La Marzocco Low Steam Pressure / Capacity

Steam pressure is low; steam wand produces weak steam and struggles to texture milk.

Advertisements

Safety Warning

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.

Advertisements

Possible Causes

Steam boiler pressure set too low, scaled steam boiler reducing capacity, partially blocked steam tip, failing pressurestat or pressure sensor

How to Fix / Troubleshooting

Safety first: Steam is very hot and can burn. Turn OFF and unplug the machine before removing any parts from the steam circuit.

Steps:

  • Check steam gauge: Verify actual steam pressure on the gauge. Typical operating pressure is around 1.3–1.5 bar (model dependent).
  • Clean steam tip: Remove the steam tip and soak in espresso cleaner or descaler. Use a fine needle to clear each hole.
  • Verify pressure setting: For machines with adjustable pressurestat or electronic pressure control, check and adjust the setpoint according to La Marzocco specifications.
  • Inspect for scale: Heavy scale in the steam boiler reduces effective volume and heat transfer. Schedule a professional descaling service if scale is suspected.
  • Check pressure control device: If the boiler never reaches set pressure or cycles erratically, the pressurestat or pressure sensor may be failing and should be replaced.
Advertisements

Repair Difficulty

Hard 4/5

Required Part

Steam Boiler Pressure Sensor
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements