While the fan is operating you may hear sounds like a mosquito flying around.
Samsung french door fridge fan making noise.
If your fridge is making a noise that stops once the fridge door is opened there are a couple of things to check before organising a service request.
When the refrigerator compressor starts up or shuts off it may make sounds similar to an ignition from a car engine.
Afterward the sound will decrease.
Still understanding why the refrigerator makes the noise you re hearing can help give you peace of mind.
The fan will stop when the refrigerator reaches the set temperature.
You can perform a manual defrost to get rid of the ice buildup and get rid of the noise for a while but only service will correct the original cause.
The noise is caused by ice buildup around the fan.