Miele
Internal Leak in Hydraulic System
Dishwasher leaks water into the base tray and triggers the waterproof system (continuous drain pump).
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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 circulation pump housing, Loose hose clamp on sump or heater, Split drain or inlet hose, Leaking water softener or side water matrix
How to Fix / Troubleshooting
Safety: Unplug the dishwasher and close the water tap immediately.
- Remove water from base: Carefully tilt the dishwasher to drain water from the base tray. Remove the base panel and dry the float switch area completely.
- Locate leak: With panels removed, run a short cycle while observing all hoses, pump housings, and joints for drips.
- Tighten or replace: Tighten any loose hose clamps. Replace cracked hoses or leaking pump housings.
- Re-test: Once repairs are made and the base is dry, run another cycle to confirm no further leakage before reinstalling the machine.
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Repair Difficulty
Hard
4/5
Required Part
Hoses / Circulation Pump Housing / Sump Gasket
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