Display shows F3 and oven will not heat or stops mid-cycle.

Safety first: Disconnect power at the breaker before accessing rear panels or wiring.

• Inspect sensor inside oven: Locate the sensor probe on the rear wall. Gently tug to ensure it is firmly mounted and not loose or broken.
• Access sensor wiring: Pull the range forward and remove the rear cover. Find the two-wire sensor harness. Check for breaks, burns, or disconnected plugs.
• Test sensor continuity: With a multimeter, measure resistance across the sensor leads. An open circuit (infinite resistance) indicates a failed sensor that must be replaced.
• Check connectors: Clean any corroded terminals and ensure the connector is fully seated on the EOC.
• Replace sensor: If open or out of spec, replace the oven temperature sensor with the correct Blomberg part.