7 reasons why the sub-zero refrigerator becomes loud?

HomeBlog7 reasons why the sub-zero refrigerator becomes loud?

When a refrigerator starts working loudly, most users get worried, and for good reason. It’s always better to call a technician for a diagnosis and fix the cause as soon as possible than to make it worse. If you ignore the change in the sound of your refrigerator, you are most likely waiting for the Oceanside refrigerator repair. But let’s get to the bottom of the causes.


Electrical malfunction


When you turn on your refrigerator noises, and what to do, you do not know. First, try to determine what exactly and at what point the sound occurs. If it is a humming noise, and when you pay attention to the light bulb there is a voltage sag, it indicates that there is a problem in the power grid.


The compressor, judging by its dimensions, is a very powerful asynchronous motor. Accordingly, it requires a lot of power to start up steadily, which is insufficient at the moment. The motor tries to enter the operating mode, but it fails, because the exit point is high on the characteristic. As a result, the power consumption is going on, but there is no exit to the mode. This process is accompanied by the hum and gradual heating.


It is possible to eliminate such sounds of refrigerator operation only by installing the network stabilizer. As a rule, such problems are not observed in the apartment sector. Sags and surges of power occur in a private or holiday village when the substation can not cope with the load and works in the mode of the strongest overload.


Transport bolts and compressor mounts


Often inexperienced owners have situations when a new refrigerator makes a loud noise for incomprehensible reasons immediately after switching it on. It can occur due to the only reason – the transport bolts and compressor fasteners have not been unscrewed. Every manufacturer clearly prescribes in the instruction in the most visible place that the refrigerator should stand for some time before first switching on immediately after transportation. The screws fixing the compressor and fan are unscrewed.


If these uncomplicated actions are not performed, the refrigerator begins to make sounds similar to different humming. The fact is that for the compressor and fan, vibration is normal during operation. Given that the elements are firmly attached to the body of the equipment, it begins to be transmitted directly to the large parts, many times intensifying.


Fixing the problem of loud compressor operation is done by unscrewing the shipping bolts. This will require a 10-wrench or screwdriver, depending on the model. Many of the bolts have large plastic holders.


Problem with the shock absorbers


Also, the refrigerator begins to work noisily after a certain period of service due to wear and tear in the shock absorbers. Most often these are rubber rings with a spring that absorbs the vibration created by the motors. There are such dampers under the fan and compressor. Over time, the rubber pads become stiff and the springs sometimes break. This breakdown is eliminated in the following way:


– It is necessary to unplug the refrigerator and turn it around to access the compressor.

– With the help of a wrench or a head 10 unscrew nuts fixing shock absorbers.

– Remove the old and in place install new shock absorbers.

– Bolt the nuts in place. Do not forget to lubricate the threads with graphite or other greases, so you can unscrew them another time.

– Similar manipulations are performed with the fan. All actions must be performed carefully so as not to tear the threaded connections.


Refrigerant overdose


If the refrigerator makes a lot of noise after its charges, the cause of loud sounds in its work can be an overdose of freon. During its circulation, compression, and expansion, pressure is created. If the refrigerant is more than necessary, it grows significantly, and because of this, connections can burst. An excessive increase in pressure is accompanied by an amplified sound, usually a crackling sound.


To eliminate the defect, when the refrigerator makes a loud noise, it is necessary to drain some of the freon, controlling its pressure in the system. Without specialized equipment can not do without, it can be rented. It is enough to connect only a blue manometer to control the pressure in the system. Connection should be made through the Schrader valve.


Clogged piping


If you began to feel a strong hum and vibration, which comes from the radiator or pipes. You may also feel the crackling of the plastic due to the pipes hitting it. This may indicate a clog in the pipeline, resulting from the accumulation of small fractions in one of the places of transition from small to larger diameter. To fix this defect it is necessary to purge the system with nitrogen and then re-fill it with freon. It will require special equipment, which can be rented.


Faulty electrical circuit elements


Sometimes the refrigerator is noisy due to a malfunction in the electrical circuits. In particular, crackling with hissing occurs as a result of bloating of electrolytic capacitors, which, in turn, occurs when the power supply unit fails. It can also be a trivial element defect. To fix the problem, it is necessary to repair the power board or the board. After that, mandatory diagnostics are required.


Psychological factor


The abnormal noise of the refrigerator is a reason to perform a comprehensive inspection of the device. It should be performed according to the nature of the sound because its source can be many elements. For example, the refrigerator thermostat is defective, due to which it is constantly gaining cold because there is no response signal to the compressor shutdown. In the process, there is a characteristic sound of freon circulation, gradually intensifying. It is important not to manically react to such defects, but to think rationally and act correctly.


If you can’t eliminate the cause of the loud noises when your refrigerator is running on your own, you can always turn to the skilled technicians at North Country Appliance Repair Company. We will fix the problem quickly and provide a warranty on our services.


Contact us


(442) 291-2244


[email protected]


Our specialist will perform the necessary repairs right in your home. We are pleased to offer a 90-day labor warranty to all customers after we repair an appliance.

Subscribe to our news, you will receive personalized discounts

Our specialist will perform the necessary repairs right in your home. We are pleased to offer a 90-day labor warranty to all customers after we repair an appliance.

Subscribe to our news, you will receive personalized discounts
©2024 Oceanside Appliance Service Center. All Rights Reserved.
Scroll to top