The “Check and Clean the Filter” Error in Xiaomi’s Robot Vacuum Cleaner: What to Do and How to Fix

Your Xiaomi robot vacuum cleaner suddenly stopped and a message appeared on the screen or in the Mi Home app saying, “Check and clean the filter”? This error is one of the most common in Mi Robot Vacuum, Viomi, Dreame and other brands. It can occur either from a real filter clogging, or from a sensor failure or a software error. In this article, we will analyze all possible causes and give step-by-step instructions for fixing the problem, from basic cleaning to resetting an error through the engineering menu.

It is important to understand that ignoring this error can lead to engine overheating, lower suction power or even turbine failure. L10 Pro clogged filters increase the load on the engine, which reduces the life of the engine, but it's not always the filter itself that's the problem, sometimes the airflow sensor or the density of the dust collector cover is to blame.

The article is suitable for the owners of the following models (and their analogues): Xiaomi Mi Robot Vacuum 1/2/3, Mi Robot Vacuum-Mop (P/E/2/2 Pro), Viomi V2/V3, DreameBot D9/L10/Z10 Pro, Robbok R1 And other robot vacuum cleaners on the Xiaomi platform, and if you don't have a model, don't worry: diagnostics and repairs are universal. 90% brand.

Why there is a filter error: 5 main reasons

Check and clean the filter (or similar: Filter error, Clean the filter, E10) It can happen for a variety of reasons. Here's a complete list of possible culprits, ranked by frequency:

• 🧹 Main clogging HEPA-The most obvious option is the filter, and the dust, animal hair and small debris accumulate on the grid, blocking the flow of air.
• 🔄 Incorrectly installing the filter or the dust collector, even a slight skewed cover can cause the sensor to falsely actuate.
• 🤖 Failure of the airflow sensor (occurs in models with a laser or optical sensor.
• 💻 Software glitch – the error remains in the memory of the robot even after cleaning (often happens after updating the firmware).
• 🔧 Mechanical damage to the filter or the housing, such as cracking in the plastic of the dust collector or deformation of the sealing gum.

Xiaomi Mi Robot Vacuum-Mop 2 Pro and DreameBot Z10 Pro filter error can occur because the water container is overflowing, because some firmware versions link the filtration system to the wet cleaning module, and if the robot thinks there's too much liquid in the tank, it blocks the turbine.

To determine exactly what's causing it, start with a visual inspection. Take out the dust collector and filter -- if they're clean, the problem goes deeper (sensor, firmware, or mechanics). If you see a layer of dust on the filter, start cleaning.

How to Clean the Filter: Step-by-step Instructions

If this is the first time you've had a problem, start by basic cleaning of the filter and the dust collector, and it's important to do this carefully so you don't damage the delicate elements.

1. Disconnect the vacuum cleaner from the charging station and turn it upside down.
2. Remove the dust collector: press the button (usually marked with an icon) 🗑️) And pull the container over.
3. Disconnect the filter. Most models have it on the latches, so gently squeeze the sides and pull it out.
4. Remove large debris from the vacuum cleaner manually or with a vacuum cleaner.
5. Wash the filter under running water (only if it is washable - check the instructions!). Use only cold water - hot water can warp the material.
6. Dry the filter for at least 24 hours, and using a wet filter will cause a turbine error and possibly break down!
7. Clean the airflow sensor (if you have access) and it's located next to the filter and looks like a small hole with a sensor. Use a dry cotton swab.
8. Collect everything in reverse order, making sure that the filter and dust collector are in place with a characteristic click.

Important: in Viomi models V3 and DreameBot L10 The pro filter consists of two parts - a pre-grid and HEPA-You need to clean both! And check the sealing gum on the dust collector cover, if it's worn out, replace it.

The filter is completely dry.|Dust collector is empty and clean|Airflow sensor is not contaminated|Dust collector cap is snapped to the end.|No visible damage to the filter or body-->

If you have a problem after cleaning, move to the next section, maybe the problem is in the sensor or firmware.

What to do if the filter is clean and the error does not disappear

Situation: You cleaned the filter, you assembled the vacuum cleaner, but the message "check and clean the filter" still burns, which means that the problem lies deeper. Let's look at 3 possible scenarios and how to solve them:

Failure of the air flow sensor

The sensor is responsible for controlling the air through the filter, and if it's contaminated or faulty, the robot thinks the filter is clogged, and then checks it.

• 🔍 Look at the sensor (usually located next to the filter) and it looks like a small hole with a sensor inside.
• 🧴 Carefully clean it with a dry cotton swab or compressed air (a canister for cleaning equipment).
• 🔄 Reboot the vacuum cleaner: Hold the power button for 10 seconds, then turn it on again.

2. false positive due to poor contact

Sometimes the error is due to a loose fit of the dust collector or filter cover.

• 🔧 Make sure the filter is installed before clicking (the Xiaomi Mi Robot Vacuum 3 models have an additional lock lock).
• 🔍 Check the sealing gum on the lid - it should be whole and elastic.
• 🛠️ If the rubber band is worn out, replace it (you can buy it on AliExpress or at the service center).

3. Software glitch or firmware error

If the sensor and mechanics are fine but the error persists, try resetting it software:

• 📱 Reboot the robot: press and hold the power button for 10-15 seconds.
• 🔄 Update the firmware through the Mi Home app (Settings section) → Update of the PO).
• 🛠️ Reset the error through the engineering menu (instruction below).

In DreameBot models, a filter error may appear after a firmware update, in which case a rollback to the previous version (if available) or a factory reset will help.

How to Reset Filter Error Through Engineering Menu

Attempt to reset the error via the engineering menu.This method works for most Xiaomi and Dreame models, but be careful: incorrect actions can lead to malfunctions. Here's a step-by-step guide:

For models with physical buttons (Mi Robot Vacuum 1/2, Viomi V2, etc.):

1. Turn off the robot by holding the power button for 3 seconds.
2. Press and hold the Home + Spot buttons simultaneously for 5–7 seconds until you hear a beep.
3. The robot will enter the engineering menu. The display will show -- -- or similar symbols.
4. Use the Spot button to navigate to the Error Reset or Clear Faults option (usually the 4th or 5th item).
5. Press the Home button to confirm the reset. The robot will beep and reboot.

For models with touchscreen (DreameBot L10 Pro, Mi Robot Vacuum-Mop 2 Pro, etc.):

1. Turn off the robot.
2. Press and hold the screen area with the Home and Settings icons for 10 seconds.
3. In the menu that appears, select System → Error Log → Clear All.
4. Confirm the action and restart the robot.

If the error persists even after resetting via the engineering menu, the problem is likely hardware-related (faulty sensor or motor). In this case, contact a service center.

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Before resetting errors via the engineering menu, take a photo of the original settings. This will help restore them if something goes wrong.

When to replace the filter: signs of wear and recommended models

Even with regular cleaning, the filter in a robot vacuum has a limited lifespan. For Xiaomi models, the recommended replacement interval is every 3–6 months, depending on usage intensity. Here are the main signs that the filter needs replacing:

• 🚫 The error "Check and clean the filter" appears immediately after cleaning.
• 💨 The suction power has noticeably decreased (the robot picks up debris worse).
• 👃 An unpleasant odor appears during operation (accumulated bacteria in the filter).
• 🔍 Visible damage: tears, deformation, or clogging that cannot be cleaned.

For replacement, use only original or certified compatible filters. Here’s a table of suitable models for popular robots:

Important: When buying a replacement filter, pay attention to the HEPA class. For allergy sufferers, it’s better to choose filters with HEPA H11–H13 certification — they retain up to 99.9% of allergens and fine dust.

⚠️ Warning: Never use the robot without a filter or with a damaged one! This can lead to motor overheating and voiding the warranty. In models with a water tank (like Mi Robot Vacuum-Mop 2 Pro), lack of a filter can also cause mold growth in the system.

Preventing filter errors: 5 rules for proper maintenance

To minimize the risk of the "Check and clean the filter" error, follow these simple but effective rules:

• 📅 Clean the filter every 1–2 weeks, even if the robot doesn’t show errors. Use a soft brush or vacuum cleaner with a nozzle.
• 🚿 Wash the filter no more than once a month (if it’s washable). Frequent washing reduces its service life.
• 🏠 Empty the dustbin after each cleaning cycle. A full container increases the load on the filter.
• 🌡️ Avoid operating the robot in high humidity (e.g., immediately after wet cleaning). This can lead to mold on the filter.
• 🔄 Update the firmware regularly. Manufacturers often fix bugs related to false sensor triggers in new versions.

For models with a mopping function (e.g., Xiaomi Mi Robot Vacuum-Mop P), also monitor the water tank cleanliness. Limescale and detergent residues can clog the filter indirectly by affecting the airflow system.

An interesting life hack: to extend the filter’s life, you can pre-vacuum the room with a regular vacuum cleaner before running the robot. This reduces the load on its filtration system.

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The main cause of filter errors is not just dust, but incorrect maintenance. 80% of cases are due to untimely cleaning or improper installation of the filter.

Frequently Asked Questions (FAQ)