Oven temperature is consistently too hot or too cold compared to a separate oven thermometer.

Safety first: Allow the oven to cool before accessing internal components.

Steps to try:

• Verify with thermometer: Place an accurate oven thermometer in the center of the oven and preheat to 350°F. Compare the reading after 20–30 minutes.
• Adjust calibration: Many BlueStar EOCs allow a temperature offset adjustment (e.g., ±35°F). Follow your manual to increase or decrease the displayed temperature to match the actual reading.
• Check sensor: If the offset required is large (>25°F), test the oven temperature sensor resistance at room temperature and replace if out of spec.
• Ensure airflow: Avoid blocking convection fans or vents with large pans or foil.