Safety first: Isolate the oven from mains power before removing panels or touching wiring.

Inspect bottom element: In some Bauknecht models the bottom element is hidden under the oven floor. Remove the oven floor panel (if removable) to visually inspect the element for cracks or burn marks.
Access from rear: Remove the rear cover to access the bottom element terminals. Check for signs of overheating or loose connectors.
Continuity test: Disconnect the wires and measure resistance across the element. Expect a reading typically between 20–50 Ω. Infinite resistance means the element is open and must be replaced.
Check harness: Inspect the wiring harness from the element to the control board. Replace any burnt or brittle wires and ensure spade terminals are tight.
Control board: If the element and wiring are good, the bottom‑heat relay on the control board may have failed. Replace the control board if no voltage is supplied to the element during operation.

Oven does not heat in conventional or fan mode, F05 displayed, fan may still run.

Possible Causes