Stop the noise and restore your espresso machine with these professional diagnostic steps.
The primary cause is an air pocket trapped inside the vibration pump blocking water flow.
A rattling, high-pitched pump sound usually indicates the machine is struggling against empty lines.
Mineral buildup from hard water chokes narrow silicone lines and clogs the internal solenoid valve.
Scale debris can wedge in the solenoid plunger, physically blocking water from reaching the group head.
Discover more at parmen.net