F11
Liebherr Steam Generator / Water System Fault

Oven display shows F11 and steam-assisted or moisture functions do not operate (on models with steam support).

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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

Empty or incorrectly seated water tank, Blocked water inlet to steam generator, Failed steam generator heating element, Faulty water level sensor

How to Fix / Troubleshooting

Safety first: Allow the oven to cool and disconnect power before accessing internal steam components. Hot steam can cause severe burns.

Basic user checks:

  • Ensure the water tank is filled with clean water and correctly inserted into its compartment.
  • Remove and reinsert the tank firmly to ensure proper engagement with the internal valve.

Internal checks (advanced):

  • Access the steam generator assembly (usually behind a side or top panel).
  • Inspect the water inlet hose and filter for kinks or blockages; clean or replace as needed.
  • Test the steam generator heating element for continuity with a multimeter; replace if open.
  • Check the water level sensor or float switch for free movement and correct electrical operation.

Because steam systems operate under pressure and high temperature, complex repairs should be performed by a trained technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Steam Generator Assembly
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