re: Samsung Fridge

If it is a water hammer noise, it can be a couple different issues. Mine had the same issue and it drove me crazy for years as it would come and go. So there are a couple different valves that will get stuck when hard water causes buildup. You can change out the inlet valve on the back of the fridge which did not work for me. My issue was the valve(s) on the filter housing which is about $175 to replace yourself. I chose to buy an external in-line water filter and tape it to the back of the fridge. When you remove the interior fridge filter, the water will bypass the valve(s) on the housing thus preventing the hammer noise. Hope this helps.

In line filter I used:

LINK