I have cleaned my air cleaner several times and have never had this problem. It is now making a hissing sound, I have flipped it over and taken apart to try to fix with no help. I do not have a manual. The bulb is dimmer and comes on at random. I have unplugged to reset with still no help. Please if you have any tips I would appreciate it. I love my ionic breeze and want to keep it! Thank you Lisa Contact information : Finslovessam@gmail