Explanation:
1. Check whether a time switch or an intelligent scene has been set:
① Timing switch machine: MI Home APP page - > purifier - > upper right corner - > device Settings - > timing switch machine;(reset WiFi to clear timing Settings)
② Intelligent scene setting: Mi Home app-> Intelligent,
Turn off the time or delete the scene to see if there will be a similar situation;
2. Check whether the power supply of the air purifier is normal, whether the voltage is stable, and whether the power line connection is plugged in.
3. Check whether the learning mode is on. The learning mode will automatically learn previous operations, such as turning off the purifier at a certain time.