E05
Saeco Temperature Sensor / Thermostat Fault

Machine displays E05 and stops; often associated with steam or hot water functions not working correctly.

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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

Defective NTC temperature sensor on boiler or thermoblock, Open thermal fuse, Loose wiring on heater circuit, Overheating due to scale buildup

How to Fix / Troubleshooting

Safety first: Unplug the machine and allow it to cool for at least 30 minutes before any inspection. Hot internal parts can cause burns.

User-level checks:

  • Descale the machine: Heavy scale can cause overheating and sensor errors. Run a full descaling cycle with Saeco-approved descaler following the on-screen instructions.
  • Check ventilation: Ensure the machine has adequate space around it and is not enclosed in a tight cabinet, which can cause overheating.
  • Power cycle: After cooling and descaling, unplug for 5 minutes, then reconnect and restart the machine.

When to call a technician: If E05 reappears, the NTC sensor, thermal fuse, or heater wiring likely needs testing and replacement. These components are on the high-voltage side and should only be serviced by a qualified technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Boiler NTC Temperature Sensor
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