Oven temperature is consistently too hot or too cold compared to the set temperature (e.g., set to 350°F but measures 300°F).

Safety first: Use heat-resistant gloves when placing or removing an oven thermometer.

Steps:

• Verify with thermometer: Place an accurate oven thermometer in the center of the oven. Preheat to 350°F and allow 20–30 minutes. Record the average temperature over several cycles.
• Adjust calibration: Many Premier EOCs allow temperature offset. Press and hold Bake until the calibration mode appears (refer to manual), then adjust up or down (typically ±35°F) to match your thermometer.
• Check sensor: If the offset required is more than ±35°F, test the oven sensor resistance at room temperature. Replace if out of spec.
• Ventilation: Ensure vents are not blocked by foil or large pans, which can cause uneven readings.