Reset filter in the air cleaner Xiaomi: full instructions with photos and videos

Xiaomi air purifiers are some of the most popular devices for keeping the air clean in the house, but many users face false warnings about changing the filter. Even after installing a new cartridge, the device continues to signal the need for replacement. The reason lies in the electronic resource meter, which does not reset automatically. In this article, we will discuss how to properly reset the filter on different models of the Mi Air Purifier, avoid errors and prolong the life of the device.

Resetting the meter is a procedure that the manufacturer has deliberately made it difficult for users to ignore replacing the filters. However, in some cases (for example, when buying a used device or after deep cleaning the filter), zeroing is necessary. We will look at official and alternative methods, including hidden button combinations and operation through the Mi Home application.

If your Xiaomi air purifier is persistently flashing a red indicator, despite the new filter installed, do not rush to carry it to the service. In 90% of cases, the problem is solved software - the main thing is to know the sequence of actions and nuances for a particular model.

Which Xiaomi models support filter reset?

Not all Xiaomi air purifiers allow you to manually reset the filter counter, a feature available for most popular models, but the ways to activate it differ. Below is a compatibility table with the reset methods:

If your model is not in the table, check the documentation or try the universal method (described in the next section). Devices older than 2018 (e.g. Mi Air Purifier 1) may not support reset at all - in which case only a replacement control board will help.

Important: On some firmware, after updating through Mi Home, the filter reset point disappears. This is a bug that is solved by reconnecting the device to the application.

Official method: reset via the Mi Home app

The most reliable and recommended method by the manufacturer is the use of the Mi Home app, which works on most modern models (Mi Air Purifier). 3/4, Pro, Smartmi P1) Minimizes the risk of errors.

Step instructions:

1. Open the Mi Home app and select your air purifier.
2. Go to the Device Settings → Service → Filter reset.
3. Confirm the action (it may be necessary to enter) PIN-code from Xiaomi account).
4. Wait for the device to restart (the indicator flashes blue).

If the item "Filter reset" is not:

• 🔄 Update the Mi Home app to the latest version.
• 📱 Reconnect the device to the app (remove and add again).
• 🌐 Check the region in your account settings (should match the region of your cleaner purchase).

On the Mi Air Purifier models 3H and Pro H after resetting through Mi Home counter is reset not immediately, but through 10-15 minutes of continuous operation. Do not turn off the device during this period!

Hardware reset: button combinations for different models

If the Mi Home app doesn't work or the device isn't connected to Wi-Fi, you can use hidden button combinations, which works even on older firmware, but requires accuracy.

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

For Mi Air Purifier Pro/Pro H:

For Mi Air Purifier 3/3H/4:

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Warning: Some devices reset all settings after a hardware reset, including a Wi-Fi connection. Prepare to reset the cleaner.

What to do if the reset does not work?

If none of these methods worked, the problem could be firmware, hardware failure, or manufacturer lockdown.

1.The device does not respond to buttons

• 🔋 Check the power – connect the cleaner to another source.
• 🔌 Try another outlet (overvoltage protection may fail).
• 🛠️ Disassemble the case and check the button contacts (a common problem after wet cleaning).

2. The reset is triggered, but the counter is not reset.

3.Mi Home doesn't have a "Filter Reset" item.

• 🌍 Change your account region to “China” (in profile settings).
• 📲 Install an alternative app like Aqara Home (works with some models).
• 🖥️ Use the web version of Mi Home on PC – sometimes there are more features.

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Note: On Mi Air Purifier 4 Pro models with firmware below 1.4.5, a hardware reset may result in sensor calibration loss. PM2.5.

Hidden functions and alternative methods

If standard methods don’t work, you can take advantage of Xiaomi’s undocumented cleaners, which require caution but sometimes save you in desperate situations.

1.Dumping through the engineering menu

On some models (Pro H, 3H) There's a hidden diagnostic menu to get into:

1. Turn off the device.
2. Hold on to Wi-Fi and press Power three times.
3. Release the buttons when the indicator starts flashing blue.
4. In the engineering menu, select Filter Reset (Switching Power button, confirmation – Wi-Fi).

2. Use of third-party firmware

For advanced users, it is possible to flash the cleaner with alternative firmware (for example, OpenAir).

• 🔓 Unlock all hidden settings.
• 📊 Get Extended Statistics on Filters.
• 🔄 Reset the meter without restrictions.

⚠️ Risks: Loss of warranty, possible failure of sensors.

3. Deception of the counter with a magnet

In the forums, there are tips for tricking the Hall sensor (which tracks the fan's rotation) with a neodymium magnet. This method only works on older models (Mi Air Purifier). 1/2) It can cause the engine to overheat.

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If you often clean the filter instead of replacing it, increase its resource in the Mi Home settings. → Mode of work → Setting up the filter and select the "Coal" type + HEPA" — It'll drop the meter. 6-12 months.

How often should the filter be removed and when is it harmful?

The manufacturer recommends replacing the filter every time. 6-12 months, but in practice the time limit depends on:

• 🏡 Areas and air pollution levels.
• 🕒 Intensity of use (round the clock or periodically).
• 🌿 The presence of pets smoking in the room.

Resetting the counter is justified in the following cases:

• ✅ You bought a used cleaner with a new filter.
• ✅ Made a deep cleaning of the filter (washing, vacuum cleaner).
• ✅ Install a non-original filter with similar characteristics.

When dumping is harmful:

• ❌ The filter has really run out of resources (visually dirty, deformed).
• ❌ You use a cleaner in a highly polluted room (construction, workshop).
• ❌ Sensor. PM2.5 It shows constantly high values even at maximum speed.

- Reduced cleaning efficiency by 70-90%.

Increased load on the engine (risk of overheating).

- Development of mold inside the body.-->

Video instructions and additional materials

For clarity, we recommend watching a video with a step-by-step filter reset on popular models:

🎥 Mi Air Purifier 2/2S:

Video: “Reset filter on Xiaomi Mi Air Purifier 2 in 30 seconds” (link to YouTube).

🎥 Mi Air Purifier 3H/Pro H:

Video: "How to reset the filter counter through Mi Home and buttons."

📄 Documentation:

• 📑 Official Xiaomi Guide (in English).
• 📑 The subject is 4PDA non-standard.

FAQ: Frequent questions about filter reset in Xiaomi