The oven overheats and burns food even at low settings, with no error code displayed.

Safety: If the oven is overheating, switch off the power immediately and do not use it until repaired.

• Check thermostat setting: Confirm the temperature knob markings align with the pointer. A slipped knob can lead to false temperature settings.
• Test sensor or thermostat: On electronic models, measure the NTC sensor resistance; replace it if shorted. On mechanical models, test the thermostat contacts for continuity; they should open when the shaft is turned to the 'off' position.
• Observe cycling: With a thermometer inside, run the oven and see if the element cycles off when the set temperature is reached. If it stays on continuously, the thermostat or control board is faulty.
• Replace faulty control: Replace the thermostat (mechanical) or sensor/PCB (electronic) as indicated by tests.