De'Longhi Pump Noise / Cavitation

Machine is unusually noisy during pumping or 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

Air in water circuit, Low water level, Blocked inlet filter, Aging vibration pump

Safety first: Keep hands away from moving parts while the machine is running.

Fill tank: Ensure the water tank is full and properly seated.
Prime circuit: Run a hot water cycle for 30–60 seconds to purge air.
Descale: Perform a descaling cycle to reduce pump strain.
If noise persists and performance drops: The pump may be wearing out and should be replaced by a service center.

Medium 3/5

Vibration Pump

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