Cleaned the filter in the tank at the end of the tube? Mine does the exact same thing without the blinking light, but I know what the issue is. I don't have the right remote for it. Some of their machines are very specific about the remote they will use. The remote I have does not allow me to control anything on the unit, but does allow it to work on a constant cycle as you describe, which happens to be pretty close to what I want so I'm not sweating it. Might not be your issue, but it's something to look into.