F7 codes and continuous beeping. This is a common problem with that type of Amana control. The control panel has a design problem I think, and it gets dirty and worn over time. I have replaced mine once, and it happened again less than 2 years later. I took the control panel out, and inspected it. I found a web solution, that said to shim the control panel out away from the housing slightly because it rubs on the metal around the opening and damages the control board contacts. I could see little scratch marks on the plastic skin around the edge of the button area, so that made sense. I tried that, and it still did not work.
Mine seemed to be the timer control buttons that were going on and off. So, I took it out again, and actually peeled the control surface membrane off of the control board. No going back now, I thought. I got it off and looked at the control panel. It looked fine, but there was a lot of gunk and wear marks around the edge of the button area. I cleaned it up with alcohol swabs, and put the cover back on the board. All of the printed circuit looked fine.....no damage or broken contact points. It was also still sticky enough to go back on. I reinstalled it, and "bingo" no more problem. It has been fine for 3 months now. Yahooo! I think the adhesive on the panel membrane gets warm and melts a little, and then fouls the contacts under the buttons, or causes them to stick on.