HL0028: Buzzer broken

Updated on 2025-08-01

During the “Maintenance” routine “Buzzer check” it was determined that the buzzer is not working.

This is most likely caused by damage to the main controller (Ecu) of the Hydraloop.

If you can hear the buzzer very softly instead, inspect if nothing is obstructing the buzzer. In below image you see the location of the buzzer, with a piece of paper blocking it from making noise.