Alarm beeping, high temperature warning, E09 displayed

Safety first: Work with the unit unplugged when adjusting doors or replacing switches.

Steps:

• Check door closure: Ensure no containers or shelves are preventing the door from closing fully. Look for warped shelves or oversized items.
• Inspect gaskets: Examine door seals for tears, gaps, or debris. Clean with warm soapy water and dry thoroughly. Use the paper test: close the door on a sheet of paper; you should feel resistance when pulling it out.
• Test door switch: Locate the door switch (usually in the frame). Press it in and out; the interior light should turn on/off. If not, the switch may be faulty.
• Replace switch if needed: Pry out or unscrew the switch, disconnect the wires, and install a new Bosch-compatible switch, reconnecting wires in the same orientation.
• Check door alignment: If the door sags or rubs, adjust the hinge screws slightly to level the door so it seals properly.

Note: If the physical switch and gasket are fine but E09 persists, the control board's door input circuit may be defective and require service.