Opal Cards Error Codes And What They Mean....... Can We Get Brochures for this?

One thing that we have discovered of using the Opal electronic ticketing machines is that, there are red lights and errors that come up that we may need a bit more education with.

Sometimes, it says try again and we don't. So I have  photographed all the error coeds that was on the window of the Mount Druitt train station guards room, so that we can all self-educated ourselves. This is so we  understand any red lights alerts we get when  going through the barriers.