My knmore quietuard 3 does not clean very well. It seems that no steam comes out anymore either. I have checked for water block at the screan and grnding area but everything seems clear. Could it be the heating element is bad after only a couple of years and not running dry that I know of? How do I check it and replace t if necessary?

I have the same unit and the same problem my heating element was toatsed and it's only a couple years old.. Got it replaced and she works like new