A long shot - but may help...

I had a similar problem with a brand new extractor that did not seem to do
anything either.

When I finally opened the cover a few weeks later I discovered that there is
a leaver inside that should be set depending on whether you extract to the
outside, or to the inside (filtering only). Needless to say, mine was set to
external extraction mode, which was blocked with a cover, as I only wanted
it to filter. The smell from the fan was interesting too... Pretty
embarrassing I must say, although it wasn't me who fitted it.

May be worth checking whether you have such settings, and whether it moved.

Just my 2p-worth.

J.

"flashgorman" wrote in message
...
Hi,

I have a hood type extractor fan over my hob. Lately this has given up on
its extracting duties. When I turn it on theres the usual whizzing noises
but no air is being sucked up into the hood. I took the cover off the hood
and removed the filter (pretty clean). There's a big fan that spins round
at
an impressive rate but I can't feel any updraught of air into it. I
climbed
on to the kitchen roof and checked that the vents are clear and you can
feel
a slight draught coming from the vent.

Any clues?

--
Flash Gorman.

http://www.flashgorman.com