La Marzocco
Leaking Hot Water Valve
Hot water tap drips or flows slowly even when turned off.
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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.
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Possible Causes
Worn hot water valve seat, damaged internal seals, scale buildup preventing full closure, misadjusted valve stem
How to Fix / Troubleshooting
Safety first: Turn OFF and unplug the machine. Allow the boiler to cool and depressurize. Open the hot water tap to release pressure.
Steps:
- Verify closure: Ensure the hot water knob is fully closed and not stripped or loose.
- Disassemble valve: Remove the hot water tap assembly. Take note of the order of parts.
- Clean and descale: Soak the valve body and spindle in descaler to remove mineral deposits. Clean the seat area carefully.
- Replace seals: Install new O-rings and seals from a La Marzocco hot water valve rebuild kit.
- Reassemble and test: Reinstall the valve, restore power, and check for leaks. Replace the entire valve if the seat is damaged beyond repair.
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Repair Difficulty
Medium
3/5
Required Part
Hot Water Valve Assembly
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