It's prefilled and has a warranty on it. So may I know is there any matter with it? the cooler works fine at the moment.Is this a pre-filled water cooler or did you fill it up? It means that there is air in the loop.
It is normal for some air to be in any loop really. Just keep an eye on the temperature. If your temperatures are good, and as expected, than there is no issue with your cooler.It's prefilled and has a warranty on it. So may I know is there any matter with it? the cooler works fine at the moment.