Display shows F04 and oven does not start or stops shortly after start, often related to grill or top heating.

Safety first: Disconnect mains power before accessing any internal wiring or elements.

• Visual inspection of grill element: Look inside the oven at the top grill element. Check for visible breaks, blisters, or burn marks.
• Access terminals: Remove the oven from the cabinet and take off the rear panel to access the grill element terminals. Inspect for burnt connectors or discolored insulation.
• Continuity test: Disconnect the wires from the grill element and measure resistance across the element. A typical reading is between 15–40 Ω depending on power rating. Infinite resistance indicates a failed element.
• Check wiring: If the element tests good, inspect the wiring harness from the element to the control board for damage or loose spade terminals. Repair or replace any burnt connectors.
• Control board relay: If wiring and element are good, the grill relay on the control board may be defective. Replace the main control board if the relay is not switching or is visibly damaged.