F19
Liebherr
Humidity Control Calibration Fault
Dryer shows F19; may be associated with sensor-dry programs not functioning correctly.
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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
Incorrect moisture sensor calibration, Software error, Contaminated sensor bars, Control board fault
How to Fix / Troubleshooting
Safety first: Disconnect power before cleaning or accessing internal parts.
- Clean moisture sensors: Thoroughly clean the sensor bars inside the drum with a non-abrasive cleaner to remove residues.
- Run calibration (if available): Some Liebherr models have a service calibration program for humidity sensing. This must be initiated via a specific button sequence (refer to service documentation).
- Avoid small loads: Use appropriately sized loads in sensor-dry programs; very small loads can confuse humidity sensing.
- Control board check: If F19 persists after cleaning and proper use, the control PCB may be misreading sensor input and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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