Machine displays E07 and may leak slightly into the drip tray; brewing stops prematurely.

Safety first: Unplug the machine before removing the brew unit or drip tray. Expect some residual water in internal hoses.

• Clean brew unit and interior: Remove the brew unit and drip tray. Clean all accessible areas, especially around the drainage channel where water exits the brew chamber.
• Run cleaning and descaling cycles: Use Bosch cleaning tablets for the brew unit and descaler for the hydraulic system. This can free partially stuck valves.
• Check for mechanical obstruction: With the brew unit removed, observe the drain valve area (usually beneath the brew chamber). Look for coffee pucks or debris blocking movement and remove carefully.
• Reset the machine: After cleaning, reinstall components, power on, and allow the machine to run its self-test. Listen for the valve motor cycling.
• If E07 persists: The drain/diverter valve assembly or its motor may need replacement. This requires internal access; professional service is advised.