F11
Melitta
Milk Frother / Steam Circuit Fault
Display shows F11 and the machine reports a milk system error or cannot froth milk.
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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
Blocked milk frother nozzle, Clogged milk suction hose, Faulty milk pump or air pump, Blocked steam valve in milk circuit
How to Fix / Troubleshooting
Safety first: Unplug the machine and allow the steam system to cool before disassembly.
Steps:
- Clean milk system: Disassemble the milk frother spout, nozzle, and milk suction tube according to the Melitta manual. Soak parts in warm water with milk system cleaner, then rinse thoroughly.
- Run cleaning program: Use the built-in milk system cleaning program with Melitta milk system cleaner to flush internal milk and steam paths.
- Check hoses: Inspect silicone milk hoses for kinks, cracks, or blockages. Replace if hardened or discolored.
If F11 persists, the internal milk pump or steam valve may be defective and require replacement by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Milk Frother Assembly
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