Machine displays E03 and stops; water does not reach the brew unit or steam circuit.

Safety: Unplug the machine before removing covers or hoses.

• Check water tank: Ensure the tank is fully seated, filled, and the tank valve (if present) opens properly when inserted.
• Bleed air: Remove and reinsert the tank several times. Run a hot water cycle (if possible) to purge air from the system.
• Descale: If the machine can still run a descaling program, perform a full descaling with an AEG-approved descaler to clear partial blockages.
• Inspect flowmeter: Access the internal hydraulic circuit and locate the plastic flowmeter (usually between tank and pump). Check for kinks in hoses and visible debris in the flowmeter inlet.
• Clean or replace: If the flowmeter wheel is stuck or heavily scaled, replace the flowmeter. Ensure all hose clamps are tight and leak-free when reassembling.