Miele F122

Miele error code F122 indicates: The device displays an error code and may not regulate temperature properly, based on an incorrect room temperature reading..

The primary root cause for Miele code F122 is: The ambient temperature sensor transmits inconsistent data or data outside of acceptable limits to the electronic board, indicating a short circuit, open or component failure..

To resolve error code F122: Locate the ambient temperature sensor in the device. Check the resistance of the probe with an ohmmeter and compare it to the manufacturer's reference values. Inspect its wiring for possible damage. Replace the probe if it is found to be defective.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Miele code F122 persists, the physical component causing The ambient temperature sensor transmits inconsistent data or data outside of acceptable limits to the electronic board, indicating a short circuit, open or component failure. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test NTC Temperature Sensor Probe (Thermistor) across Across sensor pins 1-2 (unplugged harness). Expected nominal reading is 4.8kΩ–12kΩ (at 20°C–25°C). Tolerance: Negative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit..

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.