I have a Trane helical-rotary air-cooled liquid chiller faulting for low superheat. I was wondering what causes there might be for this and or things I could look into?

I highly suggest you look for a person who is completely trained in working on that style of chiller. I am not saying this to be a smart A$$ but incorrect adjustments on this style of unit can become a very expensive disaster. You were smart enough to ask about it so I am sure you are smart enough to know your limitations. Respectfully submitted.