Oven displays F31 and may shut off or not start; often after long or high-temperature use.

Safety first: Turn off power at the breaker and allow the oven to cool completely.

• Check ventilation: Ensure that the oven has proper clearance around cabinets and that front and rear vents are not blocked by foil, pans, or other appliances.
• Inspect cooling fan: Confirm that the cooling fan runs during and after cooking. If not, test and replace the cooling fan motor as needed.
• Check high-limit thermostat: From the rear, locate the high-limit thermostat (thermal cutoff) on the oven body. Test for continuity; if open, it must be replaced.
• Reset (if resettable type): Some thermostats have a small reset button. If present and tripped, press to reset after the oven is cool.
• If components are good but F31 persists: The main PCB may be misreading temperature and require replacement.

Warning: Repeated overheating can damage cabinetry and wiring. Do not continue use until the cause is corrected.