Richard Sterry wrote:

...then it would appear to be defying the laws of physics! If the ducts are
clear, the outlet grill is clear, the recirculate/extract lever is in the
right position, and the fan is going round at a decent speed, then it MUST
draw air through. If air is not being drawn through, then one of the
previous assumptions/observations must be wrong.

Unless it's the unknown factor 'X' of course. ;-)

Like a burnt out or shorted motor winding? It would still spin but with
far less force....

--
Cheers,

John.

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