Problem Explanation：
Mi Air Purifier will automatically calculate the life of the filter based on the air quality of the operating environment, operating mode, operating speed and time of the purifier.If the air quality of the purifier is poor, then the filter life will be short, the filter life is about 3 ~ 6 months;If the air quality is good, the filter life is relatively long, the filter life is about 6 ~ 12 months.If the filter cartridge life is less than 10%, it will remind the user on the display screen and APP. If it reaches the recommended life, please replace the filter cartridge in time.
Note:
The filter element containing activated carbon in the adsorption of harmful gas to reach saturation state, may appear peculiar smell, in order to improve the activated carbon activity, restore part of the adsorption capacity,it is recommended to put the filter in the light and ventilation good place for a certain time.