How to Fix / Troubleshooting

Safety: Turn off power and allow the oven to cool. Some components may still be hot near the control panel.

Check airflow and fan:

Inspect the front and rear ventilation openings for grease, dust, or obstructions. Clean thoroughly to restore airflow.
Access the cooling fan (usually above the oven cavity behind the control panel or rear cover). Verify that the fan blades spin freely.
With power restored briefly and caution, start a bake cycle and confirm whether the cooling fan receives power and runs. If it hums or does not start, replace the cooling fan motor.
Check any thermal switch or sensor mounted near the control area for proper operation (continuity when hot, open when cool, depending on design). Replace if stuck or out of spec.
If the fan and sensor are good but F08 persists, the EOC may be misinterpreting the temperature and should be replaced.

Viking oven shows F08; cooling fan runs continuously or oven shuts down due to overheat in control area.

Possible Causes