wrote:
I have a Baumatic BT79 cooker extractor hood that is vented to the
outside. It has 3 speeds and has worked flawlessly for 3 years. The
other night I switched it onto the highest speed and got no extraction
just a low hum, the other 2 speeds work just fine. What could be wrong?

Try this thread: http://tinyurl.com/p8h94 (or
http://groups.google.co.uk/group/uk.d-i-y/browse_frm/thread/f1a3d7a3586d3a40/54637d688beffe8b?&hl=en#54637d688beffe8b

David