E04
Senseo
Overtemperature Protection Triggered
E04 displayed; machine overheats or shuts down shortly after starting.
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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
Blocked water path causing dry‑boil, severe limescale in boiler, faulty thermostat, poor thermal contact of sensor to boiler
How to Fix / Troubleshooting
Safety first: Unplug and let the machine cool for at least 30–60 minutes before touching the boiler area.
- Descale immediately: Once cooled, run a full descaling cycle to restore proper heat transfer and water flow.
- Check for obstructions: Clean the pod holder, metal filter plate, and outlet spout to ensure water can exit freely.
- Do not cover vents: Ensure the machine’s ventilation openings are not blocked during operation.
- Service if recurring: Repeated E04 after descaling suggests a faulty thermostat or sensor that must be replaced by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Boiler Thermostat, Boiler Thermistor
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