Hansa oven cooling fan runs continuously long after cooking has finished, or never runs at all.

Safety first: Disconnect power before accessing internal components.

• Understand normal behavior: On many Hansa ovens, the cooling fan runs for some time after cooking to protect electronics. Continuous running for hours, however, is abnormal.
• Check fan thermostat (if separate): Some models use a bimetal thermostat to control the cooling fan. Test for continuity at room temperature and when gently heated. Replace if stuck closed or open.
• Test fan motor: If the fan never runs, test the motor for continuity and replace if open.
• Control board: If the fan runs constantly even when the thermostat is open and the oven is cool, the control board relay may be stuck and the board will need replacement.

When to call a technician: Persistent fan issues often involve board-level faults; professional service is recommended.