E15
Siemens
Base Leak / Safety Float Switch Activation
Machine shows E15 and may not start; often associated with water detected in the base of the appliance.
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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
Internal water leak into base tray, Loose hose connection, Cracked boiler or hydraulic block, Faulty safety float switch
How to Fix / Troubleshooting
Safety first: Immediately unplug the machine if E15 appears. Water in the base can contact live parts.
Step-by-step:
- 1. Remove external water: Take out the drip tray and grounds container. Mop up any visible water.
- 2. Drain base tray (advanced): Carefully tilt the machine slightly (following the user manual guidance if available) to allow water in the base to drain onto a towel. Do not invert the machine completely.
- 3. Drying period: Leave the machine unplugged and open (service door, bean lid) for 24 hours to allow internal moisture to evaporate.
- 4. Test for recurrence: After drying, plug in and test. If E15 returns or you see new leaks, do not continue using the machine.
- 5. Professional leak detection: Internal leaks must be located and repaired by a Siemens technician, who will inspect hoses, connectors, the hydraulic block, and the safety float switch.
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Repair Difficulty
Professional Required
5/5
Required Part
Safety Float Switch
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