Display shows E04 and brewing stops; sometimes accompanied by loud pump noise and no water at the spout.

Safety: Unplug the machine before removing covers. Avoid spilling water on electrical components.

Basic user-level steps:

• 1. Check water tank: Ensure the reservoir is fully seated and filled. Remove and reinsert firmly to engage the inlet valve.
• 2. Run descaling cycle: If the machine can still pump some water, run a full descaling cycle using Electrolux-approved descaler. This can free a partially stuck flowmeter.
• 3. Bleed air: After refilling the tank, run several hot water cycles (if available) without coffee to purge air from the system.

Advanced checks (technician level):

• 4. Access flowmeter: The flowmeter is usually a small round plastic device in-line between the tank and pump. Remove the top cover and trace the silicone hose from the tank to the pump to locate it.
• 5. Inspect for blockage: Disconnect hoses (note orientation) and check for debris or scale. Rinse with warm water and reassemble.
• 6. Test sensor: With a multimeter, check the flowmeter output wires for pulsed voltage when water is manually pushed through (requires external low-voltage supply and is best done by a technician).

Resolution: If cleaning and descaling do not clear E04, replace the flowmeter with an Electrolux-compatible unit. Persistent errors after replacement may indicate a control board input fault.