Oven display shows F15, often when using the grill or broil function.

Safety first: Disconnect power at the breaker and allow the oven to cool.

• Inspect grill element: Open the door and visually inspect the top grill element for blisters, breaks, or sagging. Replace if physically damaged.
• Test resistance: Access the element terminals from the rear or top. Disconnect one wire and measure resistance across the element. Replace if open or shorted.
• Check wiring: Inspect the wiring from the grill element to the control board, especially where it passes near hot surfaces. Repair any brittle or burned insulation and replace terminals as needed.
• Control board check: If the element and wiring are good, the grill control circuit on the main board may be faulty. Replace the main control board if F15 persists.