Why does the refrigerator knock at night?

Couldn't sleep, and suddenly heard a loud knock in the kitchen at night? It happens, it's a refrigerator. Despite his good work, he suddenly begins to show himself in silence.

Let's figure out together what a useful kitchen unit wants to tell us with these knocks. And why does it do this at night?

Why is he knocking?

Often you can correct the situation yourself. But first of all, you need to establish the source of occurrence.

Thanks to the experience accumulated by professionals, we know the most common causes of extraneous knocking.

Simple reasons

• Became “old”. When establishing the origin of extraneous sounds, you should pay attention for the life of the refrigerator.
• Incorrectly installed. A knocking sound in a new household appliance may be due to its incorrect position. This reason is one of the most common. If the feet are not aligned, a loud vibration or knocking noise may occur. An unstable position may also cause the compressor to come into contact with other components.
• Overloaded. Sometimes this factor occurs due to the uneven distribution of food inside the refrigerator compartment. Overloading some shelves causes extraneous sounds. This reason is periodic.

Addition: Uneven arrangement of products may be caused by improper fastening of the shelves in the unit.

And this is already serious!

• Lack of internal lighting, appearance of snow deposits or temperature fluctuations indicate more serious problems. A possible factor in the appearance of sounds during operation is the loosening of the mounting fasteners that secure the compressor.
• A large amount of drizzle settles on the fan, which subsequently turns into ice. During operation, the blades touch the formed ice, which leads to tapping or grinding. The source of the problem is excessive snow. This may be due to incorrectly set temperature conditions or insufficient ventilation.

Help: a possible cause is also door depressurization.

• Evaporator malfunctions mainly occur on models with the No Frost function. Such household appliances have a built-in automatic defrosting function. With prolonged use, the evaporator begins to become covered with ice. This leads to the cessation of air circulation and the appearance of extraneous sounds.

What can be done?

If any extraneous knocking, grinding or clicking noises appear, you must immediately proceed to installing cause and its elimination. Quick action will help avoid the development of a malfunction and further failure of the refrigerator.

• First of all, you need to make sure that the household device is in the correct position. A visual inspection may not detect a problem, so a thorough inspection is recommended. If gaps appear between the base and legs, you should use a kind of backing to adjust the position of the refrigerator.

Note: modern models have adjustable legs, which makes the task much easier.

• If the shelves are overloaded or loose, the chamber must be completely cleaned. A thorough check of shelves and drawers will help correct errors. Products inside the unit should be placed evenly.
• The fan or evaporator most often fails due to the accumulation of a layer of snow on the surface. To fix the problem, the refrigerator should be emptied of food inside the chamber. Thorough defrosting will help get rid of the ice crust that has formed on the elements. Experts recommend leaving the refrigerator overnight to allow the snow and ice to completely remove from the surface.

Important: before performing the procedure, the device must be disconnected from the network.

If there is no progress after using the methods described above, you should consult a specialist for advice.

Why are knocks and noises at night?

Having determined the cause, we will try to eliminate it ourselves. If the knocking still continues, We contact the service for serious diagnostics.

There is only one question left: why do sounds appear at night? There is also an explanation for this, and a very simple one. In fact, extraneous noise occurs constantly, both day and night. But during the day they dissolve in other everyday sounds, music, conversation, etc. But at night, when most of the usual noises subside, we can clearly hear that the refrigerator is knocking, creaking, and reminding us of itself.