Product review (5 stars): even though the thermo-coupler didn't seem dirty, and - hey presto - it now works ...
We have had a Bertazzoni oven for, it must be, a quarter of a century and never needed servicing. Today the oven light went out consistently after 30 seconds beyond ignition and release after the prescribed safety period of 10-15 seconds. I called the service department and talked to Tracy and she said: "Unscrew the two Phillips screws on the front of the bottom shelf, push the shelf forward and then pull it out, and clean off the thermo-coupler behind the ignition." I did what she said, even though the thermo-coupler didn't seem dirty, and - hey presto - it now works fine. Thanks, Tracy. The number I called was 866-905-0010.