Miele
Internal Bypass Leak / Drain Valve Leak
Water collects inside the drip tray very quickly, even when not brewing
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
Leaking brew unit drain valve, faulty overpressure valve returning water to drip tray, cracked internal manifold
How to Fix / Troubleshooting
Safety first: Disconnect power before internal inspection.
User-level checks:
- Empty the drip tray and monitor how quickly it fills during standby and brewing.
- Ensure the drip tray is correctly positioned and not tilted.
Technical inspection:
- Remove the front panel to observe the brew unit area during a rinse cycle.
- Check the brew unit drain valve and associated hoses for continuous dripping into the drip tray.
- Inspect the overpressure valve outlet; excessive bypass flow may indicate a faulty valve.
Resolution:
- Replace a leaking brew unit drain valve or overpressure valve.
- Repair or replace any cracked manifolds or fittings directing water to the drip tray.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Brew Unit Drain Valve / Overpressure Valve
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements