Smeg oven shows Er07 and interior light and some functions may not work.

Safety first: Disconnect power before removing any trims or panels.

• Check door closure: Ensure the door closes fully and evenly. Look for bent hinges or warped door that may prevent the switch from being actuated.
• Locate the door switch: On many Smeg ovens, the door switch is located behind the front frame near the top or side, actuated by the door when closed.
• Test the switch: Remove the front trim as needed to access the switch. With a multimeter, test continuity while pressing and releasing the switch. It should change state (open to closed or vice versa). If it does not, replace the switch.
• Inspect wiring: Check the harness from the switch to the main control board for breaks or loose connectors. Repair or replace damaged wiring.
• Reassemble and test: After replacing or adjusting the switch, reassemble the front trim, restore power, and confirm that the interior light and heating functions operate without Er07.