Machine displays F2 and will not heat or brew

Safety first: Disconnect power before removing covers. The heater block can remain hot for several minutes after use.

User-level checks:

• Power-cycle the machine (unplug for 10 minutes, then reconnect) to clear transient faults.
• Ensure the machine is in a room above 5°C (41°F); extreme cold can confuse temperature readings.

Technical inspection:

• Remove the top and side panels to access the brew unit heater block.
• Locate the NTC sensor clipped or screwed into the heater block or thermoblock. It usually has two small wires leading to the control board.
• Check the sensor wiring for damage, chafing, or disconnection. Reseat the connector at both the sensor and control board ends.
• With a multimeter, measure the resistance of the NTC at room temperature; compare to Miele service specs (typically in the tens of kΩ). Infinite or near-zero resistance indicates a failed sensor.

Resolution:

• If the NTC is out of spec, replace the temperature sensor assembly specific to your Miele model.
• If the sensor and wiring are good but F2 persists, the control board's temperature input circuit may be defective and the board will need replacement by a technician.