How to do if Mi Air Purifier indicator light is not on?

Solutions
Check whether all the indicator lights are not on or whether the single indicator lights are not on. Check by switching the mode and turning the machine on and off.
When the single indicator light is not on, if it can be confirmed as indicator light failure or bad internal contact, apply for after-sales service.
When all the indicators are not on, first check whether they can be turned on and confirm that the power connection is normal. If the purifier can be used normally and the indicator switch is turned on, apply for after-sales service.