Why LG Fridge Is Making Noise? 3 Common Causes

LG refrigerators make noises just like any other fridge brand does. But are all of those noises bad? Well, not necessarily. Some noises are part of the appliance’s normal operations. Still, you must be aware of those that point to a severe problem in the unit.

LG refrigerators make regular noises like the occasional popping noise and random rattling or shaking noises. Those kinds of noises don’t necessarily point to a problem. However, continuous knocking, buzzing, or beeping door alarm noises point to a potential problem. You’ll want to troubleshoot and resolve them quickly.

In this guide, you’ll learn about the most common noises that your LG fridge will produce. More importantly, you’ll discover which ones are harmless and which ones suggest you have a problem that must be repaired.

Why Is My LG Refrigerator Making Noise?

Your LG fridge can produce many different noises, and each one has a different cause. Let’s take a closer look at a few common noises, what they mean, and what you can do about them.

Continuous Knocking Noise

The affected part: When you hear a continuous knocking noise coming from your LG fridge, you’ll want to troubleshoot the evaporator fans. You’ll find them in both the fridge and freezer compartments, typically on the back panel.

An evaporator fan blows air through the evaporator coil, a section of your appliance’s cooling system. By doing that, the fan spreads cold air throughout the compartments, ensuring that all your food items are as cold as they should be.

What’s likely happening: The knocking noise you hear is likely due to buildups of ice or frost near the evaporator fan. When the buildup becomes big enough, the fan blades will continuously hit the ice as they spin.

The knocking noise will continue until the buildup becomes big enough to stop the fan blades from spinning at all.

What you can do about it: You can solve this problem by melting the ice buildup around the affected evaporator fan.

There are two methods you can use, which are:

  1. Turn off your LG refrigerator and leave the compartment door open until the ice buildup melts away.
  2. With the LG refrigerator still on, empty the compartment and place a pot of hot water inside. The steam from the pot will melt away the ice buildup. If the water cools down too soon, replace it with hot water and repeat the process.

Read: Why LG Fridge Water Dispenser Not Working?

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Occasional Popping Noise

The affected part: Any popping noises coming from your LG fridge originate from the appliance’s interior plastic panels. 

The popping noises can be soft or loud, but they’re unpredictable and only happen occasionally. The older your fridge is, the more likely these noises will happen.

What’s likely happening: The occasional popping noise you hear coming from your fridge happens because the plastic panels inside are expanding and contracting. The panels are experiencing what’s known as thermal expansion and contraction.

The panels will contract as the fridge compartments become colder inside, and they’ll expand when they become warmer.

What you can do about it: The occasional popping noise coming from your fridge is normal. It is not a sign of a problem, so there is nothing that you need to repair or replace.

Unfortunately, there’s also no way to minimize or eliminate the noise entirely.

Again, remember that the popping noise is more likely to happen the older your LG fridge becomes.

Read: Why LG Fridge Leaking Water?

Buzzing Noise Inside

The affected part: A buzzing noise coming specifically  from inside the refrigerator compartment points to an issue with the ice maker and its water supply.

Bear in mind that this is different from a buzzing noise coming from outside and behind the unit, which points to the compressor instead.

What’s likely happening: The buzzing noise you hear coming from inside the fridge happens when the ice maker doesn’t have a sufficient water supply. There is likely too little or no water being supplied to your fridge at all.

Normally, the water running through the ice maker would absorb that noise. However, a lack of water supply makes that noise much easier for you to hear from outside the appliance.

What you can do about it: You have two possible solutions for this problem:

  • Incoming Water Supply: Firstly, check the incoming water supply for your LG refrigerator. The shutoff valve should be fully open, and the hose should be free from any kinks and bends. Also, check that the water filter is not clogged as that could also slow or block water flow to the ice maker.
  • Turn Off Ice Maker: Alternatively, you can shut the ice maker off until you restore the fridge’s water supply. There’s a switch directly on the ice maker, which you can use to turn it off.

Read: Common LG Top Load Washer Problems

Door Alarm is Beeping

The affected part: When the door alarm starts beeping, you’ll need to troubleshoot the door, the door switch sensor, and the door seals.

What’s likely happening: The door alarm on your LG refrigerator will start beeping for two reasons. Firstly, it’ll beep if the door’s been left open for too long. 

That will also happen if the door switch sensor is faulty and the fridge mistakenly senses that its door is still open.

Besides that, the same will also happen if the fridge becomes too warm inside.

What you can do about it: Firstly, check that your fridge door is fully closed. If it was left open by accident, you’d need to give it some time to cool down inside. The alarm will turn off automatically when that happens.

Let’s suppose the door was closed, but the fridge was still warm inside. In that case, check the door seal for tears, rips, and holes. Any damage or excess wear could cause warm air to leak into the fridge, raising its temperature and triggering the door alarm.

Lastly, if the fridge is cold inside while the door and seal are in excellent condition, the door switch sensor is likely faulty. You’ll need to replace that sensor with a new one.

Read: 5 Reasons Why LG Freezer Is Not Freezing

Rattling or Shaking Noises

The affected part: Rattling and shaking noises can happen randomly or continuously. The sound’s frequency will give you a hint as to what’s causing it.

For example, the occasional rattling or shaking is likely from the normal flow of refrigerant or water through the unit, as well as food containers inside shaking.

Besides that, continuous shaking or rattling could suggest there’s an issue with the fridge’s placement on your floor.

What’s likely happening: As you’ve seen above, the occasional rattling or shaking noise happens as fluids flow through your refrigerator. That includes refrigerant flowing through the appliance’s cooling system. 

Those sounds can also happen as water flows into the fridge to supply the ice maker and water dispenser.

However, when the noise is continuous, your fridge is likely uneven on your kitchen floor. 

What you can do about it: There’s nothing you need to do for the occasional rattling or shaking noise because that happens as part of the fridge’s normal functioning.

However, you might need to adjust the fridge’s legs to ensure that it’s perfectly level on your kitchen floor.

Doing that will ensure that the fridge’s vibrations will go straight to the floor instead of generating rattling or shaking noises.

Read: LG Refrigerator Error Code DH F – Troubleshooting Guide

Bonus Tips

Here are a few more noise troubleshooting tips you can use with your LG refrigerator:

What Does A Normal Fridge Sound Like?

All working LG refrigerators will make some amount of noise. Normal sounds include some vibrating, shaking, and humming as the appliance runs. Occasionally, you might hear a clicking noise as the compressor turns on or off. However, loud noises that you can hear from outside the kitchen might indicate a problem.

When Should I Worry About My Fridge Noise?

You should troubleshoot your fridge when the noises you hear are louder than usual. If the noise doesn’t go away after a while, or if you can hear it from far away, you should begin checking the fridge.

How Do You Quiet A Noisy Refrigerator?

The best way to minimize noises from your refrigerator is to always ensure the appliance is in excellent condition. Firstly, be sure to troubleshoot and fix any LG fridge parts that aren’t working correctly. Next, shut off the ice maker if you’re not using it. Lastly, cleaning the compressor and its surrounding areas will also help to minimize fridge noises.

What Do You Do When Your Freezer Alarm Goes Off?

The freezer alarm goes off when it senses that the door has been open for too long or if the temperature inside is getting too warm. So, check that the door can close fully and the seal is in excellent condition.

Is A Noisy Fridge Dangerous?

Yes, a fridge that is too noisy can be dangerous. A faulty fridge could lead to a house fire if its components are severely damaged and left unrepaired. Besides that, a problematic fridge could fail to maintain safe temperatures for the food items inside, potentially leading to food poisoning.

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