E05
Dualit Steam Thermostat / Steam NTC Fault

The display shows E05, and the steam function is disabled; brewing may still work, but the steam wand does not heat.

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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.

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Possible Causes

Failed steam temperature sensor (NTC) on the steam boiler, Open-circuit steam thermostat, Loose wiring to the steam heater, Faulty steam control triac on the main PCB

How to Fix / Troubleshooting

Safety first: Unplug the Dualit coffee maker and allow the steam boiler to cool completely. Steam circuits can cause severe burns.

Basic checks:

  • Power reset: Disconnect power for 10 minutes, then reconnect and test the steam function. If E05 reappears, proceed to internal checks.

Internal checks (advanced):

  • Access steam boiler: Remove the cover to locate the steam boiler or dedicated steam thermoblock.
  • Inspect steam NTC/thermostat: Identify the sensor or thermostat attached to the steam boiler. Check for physical damage or loose mounting.
  • Check wiring: Ensure all connectors from the steam boiler to the main PCB are secure and not heat-damaged.
  • Test components: Use a multimeter to check the continuity of the steam thermostat and the resistance of the steam NTC. Replace any component that is open or out of specification.

Warning: If you are not comfortable working around high-temperature components and mains voltage, contact a professional technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Steam Boiler Thermostat
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