My LG Refrigerator Is Making a Knocking Noise

My LG Refrigerator Is Making a Knocking Noise (Details Guide)

A refrigerator is an essential appliance in any household, ensuring the freshness and longevity of our food supplies. However, when it starts making unexpected noises, it can be a cause for concern. One common issue that LG refrigerator owners encounter is the presence of a knocking noise. This unsettling sound can be indicative of various underlying problems within the appliance.

In this article, we will delve into the potential causes of this knocking noise, providing readers with a comprehensive guide on how to diagnose and potentially resolve the issue themselves. By understanding the mechanisms behind this phenomenon and employing some straightforward troubleshooting steps, LG refrigerator owners can regain the peace and quiet they expect from their kitchen appliances. 

New York Times Reviewed Top 2 LG Refrigerator

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LG LRFLC2706S 27 Cu. Ft. French Door Smart Refrigerator

LG LRSDS2706S 27 cu. ft. Side-By-Side Door-in-Door Refrigerator

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Brand New Refrigerator Makes Knocking Noise

If you’ve recently purchased a brand new refrigerator and it’s making a knocking noise, it can be understandably concerning. There are a few potential reasons for this, and it’s important to address the issue promptly to ensure that your new appliance operates smoothly. Here are some steps you can take to investigate and potentially resolve the problem:

Check for Transportation Bolts

Many refrigerators come with transportation bolts that are meant to secure the compressor during shipping. Forgetting to remove these bolts upon installation can lead to knocking noises. Refer to the refrigerator’s manual to ensure all transportation bolts have been removed.

Verify Leveling and Placement

Ensure that the refrigerator is properly leveled and placed on a stable surface. An uneven or wobbly surface can lead to noises, including knocking sounds.

Defrost Cycle Operation

Understand that it’s normal for a refrigerator, even a new one, to go through defrost cycles. During this process, you may hear some unusual sounds. However, if the knocking noise persists even outside of defrost cycles, further investigation is needed.

Contact Customer Support

If none of the above steps resolve the issue, especially if it persists for an extended period, consider contacting the manufacturer’s customer support. Since the refrigerator is new, it should still be under warranty, and they may provide specific guidance or arrange for a technician to inspect and resolve the problem.

LG Refrigerator Ice Maker Knocking Noise

If you have an LG refrigerator with an ice maker that’s producing a knocking noise, there are a few potential causes to consider. One common issue is that ice cubes may be getting stuck in the ice maker’s mechanism, causing it to produce unusual sounds. 

To address this, start by locating the ice maker within the freezer compartment. Carefully inspect the ice maker for any signs of ice buildup or obstructions in the chute or around the moving parts. If you find any jammed ice cubes, gently remove them, being cautious not to damage the ice maker components. 

Once cleared, allow the ice maker to run a cycle to ensure it operates smoothly. If the problem persists, it’s recommended to consult the refrigerator’s manual for specific troubleshooting steps or contact LG’s customer support for further assistance. Additionally, periodic maintenance of the ice maker, such as regular cleaning and ensuring proper water supply, can help prevent future knocking noises.

Common Causes of Knocking Noises

Typical LG Refrigerator Knocking Sound

A typical knocking sound in an LG refrigerator often resembles a series of sharp, rhythmic taps or knocks. It’s akin to a repetitive thudding, distinct from the usual hum or occasional clicks associated with a refrigerator’s operation. 

This sound typically occurs intermittently and may last for varying durations. Understanding the characteristics of this knocking sound is crucial in pinpointing its source and subsequently addressing the underlying issue. 

While it may be disconcerting to hear, identifying this distinctive knocking sound is the first step towards a resolution, allowing owners to restore their refrigerator’s normal operation and quietude.

Abnormal LG Refrigerator Knocking Noise

An abnormal knocking noise in an LG refrigerator is a cause for concern, as it deviates from the typical sounds associated with normal operation. Unlike the routine hum or occasional clicks, this noise is characterized by sharp, irregular thuds that emanate from within the appliance. 

It is not a consistent background noise, but rather an intermittent disturbance that can be quite noticeable. Recognizing this unusual knocking sound is crucial in identifying potential issues within the refrigerator’s components. Addressing this abnormality promptly is essential to ensure the appliance continues to function efficiently and quietly, preserving the integrity of both the food stored inside and the overall kitchen environment.

New York Times Reviewed Top 2 LG Refrigerator

Name

LG LRFLC2706S 27 Cu. Ft. French Door Smart Refrigerator

LG LRSDS2706S 27 cu. ft. Side-By-Side Door-in-Door Refrigerator

Image

Nytimes Reviews 

Winner

Runner Up

Price

How to Fix Refrigerator Knocking Noise?

Now that we’ve identified potential causes for your refrigerator’s knocking sound, let’s delve into troubleshooting steps. If the noise doesn’t align with the typical patterns, follow these steps to address the issue:

Ensure Your Refrigerator Has Enough Clearance

Adequate clearance around your refrigerator is essential for its optimal performance. This clearance allows for proper air circulation, preventing overheating and ensuring that the compressor functions efficiently. 

Start by checking the space around your refrigerator. Ensure there’s at least a few inches of space between the appliance and the walls or cabinets. If the refrigerator is too snugly fit or surrounded by clutter, it can restrict airflow, potentially causing the knocking noise. By creating ample clearance, you provide your refrigerator with the breathing room it needs to operate smoothly, reducing the likelihood of any unusual sounds.

Inspect the Evaporator Fan for Obstruction

The evaporator fan plays a crucial role in circulating cold air throughout the refrigerator. However, if it becomes obstructed, it can lead to unusual noises. Begin by locating the evaporator fan, typically found in the freezer compartment. 

Gently open the freezer door and look for the fan, usually situated near the back. Check for any visible obstructions, such as ice buildup, food packaging, or other debris that might be impeding the fan’s movement. Even a small obstruction can cause the fan blades to make contact with foreign objects, resulting in a knocking noise. 

Carefully remove any obstructions you find, being sure not to damage the fan blades or any surrounding components. Once cleared, run the refrigerator and listen for any improvement in the noise. This simple step can often resolve knocking sounds associated with an obstructed evaporator fan.

Check the Evaporator Fan for Damage

If your refrigerator continues to produce a knocking noise after inspecting for obstructions, it’s essential to examine the evaporator fan for potential damage. Over time, wear and tear can lead to misalignment or bent blades, causing the fan to strike against its housing. To perform this check, first, ensure the refrigerator is unplugged for safety. 

Locate the evaporator fan, typically located in the freezer compartment. Carefully inspect the fan blades for any signs of warping, bending, or misalignment. If you notice any damage, it’s crucial to replace the fan to restore proper functionality. You can refer to the refrigerator’s manual for specific instructions on fan replacement or consult a professional technician for assistance. 

Remember to plug in the refrigerator only after confirming that the fan is in good condition. This step addresses potential issues with the evaporator fan, which could be the source of the knocking noise.

Examine the Condenser Fan for Dirt Obstruction

The condenser fan, located at the back or bottom of your refrigerator, is responsible for dissipating heat generated during the cooling process. Over time, dust and debris can accumulate on the fan blades, impeding its ability to function efficiently and potentially causing knocking noises. 

Begin by unplugging the refrigerator for safety. Next, access the condenser fan by removing any back or bottom panels. Inspect the fan blades for any visible buildup of dirt or debris. Using a soft brush or a vacuum cleaner with a brush attachment, carefully clean the blades, ensuring they are free from any obstructions. 

Once cleaned, replace any panels and plug the refrigerator back in. This simple maintenance step can often eliminate knocking noises caused by a dirty condenser fan, allowing it to operate smoothly and quietly.

Inspect the Condenser Fan for Damage

If your refrigerator continues to produce a knocking sound, even after ensuring there’s no obstruction, it’s crucial to closely examine the condenser fan for signs of damage. Over time, wear and tear can lead to misalignment, bent blades, or other forms of deterioration. To do this, first, unplug the refrigerator to ensure safety. 

Locate the condenser fan, usually positioned at the back or bottom of the appliance. Gently examine the fan blades for any visible signs of warping, bending, or other forms of damage. If any issues are detected, it’s imperative to replace the fan to restore proper functionality. Refer to the refrigerator’s manual for specific instructions on fan replacement, or seek assistance from a professional technician. 

After confirming the fan is in good condition, plug in the refrigerator and monitor for any improvement in the noise. This step addresses potential issues with the condenser fan, which could be the underlying cause of the knocking noise.

Clean the Condenser Coils

Over time, dust and debris can accumulate on the condenser coils, located either at the back or bottom of your refrigerator. This buildup can hinder the coils’ ability to dissipate heat efficiently, potentially causing the compressor to work harder and produce unusual noises, including knocking sounds. 

To address this, begin by unplugging the refrigerator for safety. Locate the condenser coils and use a soft brush or a vacuum cleaner with a brush attachment to gently remove the accumulated dust and debris. 

Take care not to apply excessive pressure, as the coils can be delicate. Once the coils are clean, replace any panels that were removed and plug the refrigerator back in. This straightforward maintenance step can often alleviate knocking noises caused by dirty condenser coils, allowing your refrigerator to operate more quietly and efficiently.

Check the Ice Maker for Ice-Jamming

If your LG refrigerator is equipped with an ice maker, ice-jamming can be a common culprit behind knocking noises. Ice cubes that become lodged in the ice maker’s mechanism can cause it to produce unusual sounds. 

To address this issue, start by locating the ice maker within the freezer compartment. Carefully inspect the ice maker for any signs of ice buildup or obstructions in the chute or around the moving parts. If you find any jammed ice cubes, gently remove them, being cautious not to damage the ice maker components. 

Once cleared, allow the ice maker to run a cycle to ensure it operates smoothly. This simple step can often resolve knocking sounds associated with ice-jamming, restoring your refrigerator’s quiet operation and ice-making functionality.

Call a Pro to Fix a Water Hammer

If you’ve gone through the previous steps and the knocking noise persists, and you’ve ruled out issues with the fans, coils, and ice maker, it’s possible that the sound you’re hearing is a water hammer. This occurs when the flow of water is suddenly halted, causing a shockwave through the pipes. In refrigerators, this can happen when the water supply to the ice maker or water dispenser is abruptly stopped.

Addressing a water hammer in a refrigerator typically involves adjusting the water supply lines or installing a water hammer arrestor, which absorbs the shockwaves. This is a task best handled by a professional plumber or appliance technician with experience in water systems.

Calling in a pro not only ensures the issue is properly diagnosed and fixed, but it also helps prevent any potential damage to the refrigerator or plumbing system. They have the expertise and specialized tools to tackle this problem effectively, providing you with a quieter and smoothly functioning refrigerator in no time.

FAQ:

Why is my LG refrigerator making a knocking noise?

A knocking noise in your LG refrigerator can be attributed to various factors. Common causes include the defrost cycle operation, issues with the compressor, uneven placement or leveling, and potential problems with the icemaker.

Is it normal for a refrigerator to make knocking sounds?

While some noises are normal during a refrigerator’s operation, persistent or unusually loud knocking sounds may indicate an issue that requires attention.

How can I determine the source of the knocking noise?

You can start by observing when the noise occurs and which part of the refrigerator it seems to be coming from. Additionally, you can follow troubleshooting steps to pinpoint and address potential causes.

Can I fix the knocking noise myself?

Depending on the cause, there are DIY solutions you can try, such as adjusting defrost cycle settings, inspecting fans for obstructions, and cleaning coils. However, if you’re unsure or the issue persists, it’s advisable to seek professional help.

What if the knocking noise persists after troubleshooting?

If the knocking noise continues even after attempting troubleshooting steps, it’s recommended to contact LG’s customer support or a certified technician for further assistance.

Is my refrigerator still under warranty if it’s making a knocking noise?

If your refrigerator is within the warranty period, it’s likely covered for repairs related to unusual noises. Check your warranty documentation or contact LG’s customer support for specific details.

How can I prevent future knocking noises in my LG refrigerator?

Regular maintenance, such as cleaning coils, ensuring proper leveling, and monitoring for ice jams, can help prevent potential sources of knocking noises. Additionally, promptly addressing any issues that arise can prevent them from worsening.

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Jane Francisco

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