Dryer displays F23 and may stop heating or shut down.

Safety first: Unplug the dryer before accessing internal sensors.

• Check installation environment:
  • Ensure the dryer is installed in a room within the temperature range specified in the manual (typically 5–35°C).
  • Avoid unheated garages or boiler rooms with extreme temperatures.
• Locate ambient sensor: Often mounted near the air intake or on the control panel area; consult service documentation if needed.
• Inspect and test:
  • Check the sensor and wiring for damage.
  • Measure resistance at room temperature; replace if readings are abnormal.
• Control board: If the sensor is good but F23 persists, the main PCB may misread the sensor and require replacement.

Note: Allow the dryer to acclimate to room temperature if it was recently moved from a very cold or hot location.