Breville espresso machine produces very weak coffee or under-extracted shots without any error code.

Safety: Normal operation; no special hazards beyond hot surfaces.

Steps:

• Adjust the grinder to a finer setting and ensure you are dosing the recommended amount of coffee.
• Use fresh, properly roasted beans and tamp evenly.
• Allow the machine to fully preheat, including the portafilter and cups.
• If shots remain weak even with correct technique, run a descale and cleaning cycle to restore proper temperature and flow.

Resolution: If performance remains poor, a technician can verify brew temperature with a thermometer and test the NTC sensor and thermostat for drift.