Should be silent bro. If anything try gut it out & see if it still clicks.. once it spits out the 1st 30 seconds it'll auto shut for another 30 seconds while it balances itself out then in less than a minute it'll run but shouldn't hear a sound. If it's still doing it just swap it back for a different one g'luck.Is it normal for my fx6 to make a noise? It’s kind of a click but also sounds like it involves air if that makes sense. Sometimes it sounds a bit like small rocks gently hitting plastic but in water.