La Marzocco machines, from the Linea Mini and Micra at home to the Linea PB in cafes, are built to last. Even so, these faults come up regularly.
1. Group head leaking
Why it happens: group gaskets harden with heat, especially in busy cafes.
The fix: replace the gasket and shower screen. Cafes should do this regularly as routine maintenance.
2. Temperature drifting
Why it happens: scale in the brew boiler, a faulty temperature probe or a failing heating element.
The fix: test the probe and element and descale the boiler.
3. Inconsistent volumetric doses
Why it happens: a blocked or worn flowmeter, or scale in the gicleur.
The fix: clean or replace the flowmeter and reprogram the doses.
4. Steam boiler not filling
Why it happens: a scaled level probe, a sticking autofill solenoid or low water supply.
The fix: clean or replace the probe and solenoid and check the water supply.
5. Steam valve leaking
Why it happens: worn steam valve seals.
The fix: rebuild the valve with genuine seals.
The best prevention
Good water filtration is the biggest factor in La Marzocco reliability. Most of the faults above start with scale.
La Marzocco needing a repair? Book a free assessment or call 0424-140-133.