Error 3
Jura Brew Group Drive Blocked or Position Sensor Fault

Display shows “Error 3” and the brew group does not move; machine may make a brief noise then stop.

Advertisements

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.

Advertisements

Possible Causes

Brew group (brew unit) jammed with compacted coffee, Stripped gears in drive mechanism, Faulty brew group position microswitch or encoder, Failed brew group drive motor

How to Fix / Troubleshooting

Safety first: Unplug the machine before reaching into the brew area. Moving parts can cause injury.

Step 1 – Remove and clean the brew group (if user-removable):

  • Open the service door and remove the drip tray and used coffee grounds container.
  • Remove the brew group according to the user manual.
  • Rinse the brew group thoroughly under warm water, moving the piston and screens to remove compacted coffee.
  • Allow it to dry and reinstall it firmly until it clicks into place.

Step 2 – Clear any obstructions:

  • Check the interior of the machine where the brew group sits for loose coffee grounds or foreign objects.
  • Vacuum or brush out debris that could block the brew group movement.

Step 3 – Reset the machine:

  • Reinstall the drip tray and grounds container.
  • Plug the machine back in and power on; allow it to perform its startup cycle.

Step 4 – Advanced checks:

  • If Error 3 persists, the drive motor or gears may be damaged.
  • With the housing removed (unplug first), inspect the brew drive gear train for broken teeth or misalignment.
  • Check the brew group position microswitch or encoder for loose wiring or misalignment.

Step 5 – Replace faulty parts:

  • Replace the brew group if it is mechanically seized or cracked.
  • Replace the drive motor or gear set if they are stripped or not turning.
  • Position sensors should be replaced or adjusted if they do not detect end positions correctly.
Advertisements

Repair Difficulty

Hard 4/5

Required Part

Brew Group Assembly
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements