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

Safety first: Use an oven thermometer rated for high temperatures.

• Measure actual temperature: Place an oven thermometer in the center of the oven. Preheat to 350°F and allow 15–20 minutes. Compare the reading to the set temperature.
• Adjust calibration: Many Summit electronic controls allow temperature adjustment (e.g., ±35°F). Refer to your manual to enter calibration mode and adjust up or down based on your measurements.
• Check sensor: If the error is large or unstable, test the oven temperature sensor resistance at room temperature (~1080–1100 Ω). Replace if out of range.
• Door gasket: Inspect the door seal for gaps or tears that could cause heat loss. Replace the oven door gasket if damaged.