Oven temperature is consistently too hot or too cold compared to the set temperature.

Safety first: Use proper oven mitts when placing or removing thermometers from a hot oven.

• Verify with thermometer: Place an accurate oven thermometer in the center of the oven. Preheat to 350°F and allow 20–30 minutes. Compare the reading to the set temperature.
• Control calibration: Many American Range models allow temperature offset adjustment in the user settings. Refer to the manual to adjust the oven calibration up or down (e.g., ±35°F) to match the actual temperature.
• Sensor check: If the offset required is large (>35°F), test the oven sensor resistance at room temperature. Replace if out of spec.
• Airflow: Avoid blocking convection fans or vents with large pans or foil, which can cause uneven readings.

Note: Always test temperature with the oven fully preheated and stabilized.