Oven interior light does not work, but heating and other functions are normal.

Safety first: Switch off power and allow the lamp to cool.

Steps to check:

• Remove the lamp cover and unscrew the bulb.
• Install a new, Gram-compatible, high-temperature oven bulb of the same wattage and base type.
• Inspect the lamp holder for corrosion or looseness; gently bend contacts to improve grip if needed, or replace the lamp holder.
• If the new bulb does not light, check the continuity of the lamp wiring from the holder to the control board (with power off).

Warning: Do not exceed the specified bulb wattage; overheating may damage the oven cavity.