Typically, a washing machine hums while washing: sometimes quietly, sometimes loudly. While a slight hum is considered normal, a loud hum or unusual knocking noise signals a clear problem. To avoid making the situation worse, it's necessary to diagnose the machine and fix the problem. It's best to immediately call a professional service center, but you can also handle the problem yourself if you prefer. How exactly?
Is the noise normal or not?
First, we need to determine whether the audible hum from our LG washing machine exceeds acceptable levels. To do this, we'll need to consult the machine's operating instructions and review the maximum noise level. Typically, this manufacturer's models are equipped with a direct drive, so their noise level is typically between 50-60 dB.
A noise level of 50-60 dB isn't quiet, but it's not too loud either. However, only a professional repairman can accurately determine the noise level by ear. Ordinary users will need a special device – a noise meter – to take accurate measurements. If you find a Chinese-made model, it won't be expensive, but it will clearly show whether you need to worry about the outgoing noise.
Normally, an LG washing machine operates at a noise level of 50-60 dB.
When buying a sound meter isn't appealing, you can take a different approach and compare the audible sound with already measured noise levels. For example, 50 dB is typical for a typewriter or a standard human conversation. 70 dB is appropriate for a noisy street, 95 dB is what we hear on the subway, and 120 dB is what a jackhammer produces. Using these examples as a guide, it's easier to determine whether the hum is normal and, if necessary, begin diagnostics.
Why does the washing machine make too much noise?
Normally, an LG direct-drive washing machine washes almost silently, with the most noise occurring during the spin cycle, when it reaches 800-1200 rpm. However, if the washing machine starts humming even at startup, when the drum is barely spinning, there's a clear problem. One such problem is improper installation of the automatic washing machine.
When a washing machine hums during the first start-up, it's often due to the transport bolts not being removed. These fasteners are essential during transport, as they securely hold the drum in place, preventing it from loosening or deforming. However, before using the machine, they must be removed and caps inserted. Otherwise, the motor will try to spin the drum during startup, leading to disastrous consequences. Another common installation error is an uneven housing. Ideally, household appliances should stand on a level surface, but if this is not possible, then the feet must be carefully adjusted.
Many internal machine malfunctions can also cause noise during rinsing. These include:
Cracks in the tank. Replacement required.
The motor mount bolts are loose. They need to be tightened.
Loose fasteners on the counterweights and upper springs. Remove the top cover and check if the bolts are loose. If the blocks themselves are damaged, replace them.
Worn bearings. A loud humming noise is often caused by problems with the bearing assembly. Confirming this is easy: just spin the drum with the machine turned off and listen. If you hear a grinding or rattling noise, the culprit has been identified and the parts need to be replaced. To replace them, you'll have to disassemble the unit almost completely, including removing the drum. Next, we'll cut the drum in half, knock out the worn bearings, and install new ones. At the same time, we'll also install new seals, which are responsible for sealing and protecting the bearing rings. Reassemble the machine in the reverse order.
Another cause is a dirty or improperly fitted door seal. The rubber seal often rubs against the drum, creating rubber crumbs that cause a humming noise. Fixing this is simple: tape some fine sandpaper to the edge of the drum and run the rinse cycle. This cleans the area of friction, and the water rinses away any debris.
A foreign object has entered the tank
Let's take a closer look at the possibility of a foreign object getting into the tank. Experience shows that this is the most common cause of a loud humming noise. But beyond the audible discomfort, there are more serious consequences, including a tank leak.
The problem is that many metal objects, such as keys, bra underwires, coins, and "pulls," get stuck between the plastic drum and the washing machine's drum. The machine continues to run, and the stuck item rubs against the surface, puncturing plastic and even metal. The result is leaks, humming, and banging sounds.
Determining that the noise is coming from a foreign object is easy: you'll hear grinding, creaking, and humming sounds as the drum rotates throughout the entire cycle. The solution, of course, is to remove the item. To do this, remove the back panel of the washing machine, unscrew the bolts holding the heating element, and remove the heating element. Use a flashlight to illuminate the opening. Once you've located the keys or coin, insert your hand through it and hook it with pliers or fashion a hook out of metal wire.
How to avoid such problems?
Knowing what it could be makes it easier to take care of the machine in advance and prevent the occurrence of hum and vibration. You just need to remember a few simple rules for operating the machine. We are talking about the simplest recommendations.
Do not exceed the maximum permitted weight of linen.
Do not run the cycle several times in a row, giving the machine a rest.
Alternate between high and low temperature cycles.
Clean the machine regularly, especially the dust filter.
Carefully check the items loaded into the drum for any items forgotten in pockets.
Woolen clothing, as well as items with metal inserts and locks, should be washed in special protective bags.
If the water in your water supply is very hard, it must be softened using special means.
At the end of the wash cycle, run an “empty” cycle to clean the machine and remove soap scum from the surfaces.
After using the machine, it is best to leave the hatch door and dispenser open to allow air to circulate freely and prevent mold from forming on the surfaces.
If your LG washing machine is making a loud humming noise, you can't ignore this "symptom." Diagnosis is essential, otherwise the problem will only worsen and lead to irreversible consequences.
Typically, a washing machine hums while washing: sometimes quietly, sometimes loudly. While a slight hum is considered normal, a loud hum or unusual knocking noise signals a clear problem. To avoid making the situation worse, it's necessary to diagnose the machine and fix the problem. It's best to immediately call a professional service center, but you can also handle the problem yourself if you prefer. How exactly?
Thanks for the advice.
Thank you, very detailed 🙂
It feels like I bought a Zhiguli.
And if the hum appears occasionally, then what could it be?
Hello. Can I ask a question?