Oven fan does not run or runs erratically, display shows F5 when a fan-assisted mode is selected.

Safety first: Disconnect power and wait for the oven to cool before accessing the fan area.

• Access convection fan: Remove the oven shelves and the rear inner panel inside the cavity to expose the convection fan and cover.
• Check for obstructions: Try to spin the fan blade by hand. It should rotate freely without scraping. Remove any debris or baked-on grease that may be jamming it.
• Test fan motor: From the rear of the oven (after removing the back cover), locate the convection fan motor terminals. Measure resistance; an open circuit indicates a failed motor. Also check for signs of overheating or oil leakage from the motor.
• Inspect wiring and connectors: Ensure the fan motor connectors are tight and not burned. Repair any damaged wiring.
• Replace fan motor if needed: If the motor is seized or open, replace it with a compatible Gorenje convection fan motor. Reassemble and test.
• If F5 persists: The fan relay or control circuit on the main PCB may be defective and require board replacement by a professional.