Dont no about the amana f/f but most ive changed are external of the f/f
just follow the plumbing to f/f 🙂 , theres usually a reset in the instruction book , usually press 2 buttons for 5 secs ..
The Amana filters ive done recently have been inside fridge top right hand corner. Filter housing drops down and you just twist and pull the filter, water shuts off automaticly.