Machine shows E10 and the steam wand or milk frother does not produce steam.

Safety first: Unplug the coffee maker and allow it to cool fully. Steam components can remain hot for a long time.

Steps:

• Clean steam wand: Remove the steam nozzle tip and soak it in hot water with a little detergent. Use a fine needle to clear any milk residue from the nozzle holes.
• Descale steam circuit: Run a descaling cycle and, if your model allows, open the steam function during descaling to flush the steam path.
• Check for steam at boiler: If you hear the boiler heating but no steam exits the wand, the steam solenoid valve may be blocked. This requires internal access.
• Access steam thermostat (advanced): Remove covers to locate the steam thermostat or thermistor on the boiler. Inspect for loose wires or burnt connectors.
• Resettable thermostat: If a manual-reset thermostat is present, press it gently to reset. If it trips repeatedly, there is an underlying overheating or scale issue.
• Reassemble and test: After cleaning and descaling, reassemble and test steam. Persistent E10 usually indicates a failed thermostat or solenoid valve that must be replaced.