Cooling fan runs continuously or does not run at all, oven may shut down with overheat error

Safety: Disconnect mains power and allow the oven to cool fully. Sharp metal edges are present behind panels.

• Identify the fan: The cooling fan is usually located at the top rear of the oven, blowing air across the control panel and cavity.
• Check for obstruction: Remove the top/rear cover and inspect the fan blades for insulation, debris, or grease buildup preventing rotation. Clean carefully.
• Spin test: With power off, spin the fan by hand. It should rotate freely without grinding. If stiff or seized, replace the cooling fan motor assembly.
• Check wiring: Inspect the fan's wiring harness and connectors to the main PCB for heat damage or loose connections. Repair or replace as needed.
• Electrical test: With the fan disconnected, measure motor winding resistance. An open circuit indicates a failed motor.
• Control fault: If the motor tests good but never receives voltage when the oven is hot, the fan control triac/relay on the PCB may be faulty, requiring PCB replacement.