Leisure range conventional (top) oven not heating, grill still works, E04 displayed when top oven is selected.

Safety first: Isolate the appliance from mains power before removing any panels.

Check the top oven heating circuit:

• Identify whether your Leisure model uses a roof element, base element, or both in the top oven. Remove the inner panels to access the elements.
• Visually inspect the elements for splits, burn marks, or deformation.
• Access the rear of the cooker and locate the corresponding element terminals. Check for loose or overheated connectors.
• Test each element with a multimeter for continuity (typically 20–60 Ω). Replace any open-circuit element with the correct Leisure top oven element.
• If elements are good, remove the control panel and inspect the top oven selector switch and top oven thermostat. Look for burnt contacts or melted plastic.
• Test continuity through the selector switch in the top oven positions. If contacts are not closing, replace the selector switch.

Warning: The control panel area contains live mains connections when powered. Do not work in this area unless power is fully isolated.