Sounds like a few knowledegable in here. I hope you can help me! I have the Breckwell Big E (big window), I just finally after 2 years, cleaned it completely. Now when we go to set the convection fan to the high setting, it doesn't go. In fact sometimes it sounds like the fan isn't even going. I say sometimes, because it acts like it runs on high fan when it wants to. I use to be able to go to high fan or back to auto anytime. Now it cycles up and down from high to low by itself. Only once in a while when I push the hi fan button, does it react to the "hi" setting. What could I have done? Or what could be wrong?