Mill Silent Pro Compact air purifier (Model: APSILENTCO) Turn off deviceTurn device onPress and hold Fan speed/Mode button for 20 secondsOnce 20 seconds have passed release button and hard reset will initiateAll icons blinks 3 times.Related ArticlesReset Mill Silent Pro?What do the lights and symbols on the control panel mean?What are the differences between the Silent Pro and Silent Pro Compact air purifiers?I have changed my network at home. How do I reconnect my devices?Mill Silent Pro Air Purifier - English EU user manual