Dryer does not heat properly or stops with F03 on the display.

Safety first: Disconnect the dryer from mains power. Heating components can remain hot after use; allow it to cool down.

• Clean filters and airflow path:
  • Remove and thoroughly clean the lint filter.
  • Clean the heat exchanger (on condenser/heat pump models) following the user manual.
  • Check the exhaust duct for lint buildup or kinks.
  Restricted airflow can cause the NTC to overheat and trigger F03.
• Access the NTC sensor:
  • Remove the rear panel to access the heater housing or air duct.
  • Locate the small, probe-type sensor (NTC) fixed to the duct with two wires.
  • Check for broken wires, corrosion, or loose connectors.
• Test the NTC (if equipped with a multimeter):
  • Disconnect the sensor and measure resistance at room temperature; typical values are 5–20 kΩ depending on model.
  • Resistance should change smoothly when the sensor is gently warmed.
• Reseat connectors: At both the NTC and the main control board, unplug and re-plug the connectors to ensure good contact.
• If readings are out of range, open, or shorted: Replace the NTC sensor with a Bauknecht-compatible part.

Warning: Never operate the dryer with the NTC disconnected or bypassed; overheating and a fire risk may result.