Why does my refrigerator make noise?

Quite often in the practice of an appliance repair service in San Diego County, there are refrigerators in which there is no cold in both chambers when the compressor motor is running. In this case, the malfunctions may be as follows.

 

Freon leakage (in single-compressor models) 

The refrigerator chambers are cooled due to the circulation of freon through a sealed circuit. The refrigerant is forced by the compressor motor into the evaporator. A thin capillary tube is installed in front of the evaporator. There is a pressure difference between the inlet and outlet of it. Due to this difference, freon boils in the evaporator (in models with No Frost) or in both evaporators (in conventional refrigerators with separate evaporators in the freezing and refrigerating chambers) and takes heat from the refrigerator. 

If there is a leak somewhere in the freon line, the refrigerant begins to escape from the system. Because of the drop in refrigerant pressure, the performance of the refrigerator decreases, and the temperature in both chambers rises. When the refrigerant completely evaporates from the cooling circuit, both chambers stop freezing altogether.

The most common leaks occur in the freezer perimeter heating circuit, evaporators, or piping connections due to corrosion.

 

Capillary tube clogging (in single-compressor models) 

The narrowest diameter tube in the cooling circuit is the capillary tube. After passing through it, freon enters the “wide” evaporator, where its pressure drops sharply. As a result, it boils and takes heat from the chamber., in addition to the refrigerant, there is machine oil from the motor compressor in the system. When the oil interacts with freon, kinds of paraffin are formed. They can partially or completely clog the capillary tube. As a result, the refrigerant circulation is disturbed, and with partial clogging, the refrigerator works, but both compartments do not freeze well; with full clogging, the compressor works, but both compartments in the refrigerator do not freeze at all.

 Compressor wedge or breakage of its valves (in the single-compressor models) 

 The malfunction is characteristic of refrigerators with long service life. Over time, the nodes of the motor wear out, which leads to mechanical breakdowns. The most popular ones are:

 

Compressor jamming is mechanical jamming of motor parts;

Deformation or damage of the inlet or outlet valves of the compressor motor.

In the first case, the motor hums strangely, but the freon does not pump, so both chambers do not cool. In the second, the compressor works as usual, but due to valve failure, it can not create the necessary pressure to cool the refrigerator, so both compartments do not freeze.

 The noise of the motor does not always mean that the refrigerator is freezing properly. If you hear that the refrigerator compressor works, but does not cool one of the chambers or both at once, it is better to seek help from specialists. The range of reasons why the appliances don’t work is very diverse.

 

The specialists at an appliance repair service in San Diego County repair refrigerators of all brands and years of manufacture. We come quickly to requests: the internal standard is no more than 24 hours after your request. Visit us at a time that is convenient to the customer. Apply, and we will put your refrigerator in order!

 

 

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(619) 719-5005

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