Jura Internal Bypass / Brew Group Seal Failure

Water runs into the drip tray instead of the cup during brewing

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.

Possible Causes

Worn brew group piston seals, Leaking ceramic valve diverting flow, Cracked internal hose or connector, Overpressure valve opening due to blockage

How to Fix / Troubleshooting

Safety first: Unplug the machine and let it cool before opening.

Step 1 – Observe during brewing:

Remove the drip tray and watch inside (if visible) while brewing to see where water is exiting.

Step 2 – Clean and descale:

Run a cleaning tablet cycle and a descaling cycle to clear blockages that may cause overpressure.

Step 3 – Brew group inspection (advanced):

Remove the brew group and inspect piston seals for wear or cracks.
Replace seals or the entire brew group if they are worn.

Step 4 – Internal leak check:

With the housing removed (unplug first), inspect hoses, connectors, and the ceramic valve for leaks during a test brew.
Replace any leaking hoses, O-rings, or the ceramic valve if necessary.

Repair Difficulty

Hard 4/5

Required Part

Brew Group Piston Seals

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