Oven displays E012, fan may run but heating does not start

Safety: Ensure the oven is disconnected from mains before accessing internal components.

• Allow full cool-down: If the oven was recently used at high temperature or in pyrolytic mode, allow several hours for complete cooling, then reset power and test again.
• Locate high-limit thermostat: Typically mounted on the top or rear of the oven cavity. It may be a small round or rectangular device with two terminals.
• Check for manual reset: Some thermostats have a small reset button. Press gently to reset if tripped.
• Continuity test: With wires disconnected, measure continuity across the thermostat. An open reading when cold indicates a failed device.
• Inspect wiring: Follow the safety chain wiring from the thermostat to the control board, checking for loose or burnt connectors.

Recommendation: Replace any thermostat that does not reset or shows open circuit when cold. If all safety devices test good, the control board may be misinterpreting the signal and require replacement.