Ascaso Overpressure Indication

Ascaso machine's pressure gauge reads very high (pegged) during brewing.

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.

Possible Causes

OPV misadjusted or stuck closed, Blocked group or portafilter, Faulty gauge calibration, Excessively fine grind

Immediate steps:

Stop brewing: Turn off the pump and remove the portafilter.
Test with blind basket: Use a portafilter gauge or blind basket to measure actual pressure.
Adjust OPV: If pressure exceeds spec, adjust the OPV to reduce pressure, or replace it if it does not respond.
Clean group and basket: Remove blockages by cleaning the shower screen, basket, and group passages.

Medium 3/5

Overpressure Valve (OPV) / Pressure Gauge

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