Bosch
Internal Water Leak
Machine leaks water under the unit or inside the cabinet.
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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-ring on thermoblock or pump, Cracked water tank or tank outlet
How to Fix / Troubleshooting
Safety first: Unplug the machine immediately. Water and electricity are a dangerous combination.
- Inspect water tank: Remove the tank and check for cracks or leaks by filling it over a sink. Inspect the outlet valve and seal.
- Check external connections (plumbed-in models): Inspect the inlet hose and connections for drips.
- Look for visible internal leaks: Open the service door and check for water trails or pooling. Do not continue using the machine if you see internal leaks.
- Dry the area: Wipe up any water and allow the machine to dry completely before further use.
- For persistent leaks: Internal hoses, O-rings, or components must be replaced. This requires opening the chassis; contact Bosch service.
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Repair Difficulty
Professional Required
5/5
Required Part
Silicone Water Hoses and O-Rings
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