Machine shows E18 and cannot froth milk properly
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety first: Unplug the machine and allow it to cool fully before working near the steam circuit.
User steps:
- Descale: Run a descaling cycle focusing on the steam/hot water circuit to remove limescale.
- Steam purge: After descaling, run steam for 30–60 seconds to clear residual solution and check for stable steam output.
Internal checks (advanced):
- Access the steam thermoblock and its NTC sensor.
- Inspect wiring and connectors for heat damage or looseness.
- Measure heater and NTC resistance with a multimeter and compare to specifications.
If the steam thermoblock or its sensor is defective, replace the faulty component. If both test good, the main control board may have a steam control fault and should be evaluated by a professional.
Repair Difficulty
Required Part
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