Xiaomi’s modern air purification systems are famous for their autonomy and accuracy, but even the smartest gadget requires periodic maintenance. When the supply replacement indicator lights up or the application shows critical wear, the user needs to know how to properly perform the reset. Ignoring this action will lead to incorrect sensors and false notifications, even if you have already installed a new cartridge.
The process of zeroing the resource counter is not complicated, but it has its own nuances depending on the specific model of the device. In some cases, it is enough to press a button on the case, in others it requires interaction through a mobile application. Understanding these differences will help you avoid errors and prolong the life of the equipment.
In this article, we will take a look at all the known ways to reset a timer, explain the difference between a physical replacement and a software zero, and answer questions about filter compatibility, explain why a system may require replacement ahead of time and how to make the device work normally after maintenance.
Types of indicators and replacement signals
The first thing that an Air Purifier cleaner owner encounters is a flashing orange or red light, and the air quality monitoring system analyzes the flow and resistance of the cartridge, signaling that intervention is needed, and it's important to distinguish between signals, as they indicate different stages of wear.
The orange glow usually warns that the resource is HEPA-The filter is coming to an end, but the device can still operate normally. The red flashing light is a critical warning that needs to be replaced immediately, as cleaning efficiency is reduced to a minimum. Ignoring the red indicator can lead to overloading of the engine.
⚠️ Warning: Do not try to reset the indicator without replacing the physically contaminated cartridge.This will lead to the circulation of dust and bacteria throughout the room, negating all the benefits of the device.
In display models such as the Xiaomi Air Purifier 3H or Pro H, information is displayed in more detail, where the cartridge icon can burn or the percentage of remaining resource can be displayed. Digital display allows you to plan the purchase of consumables in advance, without waiting for an emergency blink.
Preparation for replacement of consumables
Before you start a software reset, you need to provide physical access to the internal compartment of the device. Preparation procedure is the same for most models of the Mijia line. First, disconnect the device from the power grid to avoid accidental switching on during manipulation.
Then you take the back cover off, and depending on the design, it can open as a door or be removed completely by going up, and inside you'll see a cylindrical block, which is the main filter element, and carefully pull the tongue or handle to extract the old cartridge.
- 📦 Make sure the new filter is fully unpacked and the protective plastic film removed.
- 🧹 Wipe the inner surface of the case from accumulated dust with a dry cloth before installing a new unit.
- 🔌 Check the integrity of the laser air analysis sensor located inside the enclosure.
The new element must be installed strictly on the guides. If the cartridge is crooked, the lid may not close until the end, and the device will give an error of leakage. Once the lid is closed, you can connect the power and proceed to the discharge procedure.
☑️ Checklist before reset
Method 1: Reset through a button on the body
The most common method, which works on most models, including the Xiaomi Air Purifier 2, 2S and 3, involves using a physical control button, usually an on/off button or a separate mode select key. The algorithm is simple, but requires accuracy in timing.
After switching on the device and installing a new filter, press and hold the light button or the on button for 6 seconds. Some modifications require simultaneous pressing of two buttons (for example, speed and night mode). Successful reset is confirmed by a characteristic audible signal and changing the color of the indicator to green or white.
Button reset algorithm:
1. Turn on the cleaner.
2Press and hold the "Light" (or "Power") button. 5-7 seconds.
3. Wait for the sound squeak.
4. Release the button.If you don't work the first time, try repeating the procedure by increasing the retention time to 10 seconds. Mechanical buttons can have a little backlash, so it's important to press clearly and confidently. In models without a screen, this is the main method.
💡
If the button does not respond, try resetting immediately after power is turned on, in the first 30 seconds of the device.
Method 2: Reset the timer in the Mi Home app
For smartphone owners, the most convenient and informative way is to use the Mi Home ecosystem. This method allows not only to reset the meter, but also to accurately calibrate the resource for a specific type of installed filter (original or compatible).
Open the app on your phone, making sure your smartphone is connected to the same Wi-Fi network as the cleaner. Go to the device card. In the control interface, find a section with settings or filter information, and it will display the current percentage of the resource.
Click on the filter icon or the menu item "Filter Settings." In the window that opens, select "Reset" or "Replaced." The system will request confirmation of action. Once confirmed, the timer will reset, and a new countdown in hours or percentages will begin on the smartphone screen.
- 📱 Make sure the cleaner firmware is updated to the latest version for the menu to work properly.
- 🌐 When reset via the Internet, the replacement time data can be synchronized with the server.
- ⚙️ In the application, you can select the type of filter installed for a more accurate calculation of the residual period.
The advantage of digital is that you can see accurate statistics, and the app will show you how many hours the previous cartridge worked, which is useful for analyzing the air quality in your home.
Comparison of models and filter compatibility
Different generations of Xiaomi cleaners can use cartridges of different sizes and configurations, and it is important to understand which type of consumable is right for your device, as installing an inappropriate filter can lead to sensor errors and the inability to properly reset.
Below is a table of compatibility of popular models and filter types so you can make sure you choose the right one before the replacement procedure.
| Cleaner model | Type of compatible filter | Indicative resource | Feature of discharge |
|---|---|---|---|
| Air Purifier 2 / 2S / 2C | Standard Filter (Green/Blue) | 6-12 months | Light button (6 seconds) |
| Air Purifier 3 / 3C / 3H | 360° Filter (Cylindrical) | 6-12 months | Through Mi Home / Button |
| Air Purifier Pro / Pro H | Pro Filter (Large) | 12-14 months | Double-pushing of buttons |
| Air Purifier 4 / 4 Pro | 4 Series Filter | 6-12 months | Automatic recognition (NFC) |
It is worth noting that new models, such as the Air Purifier 4 series, are equipped with NFC chips. When installing the original filter, the device can read the tag and automatically prompt to reset the timer. For compatible counterparts without a chip, you will have to use a manual reset via the application.
Can you use non-original filters?
Frequent problems and ways to solve them
Sometimes users are faced with a situation where standard methods do not work, the indicator continues to burn, or the application writes a connection error, most often the problem lies in the loose fit of the cover or contamination of the sensor contacts.
Check if the back panel is tightly closed, the security sensor (magnet or mechanical switch) must be activated, if the lid is skewed, the circuit does not close, and the device thinks that the filter is not installed, and it is also worthwhile to wipe the contacts inside the compartment with a dry cotton swab.
⚠️ Warning: If the dust or burn smell persists after changing the filter and resetting the timer, stop using immediately.Perhaps the new cartridge is defective or damaged during transportation.
In rare cases, a complete reset to factory settings is required, usually by pressing the on button and the mode button for 10-15 seconds at the same time, which will return all Wi-Fi settings and schedules to their original values, but often helps to correct the software bugs of the counter.
💡
90% of reset problems are solved by re-installing the lid before a characteristic click or reconnecting the power.