My ice maker stopped working. I tried hitting the test switch several times, nothing happened other than it beeped once. Finally got the test switch to work, which may have been after putting it in the Ice Plus mode. In the Ice Plus mode (which drops the freezer temp for 24 hours to produce ice more quickly), it seemed to work. After the Ice Plus mode ran through it's cycle, it went back to not producing ice. I usually have the freezer set to -3 degrees F. I hit the test switch several times again, nothing happened, other than a beep. I did also notice the feeler arm is all the way up, parallel to the ice cube tray, and will not move. After it made a batch in Ice Plus mode, it did move and functioned properly, but went back up to parallel to the ice tray postion and stayed there. I was told the feeler arm may be frozen. But, doubt that is the case if it was functioning properly in the Ice Plus mode. What could be the problem?