Miele
External Leak from Hydraulic Circuit
Machine leaks water under the unit during or after brewing
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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
Cracked silicone hose, loose hose clamp, worn O-rings at heater block or brew unit, leaking water tank outlet valve
How to Fix / Troubleshooting
Safety first: Unplug the machine immediately. Water near electrical parts is hazardous.
User-level checks:
- Remove and inspect the water tank for cracks or damage, especially around the outlet valve.
- Check that the drip tray is correctly inserted and not overflowing.
Technical inspection:
- Remove the outer panels and inspect the internal hoses and connections while running a test cycle (use extreme caution and avoid contact with live parts).
- Look for drips around the pump, heater block, flow meter, and brew unit connections.
- Check all O-rings for flattening, cracking, or hardening.
Resolution:
- Replace any leaking hoses, O-rings, or the water tank outlet valve with Miele-approved parts.
- Ensure all push-fit connectors are fully seated and clamps are tight.
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Repair Difficulty
Hard
4/5
Required Part
Internal Water Hoses / O-Rings / Water Tank Outlet Valve
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