[Myvalk]

Recently got a new Yamaha acoustic electric guitar and it seemed as if the truss rod could be tightened up a little bit.( actually I wanted to get a little bit better action on the strings. ) So I went to tighten it thinking that it would get tighter and tighter and after a quarter turn it went totally loose. it did not snap or anything like that it just seems to have run out of threads.
My question is this, does the rod turn the opposite way to tighten? Or is something wrong? Or should I just bring it to a shop to have them set it up?