Miele Refrigerator Error Code F111

F111 indicates that the freezer air NTC thermistor is reporting a resistance value that falls outside the valid temperature range, specifically below -66°F (-55°C) or above 140°F (60°C). Because neither extreme reflects a real freezer condition, the control board flags the sensor as faulty. The error points to a problem with the sensor itself, its wiring, or its connector rather than an actual temperature problem in the freezer compartment.

Operating the refrigerator with an active F111 fault is not recommended for extended periods. Without a functional freezer air temperature sensor, the control board cannot accurately regulate cooling cycles, which may result in the freezer running too warm and food spoiling. It is best to address the fault promptly or at minimum monitor freezer temperatures closely with a separate thermometer until repairs are made.

A power reset may temporarily clear the F111 code from the display, but the fault will return if the underlying issue with the freezer air NTC sensor or its wiring has not been resolved. The control board re-evaluates the sensor signal continuously, so any reset is only a short-term measure. Permanent resolution requires repairing or replacing the faulty sensor or wiring.

A knowledgeable DIYer can start by inspecting the wiring harness and connector to the freezer air NTC sensor for obvious damage or a loose connection, which requires no parts. If those checks pass, the next step is replacing the freezer air NTC sensor, which involves accessing the sensor inside the freezer compartment. If replacing the sensor does not clear the fault, the issue may involve the control board, and professional service is recommended at that point.

If the repair only requires replacing the freezer air NTC sensor, parts costs are generally in the range of $20 to $80 depending on the specific model, with labor adding $100 to $250 if a technician performs the work. If the wiring harness needs repair or replacement, costs can be somewhat higher. In the unlikely event the control board is the root cause, total repair costs can rise significantly, often ranging from $300 to $600 or more including parts and labor.