Oven shows F10 and may not heat; often associated with a second temperature sensor (e.g. grill or pyrolytic sensor).

Safety first: Isolate the oven from mains and allow it to cool completely, especially after a self-clean cycle.

Step-by-step checks:

• 1. Identify sensor: Consult the service diagram (often behind the rear panel) to locate the second sensor (e.g. pyrolytic sensor or grill sensor).
• 2. Inspect wiring: Check the harness from this sensor to the control board for heat damage or pinched sections.
• 3. Measure resistance: Disconnect the sensor and measure its resistance at room temperature. Compare with the main oven sensor; they should be similar if both are NTC types. Infinite or near-zero readings indicate failure.
• 4. Replace sensor: Remove mounting screws or clips, withdraw the sensor, and install a genuine Hotpoint-Ariston auxiliary temperature sensor. Ensure good contact and correct routing.
• 5. Clear error: Restore power and test the relevant function (e.g. pyrolytic clean). The F10 code should clear if the sensor circuit is restored.