Cooling fan (tangential fan above the oven cavity) does not run; control panel and knobs become very hot.

Safety first: Turn off power and allow the oven to cool completely. Hot surfaces around the control panel can cause burns.

• Inspect air vents: Check the front and rear ventilation slots for dust, grease, or obstructions. Clean thoroughly to restore airflow.
• Access the cooling fan: Remove the top cover of the oven (for built-in models, pull the oven out slightly). Locate the tangential cooling fan above the cavity.
• Test the fan motor: Spin the fan wheel by hand; it should move freely. Measure resistance across the motor terminals. An open circuit indicates a failed motor that must be replaced.
• Check thermostat or control output: Some Bertazzoni ovens use a thermal switch to start the cooling fan. Test the switch for continuity when warm. If the motor is good but never receives power, suspect the thermostat or control board.
• Replace the cooling fan assembly: Disconnect wiring, remove mounting screws, install the new fan, and ensure wiring is routed away from hot surfaces.