Stuck at zero? Learn the real mechanical reasons your espresso pressure gauge failed.
The gauge measures resistance in the hydraulic circuit, not through a complex software calibration menu.
A clogged or stuck 3-way solenoid valve prevents water pressure from reaching the gauge sensor.
Tiny mineral particles often choke the thin capillary tube, effectively blinding your gauge from reading.
Running the tank dry causes air locks, where compressed air prevents the pump from building pressure.
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