Product review (4 stars): F9 code was wrong - it was the fan and NOT the lock!
Finally no more F9 errors (which mean its the locking mechanism not the fan) however we figured out that it was indeed the fan and NOT the lock (of which we also replaced) - if you are getting an F9 code check and see if your fans are running - they should turn on when you start your oven - if they do not come on - my bet is that your fan has gone bad and not your lock!

the only reason why I gave this four stars and not five was because the product arrived broken from bad packing during shipment