Oven heats but does not reach set temperature or takes excessively long to preheat

Safety first: Turn off power before removing panels or testing components.

• Verify temperature: Use an accurate oven thermometer placed in the center of the oven. Compare actual temperature to the set temperature after 20–30 minutes.
• Check elements: Ensure both bake and broil elements glow red during preheat. If one does not, test and replace as needed.
• Inspect door gasket: Look for tears, gaps, or flattened areas in the oven door gasket. Replace if damaged to prevent heat loss.
• Test sensor: Measure resistance of the oven temperature sensor at room temperature (~1080 Ω). Replace if out of spec.
• Calibrate control: Many Monogram ovens allow temperature calibration in the settings menu (e.g., +/- 35°F). Adjust if the oven is consistently off by the same amount.