Miele Dryer Error Code F01 — NTC Temperature Sensor Fault
What this means
Error F01 on Miele dryers indicates the NTC temperature sensor in the drying system has failed — either shorted (near-zero resistance) or open-circuit (infinite resistance). The control board cannot regulate the drying temperature without a valid sensor reading. The dryer will stop heating to prevent overheating. Miele heat-pump dryers may have multiple NTC sensors; F01 typically refers to the primary exhaust air sensor.
Alternate codes: F 01, F1
Step-by-step fix
4 stepsIdentify the sensor location
Unplug the dryer. On conventional Miele dryers, the primary NTC sensor is in the exhaust duct or at the drum exit. On heat-pump models, there are sensors at the evaporator and condenser. Consult your model's service diagram.
Miele heat-pump dryers (T1 series) typically have 4 NTC sensors. F01 usually refers to sensor 1.
Test the NTC sensor
Disconnect the sensor and measure resistance. At room temperature (~20°C), the sensor should read approximately 10–20 kΩ depending on the type. Near-zero or infinite resistance indicates failure.
If you have a heat gun, warm the sensor gently while watching the multimeter — resistance should decrease smoothly with temperature.
Inspect the wiring
Check the sensor wiring for damage, especially near the drum area where heat can degrade insulation. Ensure the connector is fully seated.
Lint can accumulate around sensor wiring and cause insulation damage over time.
Replace the sensor
If the sensor reads out of specification, replace it. On Miele dryers, the sensor is typically a small probe secured by a clip or push-fit. Pull the old one out and insert the replacement.
Ensure the replacement sensor is the correct part for your specific model — different dryer series use different NTC curves.
When to call a professional
If the sensor replacement does not resolve F01, the control board input circuit may be damaged.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.