How to Fix / Troubleshooting

Safety first: Turn off power and allow the appliance to cool before accessing internal components.

Check fan operation: With the oven cool, restore power and observe if the fan runs immediately. If so, a stuck relay or shorted sensor is likely.
Locate thermostat/sensor: Access the top or rear of the oven to find the cooling fan thermostat or overheat sensor mounted on the top panel or near the flue.
Test sensor: Disconnect the sensor and measure continuity at room temperature. A normally open thermostat that reads closed indicates a fault.
Inspect wiring: Check for shorts between fan wires and chassis.
Replace faulty parts: Replace the thermostat/overheat sensor if stuck closed. If the fan relay on the control board is welded closed, replace the control board.

Oven display shows F8 and cooling fan runs continuously

Possible Causes