We ask that you hold the filter button down for 10-15 seconds to rest the filtration setting. This should solve your issue. If not , please follow steps below:
Check if you can feel any suction around the filter and filter housing unit and the water is flowing freely.
After cleaning leave the filter out for 2 minutes and then reset the heater unit by pressing the filter button down for 10 seconds.
Ensure the water is between the minimum and maximum levels.