Viking oven shows F13 and may shut down during use; sometimes associated with fan noise or lack thereof.

Safety first: Disconnect power and allow the oven to cool completely before accessing the rear or interior fan components.

Steps to check and correct:

• Check fan operation: During a convection bake, you should hear the convection fan running. If silent or noisy, proceed with inspection.
• Access convection fan: Remove the oven racks and the rear interior panel inside the oven cavity to expose the convection fan blade and motor shaft.
• Inspect blade: Ensure the fan blade is securely attached and not rubbing against the shroud. Remove any food debris or grease buildup.
• Test motor: With power off, spin the fan blade by hand; it should move freely. If stiff or seized, the motor likely needs replacement. Test motor windings for continuity with a multimeter.
• Check wiring and relay: From the rear of the range, inspect the wiring harness to the convection motor and the relay on the control board. Repair any damaged wires and replace the relay board if the relay is burnt.

When to call a technician: Replacing the convection motor often requires pulling the range out and working from both inside and behind; professional service is recommended if you are not experienced.