Xiaomi Air Purifiers are popular for their affordability, smart controls, and efficient filtration. But like any appliance, they may develop issues over time. This guide lists the most common Xiaomi Air Purifier problems, the exact causes, and step-by-step solutions so consumers can easily fix them at home.
1. Xiaomi Air Purifier Not Turning On
Possible Causes
- Loose or faulty power connection
- Damaged adapter
- Tripped power socket
- Internal power board issue
Solutions
- Check the power cord and ensure it’s firmly connected.
- Try using another wall socket.
- Test with a different adapter (original recommended).
- If it still does not turn on, the internal board may be damaged — contact Xiaomi service.
2. Airflow Is Weak or No Air Coming Out
Causes
- Clogged HEPA or activated carbon filter
- Filter installed incorrectly
- Blocked air inlet/outlet
- Fan motor issue
Solutions
- Remove the filter and check for dust clogging; replace if needed.
- Reinsert the filter properly until it “clicks.”
- Clean the air vents around the purifier.
- If airflow is still weak, the fan motor may require service.
3. Xiaomi Air Purifier Showing “Filter Expired” Even After Replacing
Causes
- Filter reset not performed
- Non-original filter not recognized
- Software bug
Solutions
- Open the Mi Home app → Device Settings → Reset Filter.
- Ensure you are using an original Xiaomi filter.
- Update the purifier firmware through the Mi Home app.
4. High PM2.5 Reading Despite Running for Hours
Causes
- Dirty or clogged sensors
- Serious indoor pollution source
- Windows/doors open
- Filter nearing end of life
Solutions
- Open the purifier back panel → Clean the laser dust sensor with a cotton swab.
- Close windows and isolate pollution sources like incense or smoke.
- Replace the filter and reset it.
- Try switching to Auto or High mode for faster cleaning.
5. Xiaomi Air Purifier Making Loud Noise
Causes
- Fan dust buildup
- Loose internal screws
- Filter not seated properly
- Turbo mode running at high speed
- Motor wear
Solutions
- Remove the filter → Blow out dust with a blower/vacuum.
- Check for loose parts inside the filter chamber.
- Reinstall the filter tightly.
- Set it to Sleep Mode to test if the noise reduces.
- Persistent noise = service center needed.
6. Bad Smell or Odor Coming From the Xiaomi Air Purifier
Causes
- Old filter capturing smoke or oily particles
- Mold growth due to moisture
- VOCs absorbed into the filter
- Room humidity too high
Solutions
- Replace the filter immediately.
- Keep the purifier in a dry environment.
- Clean the pre-filter with a dry cloth.
- Avoid exposure to kitchen fumes or incense directly.
7. Xiaomi Air Purifier Not Connecting to WiFi / Mi Home App
Causes
- Wrong WiFi band (2.4GHz required)
- Router too far or weak signal
- App version outdated
- Incorrect region selected in the Mi Home app
Solutions
- Ensure your router is set to 2.4GHz.
- Bring the purifier closer to the router.
- Update Mi Home app.
- Set region to India / China (based on your model).
- Reset WiFi: Hold the power + mode button for 5 seconds.
8. Xiaomi Air Purifier Touch Buttons Not Responding
Causes
- Child lock enabled
- Firmware glitch
- Moisture on panel
- Hardware fault
Solutions
- Disable Child Lock from the Mi Home app.
- Clean the touch panel gently.
- Restart the purifier.
- Update firmware.
- If unresponsive, touch panel replacement may be needed.
9. Xiaomi Air Purifier Auto Mode Not Working Properly
Causes
- Dirty dust sensor
- Firmware issues
- Sensor location blocked by furniture
Solutions
- Clean the laser sensor.
- Move the purifier away from walls, curtains, or corners.
- Update firmware.
10. Xiaomi Air Purifier Purifier Vibrates or Shakes
Causes
- Uneven floor surface
- Filter loose
- Fan imbalance due to dust
Solutions
- Place the device on a flat, solid surface.
- Reinstall the filter tightly.
- Clean the fan compartment.
11. Xiaomi Air Purifier Filter Life Drops Too Fast
Causes
- High-pollution area
- Smoke, incense, or kitchen fumes nearby
- Running on high speed continuously
Solutions
- Keep windows closed while running.
- Avoid placing it near the kitchen.
- Use Auto mode instead of Turbo for daily use.
12. Xiaomi Air Purifier Blowing Dust Back Into Room
Causes
- Filter installed incorrectly
- Counterfeit/poor-quality filter
- Filter seal damaged
Solutions
- Reinstall the filter properly.
- Use only original Xiaomi replacement filters.
- Replace filter seals if needed.
13. Xiaomi Air Purifier Turns Off Automatically
Causes
- Overheating
- Power fluctuations
- Timer scheduled in the app
Solutions
- Clean air vents for proper airflow.
- Plug into a stable power socket.
- Check the Mi Home app → Schedule settings.
Check out Honeywell Air Purifier
Final Advice
If your Xiaomi Air Purifier continues to show issues even after these steps, consider:
- Replacing the filter
- Updating to the latest firmware
- Contacting Xiaomi Support for hardware problems