Help Library: Help Library: [LG refrigerator noise] A hissing noise or a water dripping noise is heard.

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<h3 class="sub-tit">Cold air flows through the evaporator inside the refrigerator, and at this time, frost forms around the evaporator.</h3>
<p class="info-desc">➔ After a certain period of time, defrosting (removing ice) is carried out to remove the accumulated frost, and at this time, when water from the evaporator touches the heater below, it vaporizes instantly and makes a noise.</p><p>
The heater operates to defrost the inside of the refrigerator at regular intervals.<br>
At this time, the internal temperature rises temporarily, and this process is called defrosting.<br>
So, the sound of water dripping is also heard from the ice melted by the heat.<br>
In addition, water may fall on the heater that generates heat and make a noise.<br>
This may sound as if water is touching a hot pot and evaporating [hissing], but rest assured as it is not a product defect.
</p>
<div class="img-only">
<img alt="the sound of water dripping when the ice melts by the heater" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=2ZsL0kubhngMzgnXyRc6A&amp;portalId=P1">
</div>

<h3 class="sub-tit">Does it make a hissing or gurgling noise?</h3>
<p class="info-desc">➔ These are natural sounds that occur when oil and refrigerant flow while the compressor operates inside the refrigerator.</p><p>
In order to operate various machines, including the refrigerator, without overheating, a refrigerant is necessary to lower the temperature inside the refrigerator.<br>
This refrigerant is in a liquid state, so it can make [hissing and gurgling] noises just as water flowing down a drain.
</p>
<div class="img-only">
<img alt="Bubbling~, Hissing~ when the cooling motor (cooler) is operated and oil and refrigerant flow through it" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=DRKSihJpofc2KsLiEbJcEQ&amp;portalId=P1">
</div>

<h3 class="sub-tit">Does it make a cracking, clicking and water dripping noise?</h3>
<p class="info-desc">➔ Cracking, clicking and water dripping noises are natural sounds made by plastic parts such as shelves expanding or contracting when the temperature inside the refrigerator changes.</p><p>
As the temperature changes, thermal contraction and expansion occur inside the refrigerator, causing a noise.<br>
It's the same principle that makes the instantaneous cracking sound when ice melts.
</p>
<div class="img-only">
<img alt="The crackling sound in the refrigerator" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=D64Le9J3TtuJ944F9ASw&amp;portalId=P1">
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<h3 class="sub-tit">Right after opening and closing the door fast, do you hear the air leaking sound like a hissing noise?</h3>
<p class="info-desc">→ When you open and close the refrigerator door, warm air from the outside enters and cools down so that the pressure inside the refrigerator is lowered temporarily.<br>At this time, when air escapes at the back, it may create a noise.</p><p>
Warm air from the outside meets cold air inside the refrigerator, creating a difference in the pressure inside the refrigerator.<br>
Air inside the refrigerator escapes through a vent at the back of the refrigerator, creating an air escaping sound.
</p>
<div class="img-only">
<img alt="When I open and close the refrigerator door, there is a hissing sound due to air pressure" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=PbIAf0KvdTeNw3olKKPA&amp;portalId=P1">
</div>

<h3 class="sub-tit">Does it make a rattling, thumping and humming noise?</h3>
<p class="info-desc">➔ Rattling, thumping and humming noises are the sounds of the cooling motor (compressor) or the fan when the refrigerator resumes operation after stopping, and when the temperature inside the refrigerator is stabilized, noises will be reduced gradually, just as when you start a vehicle, loud noise and severe vibration occur at first, but the noise and vibration gradually decrease after the engine warms up.</p><p>Also, [humming, buzzing, whizzing] noises may be heard in the process of producing cold air.</p>
<div class="img-only">
<img alt="humming sound when the refrigerator motor is running" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=k2BWJeFIjY1RMCKV355r0Q&amp;portalId=P1">
</div>

<div class="con-view">
Refrigerators are made up of many parts, and as they operate, they can make noises as they move.<br>
In addition, noise may be temporarily generated in the process of generating pressure differences as the refrigerant flows inside the refrigerator.<br>
This is a natural sound generated while the refrigerator is operating, and rest assured as it is not a product defect.
</div>
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<p class="help-txt">This guide was created for all models, so the images or content may be different from your product.</p></div>

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[LG refrigerator noise] A hissing noise or a water dripping noise is heard.

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