Miele Refrigerator Error Code F1 — Fridge Compartment Sensor Fault
What this means
Error F1 on Miele refrigerators indicates the NTC temperature sensor in the fridge compartment is reading an abnormal value — either short-circuit, open-circuit, or out of range. Without accurate temperature data, the refrigerator cannot regulate the compressor and fans properly, potentially leading to overcooling or undercooling of food. The display may flash F1 or show an alarm indicator.
Alternate codes: F 1, F01
Step-by-step fix
4 stepsNote current temperature behavior
Check if the fridge feels too warm or too cold. If it is running continuously (compressor always on) or not running at all, this confirms the sensor issue is affecting temperature regulation.
Use a separate fridge thermometer to verify the actual internal temperature while troubleshooting.
Locate the sensor
Unplug the refrigerator. The fridge compartment sensor is typically mounted on the back wall inside the fridge, often near the air inlet from the evaporator. It may be behind a cover panel. Locate and disconnect the sensor connector.
On some Miele models, the sensor is clipped to the evaporator cover behind the back panel of the fridge compartment.
Test the sensor
Measure resistance with a multimeter. At typical fridge temperature (~4°C/39°F), a 5 kΩ NTC sensor should read approximately 7–10 kΩ. At room temperature (~20°C), it should read approximately 5 kΩ. Open-circuit or near-zero readings indicate failure.
NTC resistance decreases as temperature increases. If you warm the sensor in your hand, the reading should drop.
Replace the sensor
If the sensor is faulty, replace it with the correct Miele part. Unclip the old sensor, disconnect its wire, connect the new sensor, and clip it in place. Reassemble any cover panels.
After replacing the sensor, plug in the refrigerator and allow 24 hours for temperatures to stabilize before judging performance.
When to call a professional
If the sensor replacement does not clear F1, the control board may have a fault. Refrigerator control boards on Miele built-in units may require professional access.
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.
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