Is your oven making noise when it shouldn’t? Does it happen when it is turned off or on? In this article, we will see several solutions to solve the abnormal noise that could be coming from your oven.
There are not many causes of these unpleasant noises. However, they can be more or less important depending on the type of oven you have, the use you make of it and its age.
Remember that even if you are a handyman and you are used to repairing various appliances, you should always be careful when touching electronic components, because a domestic accident can happen quickly.
Don’t forget to unplug your oven before doing anything!
It is sometimes normal for your oven to make noise when it is turned off.
Many people worry about this, but it’s not necessarily a sign that there’s a problem.
Sometimes you just need to let the oven run normally and let it cool down.
In fact, the most common and likely reason your oven makes a buzzing noise when it’s turned off is the cooling period.
If you have been running the oven for a long period of time, the fan may continue to run when the unit is turned off. As long as it is connected to a power source, the fan may continue to run until the unit has cooled down completely.
How long will this last?
Each situation will be unique depending on how you used the oven during the heating or cooking period. In most cases, it will take between 10 and 20 minutes.
If it starts to exceed this time and/or makes too much noise, there may be an internal problem that needs to be addressed.
Different reasons why your oven may or may not make noise when it is turned off
The rotating heat propeller has a problem
The rotating heat propeller draws in the heated air from the different resistances of the oven allowing for even cooking. Screwed by a central nut, it can loosen with time creating a vibration noise.
To repair it, you will need to access the back of the oven and tighten the nut.
But the problem could be more significant than that. If the noise seems to be more than just vibration, your propeller may be damaged, in which case it will need to be replaced with a new rotary oven propeller.
The cooling fan has a problem
If you turn off your oven and hear noises, it usually means that your cooling fan is working.
The cooling fan (tangential fan), as you might guess, is for cooling. In fact, it allows your oven to come back to room temperature fairly quickly, thus preventing heat build-up and overheating of the oven. It only works when the oven is turned off in order to cool down the appliance quickly. If your oven is equipped with a cooling fan, you have probably already heard it in action.
If you hear strange noises after you turn off your oven, you would be right to think that the problem is with the fan. In many cases, it just needs a good cleaning and some lubrication. Unfortunately, since it’s located at the top of your oven, it can be difficult to reach and you’ll have to disassemble part of the oven to get your hands on it.
For safety reasons, make sure you have disconnected the unit from the power supply before beginning any repairs.
Examine the fan and replace it if cleaning does not stop the noise. Cleaning the burnt grease should do the trick.
If you have to come to a replacement, you can buy a compatible tangential fan here or you should be able to find the part on the manufacturer’s website.
The oven is making noise because of the mechanical clock
If the oven is making a rattling noise and it’s a model with a mechanical clock, that may be the problem. This usually happens after several years of use. Sometimes a cleaning or lubrication is enough, but in other cases, it is better to replace it.
There aren’t many ovens on the market with mechanical clocks anymore, and if yours is a fairly new model, it probably doesn’t have one.
Moving on, the cause of the noise when your oven is turned off could be due to a thermostat failure.
Your oven thermostat is not working
The thermostat in your oven is used to raise the temperature of the heating elements so that you can cook your dishes and desserts.
When you turn off your oven, the thermostat’s job is to regulate the temperature and cool it down.
In the simplest cases, you can reset the thermostat by pressing its red button. If the noise stops, you’ve solved the problem.
The thermostat cannot be reset
If your thermostat can’t be reset, or if the operation failed, you need to perform a continuity test on the thermostat terminals.
To do this, wait until your boiler is completely cool. Then, you must disconnect the connectors connected to the thermostat of your furnace.
If the value obtained is 0 Ohm, it means that your thermostat is defective. You have no choice but to change it yourself if you are a good handyman or to call a professional.
Take the opportunity to check that your oven is not stuck to the wall or that your built-in cabinet has enough opening to allow for proper ventilation. This will prevent overheating problems.
Check the switch
The switch powers the cooking mode you have chosen. It is therefore present on ovens that have a lever to select the different cooking modes.
You can already detect the failure if the cooking mode you have chosen is not respected during the use of your oven. Moreover, if the switch is defective, it will cause the noise of your oven when it is not in use, because it may trigger the cooling fan when it is not necessary.
To check if the switch is the cause of the annoying noises of your oven when it is off, you must start by checking that all the wires are connected and in good condition.
If you can’t see anything with your naked eye, I suggest you check the contacts one by one by turning the dial on each mode to make sure all the contacts are connected.
If the switch appears to be in good condition, then it is probably not the cause of the noise your oven makes when it is turned off. In this case, it may be the circuit board that is causing the problem.
Replace the circuit board
Once you have checked all the components and are sure that they are not the cause of your furnace’s noise, you should check the circuit board.
It could be a problem with the control of this board.
To check this, you should look for unsoldered, burned or blown components on the power board of your furnace.
You should see an anomaly with the naked eye. If not, check that the voltage is 230V at the input when your kiln is turned on.
If it is not, you need to change the board or have a professional come in to do it.
Buy a new oven
What if the solution was simply to buy a brand new oven?
Some people will say that’s too drastic a solution, especially if you haven’t given much thought to the noise problem.
Others will replace it because their oven is already too old anyway. It’s also possible that they don’t want to bother fixing it and don’t have time to waste.
Conclusion
I hope these suggestions and solutions for fixing your noisy oven have helped you.
In the end, you have 3 choices: find the source of the noise yourself and take care of the repairs, call a technician to do the work for you or replace your oven with a new one.
It is possible that another part is damaged, but that it is not accessible or repairable without specific knowledge or tools.