Generally speaking, the only noise that should be coming out of the air conditioner that you are using should ideally be restricted to the compressor. This is because of the fact that the compressor unit is pretty much the only piece of machinery that should be generating noise at all, if you look at your split unit you would notice that there really aren’t any components that would be making noise except perhaps the fan which at most would make a minimal amount of noise that you would barely be able to hear at any given point in time all in all.
The important thing to take into consideration here is that if your AC is making noises then there is a good chance that something is wrong with it. If you aren’t careful the problem that has occurred could end up building up by quite a significant amount, so much so that you would probably end up needing to get a brand new one if you don’t deal with this issue as speedily as you possibly can given the numerous things that you need to deal with on a regular basis.
One of the main reasons why your unit might be making noises has to do with the filters that it has. These filters are basically meant to take out dust and other particles and prevent them from entering your room. This matter builds up over time and subsequently starts to make noises because the air is being filtered through these small spaces.
Taking the filter out and giving them a good cleaning is the sort of thing that would end up making the noises stop completely, and you can visit network.aia.org/blogs/haris-saeed/2019/11/14/need-to-know-about-air-conditioning-maintenance to learn more.