How to reset the filter counter in the air purifier Xiaomi: a detailed guide

Xiaomi’s Mi Air Purifier series air purifiers have become an integral part of many homes, especially in urban dusty or allergic seasons. However, even the most reliable device requires periodic maintenance — and one of the key procedures is to reset the filter meter after it is replaced. Without that, the purifier will continue to signal the need to replace, even if you install a new filter element.

In this article, we will discuss how to properly reset the filter on different models of Xiaomi Air Purifier (including: 2/2S/2H, 3/3H, 4/4 Lite, Pro), what nuances it is important to consider when resetting through the Mi Home application or physical buttons on the body, and what to do if standard methods do not work.

If you are first encountering this procedure or have previously been reset with errors, save this instruction bookmarked. It will come in handy every time you change the filter to avoid unnecessary problems.

Why you need to reset the filter counter in Xiaomi Air Purifier

The filter life meter in Xiaomi’s air purifier is not just an indicator, but part of a smart control system. 6-12 months depending on the model and intensity of use) and reminds you to replace the:

• 🔴 Indicator on the body (blinks in red or orange)
• 📱 Notification in annex Mi Home/Xiaomi Home
• 📉 Decreased productivity (deterioration of air cleaning)

If you do not reset the meter after installing a new filter, the device will work in "emergency mode":

• 🚨 Constantly signaling the need for replacement
• 🔄 Automatically increase the speed of the fan, reducing the life of the motor
• 📊 Incorrect display of air quality data (due to pollution compensation algorithms)

Moreover, some models (such as the Mi Air Purifier Pro) can block access to advanced settings until the meter is reset, which is designed to protect the user from using a worn filter, but creates inconvenience if replaced correctly.

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If you use compatible third-party filters (not the original Xiaomi), resetting the meter is mandatory - otherwise the device may refuse to work at full power, considering the filter to be "worn".

Preparation for resetting: what to check before zeroing

Before starting the reset, make sure that all the prerequisites are met, which will help to avoid errors and malfunctions in the operation of the cleaner:

Install a new filter (original or compatible)

Connect the cleaner to the network 220V

Make sure the device is on and on standby.

Check your Wi-Fi connection (if you plan to reset via the app)

Update the Mi Home app to the latest version-->

Pay special attention to the type of filter. Xiaomi cleaners use:

• 🌿 HEPA-filters (main, for dust and allergens)
• 💧 Carbon filters (to absorb odors and gases)
• 🔄 Combined filters (HEPA + coal-coal)

If you have only replaced one of the filters (e.g., coal, leaving the old one) HEPA), You can't drop the meter, it'll cause the sensors to work incorrectly, and in these cases, you need to completely replace the module.

Reset the filter counter through the Mi Home app

The most reliable and recommended way to zero is to use the official Mi Home app (or Xiaomi Home for newer versions), which works for all models that support Wi-Fi connectivity.

Step-by-step procedure:

1. Open the Mi Home app and select your air purifier from the device list.
2. Go to the device menu (tap on the icon) ⚙️ or "Settings").
3. Find the Filter or Filter Status section (newer versions may call Service).
4. Slip the button Reset the counter or Reset the filter.
5. Confirm the action in the dialog window.

After a successful reset, the app will have a notification and the indicator on the cleaner case will stop flashing red. If the reset button is inactive (grey), check:

• 🔌 Connecting the device to the Wi-Fi network (without the Internet reset is impossible)
• 📶 Network signal (cleaner must be in the range of the router)
• 🔄 Device firmware version (update via Settings) → Update of the PO)

Alternative ways of zeroing (without the application)

If resetting via Mi Home is not possible (for example, due to Wi-Fi issues or outdated firmware), you can use physical buttons on the device body.This method works for most models, but may vary depending on the generation of the cleaner.

For Mi Air Purifier models 2/2S/2H:

1. Turn off the cleaner with the power button.
2. Press the Mode button and hold it.
3. Without releasing the Mode, turn on the device with the power button.
4. Hold both buttons. 10-15 seconds until you hear a beep (beeping) and see the indicator blinking.
5. Release the buttons - the filter counter is zeroed.

For Mi Air Purifier models 3/3H/4/Pro:

1. Turn off the device.
2. Press the Reset button or the Power combination + Regime.
3. Hold on. 5-7 seconds until the indicator starts flashing yellow.
4. Release the buttons, reset complete.

If the combination does not work, check:

• 🔋 Charge level (for models with a battery, for example, Mi Air Purifier) 2C)
• 🔌 Network connection (some models block reset when battery power is running)
• 📖 Firmware version (newer versions may require longer buttons to be held)

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Physical reset via buttons not only resets the filter counter, but also other settings (such as timers or user modes) after the procedure, you may need to reconfigure the device.

Common Mistakes and How to Avoid Them

Even when following the instructions, users often encounter problems, and here are the most common mistakes and ways to solve them:

Pay special attention to filter compatibility: Non-original filters (even with similar characteristics) may not be correctly recognized by the purifier sensors, as a result of:

• 📉 The device shows an inflated level of pollution
• 🔊 False notifications about filter replacement appear
• 🚫 Some functions (such as automatic mode) are turned off

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Before buying a non-original filter, check its certification. The package must have a compatibility mark with your Xiaomi model (for example, "Compatible with Mi Air Purifier") 3H").

Update firmware to correct reset errors

If standard reset methods don’t work, the problem may lie in the device’s outdated firmware. Xiaomi regularly releases updates to fix filter counter bugs, especially for the Mi Air Purifier 2 and 3 models.

To update the firmware:

1. Open your Mi Home and select your cleaner.
2. Go to Settings. → Update of the PO.
3. If a new version is available, click Update.
4. Wait until the process is complete (don’t disconnect the device from the network!).

If the update through the application is not available, you can install the firmware manually:

1. Download the latest firmware for your model from the official Xiaomi website or forums (for example, miui.su).
2. Unpack the archive and copy the.pkg file to the formatted flash drive (FAT32).
3. Put the flash drive in. USB-The port of the cleaner (if any) or use it OTG-adapter.
4. Press the Power button for 10 seconds - the device will automatically find and install the firmware.

Important: Continuous power during firmware is critical! If the process is interrupted, the cleaner may stop turning on. Use a Uninterruptible Power Supply (UPS) if there are power outages in your area.

What to do if nothing helps: radical methods

In rare cases, standard reset methods fail due to software failures or hardware constraints. If you've exhausted all options, try:

1.Reset to factory settings

This will remove all user settings, but often solves the counter problems:

1. Turn off the cleaner.
2. Press the power button on 15-20 seconds.
3. After the double beep, release the button.
4. The device will reboot with factory parameters.

2 Manual editing of settings via Mi Home API

For advanced users: you can manually send a reset command through API Mi Home, you'll need it:

• 🖥️ Computer with Python installed and Python-miio library
• 📜 Token of your device (can be obtained through the Mi Home app or package scanner)

Example of a filter reset command (starts at the terminal):

miio --ip 192.168.1.100 --token YOUR_TOKEN_HERE airpurifier reset_filter

Replace. 192.168.1.100 on IP-the address of your cleaner, and YOUR_TOKEN_HERE — real-token.

3. Contact Xiaomi Support

If none of these methods work, contact official support:

• 📧 By mail: support@xiaomi.com
• 💬 Through chat in the Mi Home app (section "Help")
• 📞 By telephone (for Russia: 8 800 700 02 03)

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Before contacting in support, prepare: a cleaner model, a firmware version (you can find out in Mi Home), a photo / video problem and a purchase check (if the device is warranty).

FAQ: Frequent questions about filter reset in Xiaomi Air Purifier