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If your window air conditioner is making an unusual noise, the problem could be with the fan. It all boils down to the air conditioner having issues in operation or some parts.

Is Your Ac Is Making Noise Learn 5 Causes How To Fix Them – Minneapolis Saint Paul Plumbing Heating Air

If your air conditioner makes loud noise when starting or in operation, it can be extremely irritating.

Lg air conditioner makes loud noise when starting. As loud noises could indicate a motor problem, adding lubrication could be the perfect solution. That sound is a copland compressor plates rattling. If the noise starts to return shortly after you close the doors, then this noise is typically caused by frost buildup around the fan's housing which can be resolved by proper leveling and temperature adjustment.

This could be as simple as adding a little oil. That will also need replacing. If the charge is correct and the other unit is ok and it's in the attic space also with no noise then the compressor has a weak spring that holds the top plate down and until it runs for a very short time it rattles and settles in and runs the cycle ok then starts over again the next time the unit starts up.

When the air conditioner turns off, the pump loses momentum, which can cause it to knock against the case of the compressor and create a banging or slamming noise. Most of these sounds you can fix yourself. If the air conditioner makes loud noises when it starts up, it could be a faulty compressor motor or a broken fan motor.

That, or your motor may be in need of repair. Try adding sae 10 oil to the oil ports located in small holes near the bottom of the fan motor. Air conditioners have a fan blade in the front and a fan blade in the rear.

The louder the sound is, the more serious the problem could be. When starting up, they make loud, rickety noises that sound like the whole unit is bouncing back and forth. A creaking noise can also be heard in the ac or hvac system when the sheet metal ducts contract and expand.

There is also a second fan on the motor shaft that cools the condenser. Resolve the noise issues in window air conditioners by adjusting the fan speed & tighten the front grill of window ac or contact nearest authorized lg servic. Although rare, there are times a gasket or seal on your outdoor unit has an issue that makes it produce a loud sound when you start it.

A rattling noise can mean that your air conditioner is starting to deteriorate, and some of its parts are loosening. That’s why it makes a loud noise whenever you turn it on. If the blades aren’t rubbing against the housing and the fan motor is still noisy, check the blower motor bearings for wear.

Another cause could be twigs or leaves that have clogged your system. To get rid of the noise, you’d have to replace the whole compressor since it is a single, sealed part. Check both fan blades to ensure that they are not rubbing against the housing.

Causes for air conditioner making loud noises when starting or stopping. One or more of the fan blades might be scraping against the housing.

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