Oven overheats and burns food even at low temperature settings.

Safety first: Turn off the oven immediately and isolate from mains. Allow to cool fully.

• Test thermostat or sensor: For mechanical thermostats, check for welded contacts and replace if necessary. For electronic models, test the NTC sensor resistance; replace if out of spec.
• Inspect control board: Look for a relay stuck closed (contacts welded) or a shorted triac controlling the elements. Board replacement is usually required.
• Check safety thermostat: Ensure the safety thermostat is functional; replace if it does not open at high temperature.
• Do not use the oven until the cause is corrected, as overheating is a fire risk.