F14
Liebherr Moisture Sensor Circuit Fault

Dryer displays F14; humidity-controlled programs end too early or run indefinitely.

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Possible Causes

Dirty or coated moisture sensor bars, Broken or disconnected sensor wiring, Shorted sensor to drum, Defective control board sensor input

How to Fix / Troubleshooting

Safety first: Unplug the dryer before cleaning or accessing internal wiring.

  • Locate moisture sensors: Typically two metal strips inside the drum near the lint filter opening or on the front bulkhead.
  • Clean sensor bars: Wipe the bars with a cloth dampened with white vinegar or mild detergent to remove fabric softener and residue. Rinse with a damp cloth and dry.
  • Inspect for damage: Ensure the bars are not bent or touching the drum. Check that the mounting screws are tight and not corroded.
  • Check wiring: From behind the front panel, trace the wires from the sensor bars to the control board. Ensure connectors are secure and wires are intact.
  • Test operation: Run a sensor-dry program with a damp load. If F14 returns after cleaning and wiring checks, the control board may require replacement.
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Repair Difficulty

Easy 2/5

Required Part

Moisture Sensor Bars
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