It’s normal for your refrigerator to make a quiet buzzing noise when it is operating, but if the buzzing noise is loud and won’t go away, then this means something is broken.
Before you check the internal components, make sure the buzzing noise isn’t caused by something that is attached to the outside of your fridge, like a magnet. Sometimes they can cause a buzzing noise – but you’ve most likely ruled that out by the time you are reading this article. You also need to make sure that your refrigerator is “level” on the floor, as being unlevel can also cause a buzzing or vibrating noise.
If the buzzing noise is not caused by one of those two simple issues, then you need to start checking the internal components.
The first component to check is the compressor. The compressor helps to circulate refrigerant through the evaporator and condenser coils. If it becomes faulty, it can cause a loud buzzing noise to develop.
Here’s how to test the compressor:
The next step is to check the condenser coils. Sometimes they can get covered in dust and/or frost, and this can cause them to have to overwork. This can sometimes make them start to make a buzzing noise.
To check the condenser coils, you need to:
The purpose of the condenser fan is to circulate air through the condenser coils so that it can remove heat from them. It also helps to circulate air over the drain pan to help evaporate the water in it. If the fan becomes faulty, it can sometimes make loud noises when it is operating.
To check the condenser fan, you need to:
The next component to check is the evaporator fan motor. This component is responsible for distributing the air over the evaporator coils while the compressor is operating. If the loud buzzing noise is coming from your freezer, then the fan motor might be the cause of it.
Here’s how to check the evaporator fan motor:
The evaporator fan motor grommet isolates the fan motor from the mounting bracket, and it helps to stop loud vibrations and buzzing noises. Over time, it can become worn out or become detached, and this can cause loud buzzing or vibration noises to develop.
Here’s how to check the evaporator fan motor grommet:
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