Ice maker runs briefly, then stops and displays E3; ice basket remains empty or only partially filled.

Safety first: Unplug the unit and remove all water from the reservoir before working on the water system.

• Clean the reservoir: Remove the ice basket and access the water reservoir. Check for debris, scale, or slime that could block the float or sensor. Clean with warm water and a mild descaling solution safe for ice makers.
• Check the float movement: If your Clatronic model uses a float, move it up and down by hand. It should move freely and return smoothly. If it sticks, clean the float and its guide tube thoroughly.
• Inspect the level sensor: For electronic probes, clean the metal contacts with a soft brush and vinegar solution to remove mineral deposits. For reed‑switch types, ensure the magnet in the float is intact and close enough to the sensor body.
• Wiring and connectors: Trace the sensor wires to the main PCB. Reseat the connector and check for corrosion or broken conductors.
• Replace faulty sensor: If E3 persists after cleaning and inspection, replace the water level sensor or float switch assembly with a Clatronic‑compatible part.