Miele Dryer Error Code F3

F3 indicates a short circuit in the fill ring temperature sensor, identified as component 1R30. The control board is reading a resistance value that corresponds to a temperature above 320 degrees Fahrenheit (160 degrees Celsius), which triggers a fault and stops the dryer. This is typically an electrical fault in the sensor or its wiring rather than actual overheating.

The dryer shuts down when F3 is triggered specifically to prevent operation under a fault condition in the temperature sensing circuit. Running the dryer without a functioning temperature sensor means the control cannot accurately monitor heat levels. It is best to leave the dryer off until the sensor or wiring has been inspected and repaired.

Repair costs vary depending on whether the fault is in the wiring or the sensor itself. If only the wiring harness or connector needs repair, costs may be in the range of $50 to $150 including labor. Replacing the 1R30 fill ring temperature sensor typically adds parts cost on top of labor, bringing the total range to roughly $150 to $350 depending on the technician and your location.

Resetting the dryer may temporarily clear the F3 code, but the fault will return as soon as the control board reads the sensor circuit again during operation. Because F3 relates to a temperature monitoring circuit, operating the dryer without resolving the underlying short circuit is not advisable. The issue needs to be diagnosed and repaired before normal use resumes.

Start by disconnecting the plug of the 1R30 fill ring temperature sensor and inspecting the wiring for visible damage, pinching, or melted insulation. Use a multimeter to measure resistance across the sensor terminals: a reading near zero ohms confirms an internal short in the sensor itself. If the sensor measures correctly, test the wiring harness for continuity between leads and check for any contact with the chassis ground. Repair or replace whichever component tests as faulty.