INSERT PORTAFILTER
Breville Portafilter Presence / Lock Detection Fault

Breville espresso machine displays INSERT PORTAFILTER and will not start extraction.

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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

Portafilter not fully locked in, Worn group head lugs, Faulty portafilter microswitch, Misaligned sensor

How to Fix / Troubleshooting

Safety: Ensure the machine is idle and not under high pressure when inserting the portafilter.

Steps:

  • Insert the portafilter and rotate firmly to the LOCK position.
  • Check for excessive play or wear on the portafilter ears or group head lugs.
  • Clean the group head area to remove coffee buildup that may prevent full insertion.

Advanced:

  • Access the portafilter presence switch or sensor behind the group head.
  • Test the switch with a multimeter while inserting the portafilter; adjust or replace if it does not actuate.

Resolution: Replace the portafilter if the ears are worn. Replace or adjust the presence switch if it fails to detect a properly locked portafilter.

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Repair Difficulty

Medium 3/5

Required Part

Portafilter Presence Switch
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