Oven interior light does not turn on when door is opened, but works when manually switched on (or vice versa)

Safety first: Disconnect power before accessing switches or wiring.

• Check settings: Some De Dietrich models allow manual control of the light. Ensure it is not set to stay off.
• Test door switch: Manually operate the door switch and observe the light. If behavior is inconsistent, test the switch with a multimeter and replace if faulty.
• Control board: If the switch is good but the light does not respond correctly, the control board input or logic may be defective.