Jura Internal Water Leak

Machine leaks water under the unit onto the counter

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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, Leaking thermoblock or boiler, Failed O-ring on ceramic valve or pump outlet

How to Fix / Troubleshooting

Safety first: Unplug the machine immediately and do not operate it while leaking. Risk of electric shock and internal damage.

Step 1 – External checks:

  • Remove and empty the drip tray and water tank; dry the area.
  • Refill the tank and observe if water leaks without the machine running (tank or tank seal issue).

Step 2 – Internal inspection (advanced):

  • Remove the housing (unplug first).
  • Visually inspect all hoses, connectors, and the thermoblock while running a rinse cycle.
  • Look for drips or sprays of water.

Step 3 – Replace leaking components:

  • Replace cracked hoses and worn O-rings with heat-resistant food-grade parts.
  • If the thermoblock or ceramic valve body is cracked or corroded, replace the entire assembly.

Note: Because leaks can damage electronics, consider professional service if you are not experienced.

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Repair Difficulty

Professional Required 5/5

Required Part

Silicone Water Hoses and O-Rings
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