A:Answer If you can return it. I am on my third unit and the same keeps happening. I found the part has a design defect, and I think they were fixing that. All that being said, it happened again to my third unit. Dyson makes quality stuff, but this product is sooo bad I am surprised they allowed it to go to market. It seems this happens to pretty much all of their PH01 humidifiers, so its definitely not just you.