Error 30
Jura Hot-Water Valve Position Fault

Display shows “Error 30”; machine may not detect the hot-water valve position correctly.

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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

Stuck hot-water valve due to scale, Faulty valve position sensor, Broken valve actuator, Wiring fault to valve or sensor

How to Fix / Troubleshooting

Safety first: Unplug the machine and allow it to cool. Hot water and steam can cause burns.

Step 1 – Descale the machine:

  • Run a full descaling cycle to remove scale from the hot-water valve and lines.

Step 2 – Operate hot-water function:

  • After descaling, run several hot-water draws to flush the valve.
  • Listen for smooth valve operation; grinding or sticking indicates mechanical issues.

Step 3 – Internal inspection (advanced):

  • Remove the housing (unplug first).
  • Locate the hot-water valve and its position sensor.
  • Check for leaks, scale buildup, or broken actuators.
  • Clean or replace O-rings as needed.

Step 4 – Replace faulty parts:

  • Replace the hot-water valve if it is seized or leaking.
  • Replace the position sensor if it does not correctly report valve position.
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Repair Difficulty

Hard 4/5

Required Part

Hot-Water Valve
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