JennAir oven takes excessively long to preheat or never reaches set temperature (no error code)

Safety: Disconnect power before testing components.

• Check both elements: During preheat, both bake and broil elements may cycle. Verify both glow red. Replace any element that does not heat evenly.
• Test sensor: Measure oven sensor resistance at room temperature (about 1050–1100 ohms). Replace if out of range.
• Inspect door gasket: Check the oven door gasket for gaps, tears, or flattening. Replace if it does not seal tightly all around.
• Calibrate oven: Many JennAir controls allow temperature calibration (offset). Refer to the user manual to adjust the oven temperature up or down by up to ±30°F if actual temperature differs from setpoint.