Oven interior light does not work but all heating functions operate normally.

Safety first: Switch off power at the mains before changing the lamp or touching the lamp holder.

Steps to check:

• Replace bulb: Remove the glass cover and fit a new high-temperature oven bulb of the correct type.
• Check holder: Inspect the lamp holder for corrosion or heat damage. Replace if contacts are loose or burnt.
• Wiring: Ensure the lamp wires are firmly connected and not broken.