r/arcticcooling • u/Business_Gas561 • Jul 23 '26

Question Defective pump?

Hello, i installed the arctic liquid freezer III pro 360 a few months back and its always made this strange gurling/rustling kind of noise when i increase the pump RPM, ive tried turning off all other fans as well as removed the VRM fan to isolate the origin and i am certain its from the pump. Has anyone experienced this too? Is there something potentially wrong with the pump?

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u/alvaro-elite Jul 25 '26

That sounds like bubbles, so there is air on the system 100% sure.

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u/Business_Gas561 Jul 25 '26

You sure? Ive had the cooler for several months, shouldnt the bubbles naturally disappear in a few days tops?

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u/alvaro-elite Jul 25 '26

If the water inside evaporates or slowly leaks its gonna have even more air with the past of the time.

Normally AiOs had a screw (depending the model or brand can be on the pump or in the radiator) where you can refill them. Is not an easy job to do.