Siemens
Internal Bypass / Drain Valve Leakage
Water collects excessively in the drip tray after each coffee; very little coffee reaches the cup.
Advertisements
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.
Advertisements
Possible Causes
Worn brew unit seals, Stuck drain valve, Misaligned brew group, Cracked internal outlet pipe
How to Fix / Troubleshooting
Safety first: Unplug the machine and allow it to cool before removing the brew unit.
Step-by-step:
- 1. Clean brew unit: Remove and thoroughly rinse the brew unit. Ensure the piston and filters are free of coffee residues.
- 2. Replace seals: Inspect and replace the large O-rings and seals on the brew unit using a Siemens-compatible seal kit.
- 3. Clean drain valve area: With the brew unit removed, clean the internal drain outlet and surrounding area of coffee sludge.
- 4. Test flow: After reassembly, run a rinse cycle and observe whether more water now exits through the coffee spouts instead of the drip tray.
- 5. Professional service: Persistent bypass indicates a faulty internal drain valve or cracked outlet path, requiring service by Siemens.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Brew Unit Seal Kit
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements