Has your oven been baking up disappointment? You pull your perfectly timed cookies from the oven only to find them burned on the bottom and raw in the middle. An inaccurate oven temperature could be to blame. Before scraping your latest baking failure, determine if your oven’s temperature is really off with a few simple tests. This guide provides step-by-step instructions for troubleshooting issues with parts like the thermostat, heating elements, and more.
Step 1: Identify the Problem
Do you feel like your oven is not baking properly? An inaccurate oven temperature can lead to poorly cooked food. Before trying to fix your oven, you need to make sure the temperature is actually inaccurate. Here are some ways to test if your oven temperature is correct:
Use an Oven Thermometer
The easiest way is to use an oven thermometer.
- Get an oven thermometer from a hardware store or online. Make sure it can read high temperatures.
- Place the thermometer in the center of your oven and close the door.
- Set your oven temperature to 350°F and let it heat up for around 20 minutes.
- Then, check what temperature the thermometer reads without opening the door.
If the oven thermometer shows a temperature that is more than 25°F above or below 350°F, then your oven’s temperature is likely inaccurate.
Try the Sugar Test
Don’t have an oven thermometer? No problem! You can test your oven’s accuracy with just sugar and vegetable oil.
- Put one teaspoon of vegetable oil in a small oven-safe container.
- Add two teaspoons of white sugar to the oil. Place the container in the center of your cold oven.
- Set your oven to 350°F and let the sugar mixture heat up for 5-10 minutes once the oven beeps.
- Carefully take the container out after the time is up. If the sugar is melted and bubbling slowly, the temperature is accurate. If it looks the same or is burning, your oven temperature is off.
What Could Cause Inaccurate Temperatures?
If your tests show that your oven temperature is inaccurate, here are some possible reasons:
- Faulty thermostat – regulates temperature
- Heating elements not working properly – heat up the oven
- Temperature sensor failure – detects oven temperature
- Bad control board – controls all oven functions
Step 2: Check the Thermostat
The thermostat is an important part of your oven. It controls the temperature by telling the heating elements when to turn on and off. If it is not working right, your oven temperature will be inaccurate.
Let’s learn how to check if the thermostat is causing problems!
What Does the Thermostat Do?
- The thermostat senses the air temperature inside the oven.
- It sends signals that tell the heating elements to turn on when the oven needs to heat up.
- It sends signals to turn the heating elements off once it reaches the set temperature.
This cycle happens over and over to keep a steady temperature in the oven.
How Do I Check the Thermostat?
- First, carefully remove the back panel of your oven. This gives you access to the inside.
- Locate the thermostat, usually a silver cylinder, near the oven’s back wall.
- Disconnect any wires attached to it so you can remove the thermostat from the oven. Be very careful not to touch any other wires or parts.
- Test it with a multimeter or take it to an appliance repair shop for testing. They can tell you if it’s broken or not.
What If My Thermostat is Faulty?
If tests show the thermostat is faulty, then it needs to be replaced. Some signs it is broken:
- The oven does not heat up at all
- The oven temperature is very uneven
- Displayed numbers are way off from the real temperature
Step 3: Inspect the Heating Elements
Heating elements are crucial for your oven to heat up accurately. Problems with the elements can definitely cause inaccurate temperatures.
Let’s go over how to check them!
Why Are the Heating Elements Important?
- Heating elements are long metal coils at the top and bottom of your oven.
- When electricity flows through them, they heat up to high temperatures.
- This heat energy is blown throughout the oven by a fan to reach the set temperature.
So, the elements have to work right for the oven to maintain the correct heat.
How to Inspect the Elements
Checking the elements is easy to do:
- First, make sure the oven is completely cool and powered off for safety.
- Remove the bottom panel to access the lower heating element. The upper one is exposed already.
- Look closely at the coils for any breaks, gaps, or burnt/discolored spots. Also, check that they are still securely attached.
- Use a multimeter to test if electricity flows correctly through each element when the oven is on. Any reading outside the normal range could mean problems.
When Should Elements Be Replaced?
If your visual inspection shows damage or testing reveals issues, then replacement is needed. Signs it’s time include:
- Elements with visible cracks or burn marks
- Elements that don’t get hot anymore
- Reading of no continuity from a multimeter test
Step 4: Calibrate the Oven Temperature
If your oven still has inaccurate temperatures after checking the thermostat and heating elements, calibration is the next step.
What does it mean to calibrate your oven? Let’s find out!
What is Calibration?
- Calibration means resetting your oven’s internal temperature setting.
- It involves adjusting the offset number that the oven uses to reach the temperature you set it to.
- This allows it to fix any difference between the displayed and actual temperature.
How to Calibrate Your Oven
The steps depend on if you have a manual or digital oven.
For digital ovens:
- Locate the calibration or offset setting, usually in a service menu.
- Increase the offset number if your oven temperature runs cold. Decrease it if it’s too hot.
- Test the new setting with an oven thermometer to see if it fixes the issue.
- It may take multiple tries to find the right calibration.
For manual ovens:
- You’ll need to replace the thermostat with one that lets you adjust the temperature.
- Test the new calibrated thermostat until the oven reaches the correct temperature consistently.
Step 5: Troubleshoot Other Potential Issues
Sometimes inaccurate oven temperatures happen because of other problems not covered yet. Let’s discuss what else to check if your issue is still not fixed.
What Else Can Cause Temperature Problems?
- Faulty control board – controls all electrical parts
- Damaged door seal/hinges – leads to heat loss
- Bad ventilation – prevents even circulation
These don’t directly control temperature but still affect how accurately your oven can heat.
How Do You Check These Other Issues?
For an electrical problem, carefully inspect the control board and test components with a multimeter. Signs of failure are burnt spots or no continuity in tests. Only experienced technicians should replace control boards.
For an air leak, put a dollar bill between the closed oven door and seal. If you can pull the bill out easily at any point, heat is escaping there. The seal might need to be replaced.
Check your oven’s internal ventilation fan with a visual inspection. If it has broken blades or doesn’t spin well, that is the issue. Have an appliance repair shop replace the fan.
When to Get Professional Help
If you cannot find or fix the issue yourself:
- There may be other complex problems
- Hazardous electrical or gas work may be required
Also Read Gas Oven Broiler Won’t Heat: Top 5 Reasons and Fixes (With Video!)
Conclusion
We covered a lot of steps about fixing an inaccurate oven temperature! Let’s review the key points:
- Identify if your oven temperature is really inaccurate using tests like an oven thermometer
- Check parts like the thermostat and heating elements, which directly control the temperature
- Calibrate your oven to adjust the internal offset if needed to reach the right heat
- Troubleshoot other issues like the control board, seals, or ventilation
Finally, call an appliance repair expert if you cannot determine or fix the problem after trying these tips.
Having an accurate temperature makes cooking and baking much easier. Your dishes will turn out perfectly baked with an oven that heats evenly to the set number!