Hi, if the indicator light is still blinking after replacing the filters, you need to reset the air purifier.
If your purchased air purifier is AirMic 4S/ Apollo 718/ Cayman 608 Air Purifier, please press the button of "filter reset indicator" for 3 seconds (not 3 times).
If your purchased air purifier is AirMax8L Air Purifier, please press the "sleep mode" button for 3 seconds.
If your purchased air purifier is AirMax10L Air Purifier, please press the "Filter reset" button for 3 seconds.
If your purchased air purifier is Apollo 818 Air Purifier, please press the "Filter reset" button for 5 seconds.
If your purchased air purifier is Pega100 Air Purifier, please press the "On/ off" button until the buzzer beeps.
If the problem is still not solved after such operation, please feel free to contact us here-support@okaysou.com.