Oven on Fagor range takes too long to preheat or never reaches set temperature.

Safety first: Turn off power before testing electrical components.

• Check door gasket: Inspect the oven door seal for gaps, tears, or compression. Replace if damaged.
• Verify elements: Ensure both bake and broil elements glow when preheating (some models use both). Test their resistance.
• Test sensor: Measure oven sensor resistance at room temperature and compare to specs. Replace if out of range.
• Calibrate control: Some Fagor controls allow temperature offset adjustment in the settings menu. Adjust according to the user manual if the oven is consistently off by a known amount.