network connected;
8. Breathing blue: Connecting to the network;
9. Blinking blue: Resetting Wi-Fi/Awaiting network connection.

1. On the robot vacuum’s housing are the Laser Sensor, Bumper, and Structured Light Obstacle Sensor;
2. On the underside are the Side Brush, Cliff Sensors, Ultrasonic Carpet Recognition Sensor, Caster Wheel, Charging Contacts, Battery, Brush, Brush Cover, Main Wheel and Mop Pad Assembly;
3. Under the top cover are the Dust Compartment and Reset Button;
4. At the side are Edge Sensor and the Water Tank;
5. On the Charging Dock are Charging Contacts;
6. On the Dust Compartment are the Dust Compartment Release Button, Dust Compartment Filter, and Filter Clip;
7. On the Mop Pad and Water Tank Assembly are the Water Tank Lid and Water Tank Release Button.

1. Do not expose the charging dock to direct sunlight;
2. Do not place any objects within 0.5 meters on either side of the charging dock and 1.5 meters in front of it.

1. For first-time use, please follow the instructions to properly place the charging dock. Manually align the robot vacuum with the charging dock so that the charging contacts are correctly connected;
2. Allow the robot vacuum to fully charge before starting cleaning and mapping, or use Quick Mapping after a full charge;
3. It takes approximately 3 to 6 hours to charge from 0% to 100%.

1. For new device, remove the protective foam from the bumper before use;
2. For the first use, it is recommended to tidy up the floor to avoid entanglement or obstruction;
3. Prioritize mapping the home environment. After mapping, add map settings, including virtual walls and other assisted features, before starting regular use.

1. Install the charging dock in an open area with a good Wi-Fi signal;
2. Place the charging dock against the wall and connect it to power;
3. Place the robot vacuum on the charging dock before first use. It will begin charging automatically;
4. When fully charged, the indicator on the main unit will stay on for 10 seconds and then go out.

1. To ensure the battery's optimal performance, fully charge the battery for the first time before use;
2. If the battery is too low, the device can not power on. Place it on the charging dock to charge;
3. The robot vacuum powers on automatically when connected to the charging dock and cannot be turned off during charging.

1. Press and hold the water tank release button to remove the water tank. Open its lid, and fill it with clean water;
2. Insert the filled water tank into the robot vacuum. It is properly installed when a “click” is heard.

1. Do not fill the clean water tank with hot water, as it can cause deformation;
2. When mopping, please set virtual walls or restricted zones in areas like the kitchen or bathroom;
3. Do not use cleaning agents, disinfectants, or solid cleaners, as they can corrode or damage the device;
4. In areas with standing water, remove the water before using the sweeping or mopping functions.
5. After mopping is complete, remove and wash the mop pad promptly, then allow it to air dry. Do not leave water in the tank when not in use, to avoid unpleasant odors or mold growth.

1. Before cleaning, make sure the robot vacuum is fully charged and starts from the charging dock. Do not move the charging dock during cleaning;
2. If the battery is too low to start cleaning, charge the robot vacuum first before starting the task.

1. Turn the robot over and press both release buttons to remove the main brush cover;
2. Lift out the main brush;
3. Reinstall the main brush and the cover, making sure the cover is pressed down firmly and secured in place.

1. Open the cover of the robot vacuum, and press the dust compartment release button to remove the dust compartment upward from the robot vacuum;
2. Open the dust compartment cover and empty the debris;
3. Rinse the dust compartment and filter with clean water if needed;
4. Fully dry the dust compartment and filter before reinstalling them.

1. Do not attempt to clean the filter with a brush or fingers;
2. Frequent rinse is not recommended, otherwise the filter can be damaged;
3. Only use clean water to clean the dust compartment and filter. Do not use detergent.

1. Turn the robot vacuum upside down and pull out the caster wheel upwards;
2. Clean any hair or debris that can have gotten stuck on the caster wheel;
3. Reinstall the caster wheel.

1. Turn the robot over and pull the side brush upward to remove it;
2. Clean any hair and dirt from the side brush;
3. To remove the side brush, pull it straight up. When reinstalling, align it properly and press down until you hear a click to ensure it is securely in place.

1. Remove the mop pad holder, then peel off the mop pad from the edges;
2. To attach a new mop pad, simply align it with the velcro and press it down.

1. While charging: lights turn off after 1 minute;
2. While working: lights behave normally;
3. While in standby: lights behave normally;
4. After 10 minutes of inactivity: enters sleep mode

1. For first-time use, follow the instructions in the app to select either Quick Mapping or Start cleanup. Once completed, the App will automatically save the map;
2. When using the robot vacuum in a new environment (e.g., a different floor), go to the Xiaomi Home App >> tap the three dots icon at the upper right corner >> [Map list] >> tap [Create a new map] to build a new one. You can differentiate maps by assigning unique names to each environment.

1. Start the mapping process from the charging dock, do not move the dock during mapping;
2. Once the robot vacuum returns to the charging dock automatically, the new map will be saved. Do not interrupt or move the robot vacuum during this process;
3. The presence of highly reflective objects such as mirrors, windows, or shiny metal surfaces can affect mapping accuracy.

1. The Xiaomi Robot Vacuum S40 Pro comes with a 5200 mAh battery and is pre-charged to approximately 30% at the factory. It is recommended to fully charge the robot vacuum before its first use;
2. Fill the water tank with water, secure the rubber stopper tightly, and wipe off any water on the surface;
3. Connect the robot vacuum to the Xiaomi Home App and Wi-Fi network, then place the robot vacuum on the charging dock to begin cleaning.

1. The Xiaomi Robot Vacuum S40 Pro is equipped with a 5200 mAh battery for long endurance;
2. If the battery is low during mopping, the robot vacuum will return to the charging dock to recharge. Once the battery reaches over 80%, it will resume the unfinished task from where it left off.

1. Download and install the Xiaomi Home App. If you have already installed the App, it will take you directly to the device connection interface. Alternatively, you can search for "Xiaomi Home" in the App Store/Google Play Store to download and install it;
2. Open the home interface of the Xiaomi Home App, tap the [+] icon at the top right corner of the screen, and follow the on-screen instructions to add the Xiaomi Robot Vacuum S40 Pro.

1. Due to updates to the Xiaomi Home App, actual operations can differ slightly from the descriptions above. Please refer to the current instructions within the App for accurate guidance;
2. Only 2.4 GHz Wi-Fi networks are supported;
3. When the robot vacuum connects with the Xiaomi Home App successfully, it connects with the network successfully. You can reset Wi-Fi to disconnect it from the network.

1. Check whether the Wi-Fi password is correct;
2. The robot vacuum does not support the 5 GHz network frequency band, please connect it to a 2.4 GHz network;
3. There is something wrong with the Wi-Fi connection. Reset the Wi-Fi and download the latest version of the Xiaomi Home App, then try reconnecting;
4. Ensure the robot vacuum is in an area with good Wi-Fi coverage, then reset its Wi-Fi and reconnect it to the network.

1. A saved map is required before using this feature;
2. Moving the robot vacuum or major changes in home layout can invalidate the existing map and remove no-go zones.

1. Please check whether the charging dock is properly powered and whether the charging contacts on the robot and the charging dock are dirty. If they are dirty, charging issues could occur. Please clean the contacts and try again;
2. Check whether the power cable is properly plugged in.

1. Check whether the main brush is tangled with debris, which can cause unusual noise. Clean it promptly to avoid damage;
2. To ensure better cleaning performance, the robot vacuum uses a high-power fan for stronger suction, which can produce more noise. You can switch to the silent mode for lower noise levels.

1. The battery can be depleted. Please place the robot vacuum on the charging dock to recharge;
2. If the ambient temperature is too low (below 0 ℃) or too high (above 50 ℃), use the robot vacuum in a 0–50 ℃ environment;
3. Make sure the charging dock is powered, the charging contacts are clean and free of oxidation, and the dock is not damaged or sunken;
4. If it still fails to power on after charging, please contact the after-sales service center for assistance.

1. If the robot vacuum cannot charge, unplug the charging dock and wait 1–2 minutes. Then plug it back in, turn off the robot vacuum, and place it back on the charging dock to check if it can charge. If the robot vacuum indicates that it is charging, wait 2-3 hours and check whether it charges properly;
2. If the charging dock is not powered, check whether the power cable is properly plugged in. If there is poor contact, clean the spring-loaded charging contacts on the dock and the charging contacts on the robot vacuum. Remove any obstacles in front of the charging dock.

1. There can be too many obstacles around the charging dock. Please place it in an open area, ensuring at least 0.5 meters on both sides and 1.5 meters in front are clear of obstacles;
2. The robot vacuum did not start cleaning from the charging dock, so it can fail to locate it afterward. Try to start cleaning from the charging dock whenever possible;
3. The robot vacuum was moved during cleaning. In such cases, it can fail to reposition itself. Please place it back on the charging dock before starting a new task.

1. If the floor is very dirty, clean or replace the mop pad promptly;
2. During the initial cleaning phase (when the floor is especially dusty), it’s recommended to vacuum first and mop afterward. After vacuuming, clean the side brush before starting to mop;
3. Regularly clean the side brush to prevent dirt buildup from affecting mopping performance.

1. Confirm that the map has been successfully saved (you can see partitioned areas on the map and be able to use zone cleaning);
2. Turn off the power switch and restart the robot vacuum. Then manually place it back on the charging dock to try restoring the map. If map restoration fails, relocate the charging dock and create a new map.

1. Place the charging dock against a wall, ensuring at least 0.5 meters on both sides and 1.5 meters in front are free from obstacles;
2. During cleaning, avoid moving or interfering with the robot vacuum manually;
3. Strong direct light or mirror reflections in the home can cause mapping errors:

3. Regularly check the sides of the navigation sensor for dust and wipe clean with a dry cloth or tissue if needed.

1. Check whether the drive wheels are tangled with foreign objects;
2. Ensure the LDS (laser distance sensor) is rotating properly. Gently press on the LDS cover to check whether it rebounds properly;
3. Inspect the LDS for any debris or hair that can be obstructing its movement. Remove them if found;
4. Check the bumper and the surface of the robot vacuum for irregular stickers or large objects that may interfere;
5. Tap the bumper to ensure it can bounce back properly;
6. Try restarting the robot vacuum and test again.

1. Tap the bumper to confirm that it can bounce back properly
2. Check if the wheels are slipping or tangled with foreign objects. Move the robot vacuum to a new surface and try again.

1. Remove the side brush and check for any foreign objects or hair entangled in the brush or its components;
2. Try restarting the robot vacuum and see if the issue is resolved.

1. The Wi-Fi signal is weak. Make sure the robot vacuum is within a strong signal coverage area
2. The Wi-Fi connection error, try resetting the Wi-Fi, updating to the latest version of the app, or reconnecting with a different phone;
3. Make sure the robot vacuum is powered on. If it’s off, it will show as offline;
4. Use a pointed object to press and hold the reset button for 3 seconds until you hear “System reset successful”, then reconnect the network and update the firmware.

1. Make sure clean water is added to the water tank
2. Confirm that the water tank is installed correctly;
3. Check that the outlet on the bottom of the water tank is not blocked;
4. Restart the robot vacuum and try again.