Proper airflow will allow heat to reach all sides of the food. There should be at least 1 inch of space around each item in the oven. This is especially true for convection cooking.

Ranges may need to have their temperature calibrated after a while, or when you purchase a new one. You can use the calibration function to adjust the temperature up to 35°F (either higher or lower). First, choose a value to calibrate to, and then cook a trusted recipe and check the results. Repeat with different calibration values until you have the results you want.

• For ovens with a Settings or Options menu, Thermostat Adjustment can be found in the menu.

• For other models, press and hold two buttons (for example, Broil and 1) until the display shows ADJ 0, and then use other buttons to adjust the setting.

• Check the exact steps for your model in your user manual.

If you're in Demo mode, the display will show tESt (or tE 5t). Some models show a d on the display, or a D icon, and wall ovens with an LCD screen will show DEMO at the top of the display. When in Demo mode, the oven and cooktop will not heat (although a gas cooktop will still ignite).

Instructions to disable Demo mode are available in the user manual. If your manual is missing the instructions, contact us with your model number.

The oven will ignite and turn off multiple times while cooking to maintain the temperature.

If the oven does not ignite at all, light one of the burners on the cooktop and try heating the oven again.

• If the burners will not light, check if the gas is turned on for your home. Contact your gas company for further assistance if needed.
  
  

• If the oven heats up when a burner is lit, but not when the cooktop is off, then the gas pressure is too high. If the range was recently installed, contact a professional installer or your gas company for assistance.
  
  

• If the oven does not heat up when the cooktop is on, visit our Support Center to request service.

If you were to take thermometers from several different manufacturers and put them all in the same oven at the same time, their readings may eventually get to the same temperature, but some thermometers would get there quickly and some would take a while. This depends on what materials the thermometer is made from or what type of mechanism they measure with.

This doesn't mean the oven took that long to achieve the temperature; the thermometer took that long to measure it. And if the temperature in the oven changes quickly, the thermometer typically cannot keep up with the changes. These aren't highly accurate, calibrated devices, and should not be relied on for accurate measurements.

If you really want to measure the temperature in your oven and get an exact number, you will need to use a thermocouple to obtain an accurate measurement. However, we recommend letting the results of your cooking be your guide. Return and select our article for Oven does not cook well for more information and troubleshooting steps.

Ovens cycle on and off while they are being used, causing temperature fluctuations. For example, when a domestic oven is set to 350°F while cooking, it usually ranges between 330-370°F in order to maintain the average of the set temperature of 350°F.

This is a completely normal operation of the oven. The set temperature is an average of temperatures in the cycles. If the oven did not cycle off, then the temperature would continue to rise, which could overheat the oven or burn the food. This cycle method also helps save energy.

As mentioned in the previous reason, thermometers are typically slow to adjust to changes. It can be very hard, if not impossible, for a thermometer to give an accurate, consistent reading in this situation.