E18
Siemens
Rinse / Cleaning Program Fault
Display shows E18 and the machine cannot complete a rinse or cleaning cycle.
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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 internal rinse path, Faulty diverter valve, Incomplete previous cleaning cycle, Software error in cleaning program
How to Fix / Troubleshooting
Safety first: Unplug the machine before internal inspection. Hot water may be present.
Step-by-step:
- 1. Restart cleaning: Cancel the current program (if possible), power off, then restart the machine and initiate a fresh rinse or cleaning cycle from the beginning.
- 2. Check water and waste containers: Ensure the water tank is full, the drip tray and grounds container are correctly inserted, and not overfilled.
- 3. Clean brew unit and spouts: Remove and clean the brew unit, coffee spouts, and any removable outlet parts to ensure water can flow freely.
- 4. Descale: Run a full descaling program to clear any scale that may be blocking the rinse path.
- 5. Professional service: If E18 recurs, the diverter valve or control board may be malfunctioning and should be checked by Siemens service.
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Repair Difficulty
Medium
3/5
Required Part
Diverter Valve
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