Chosen Solution
Used to work great. Usually cleaned up fine. Now red clean light comes on every time. I have cleaned it up better than new, no luck. Ionic PRO Turbo air cleaner, not other of similar name.
In the manual (model ca200) it mentions that moisture on the blades (they need to be perfectly dry) or that the unit needs to be reset (just press the on button) can cause this error. Also dirty blades/wires or a bad power source. Good luck.