I have had a appliance professional come out and service, but he seems to be changing parts out instead of trouble shooting. So far he changed out the board behind ice and water in door, and the card in back, and the augar motor. The augar works but the door wont open. But while working on it the door opened twice (two different days) on its own like it was cycling. Then worked (after the 2nd time of cycling) for two ice dumps then quit again. I cant find how to operate the trouble shooting codes or electric flow chart that shows voltage. I appreciate all and any info you can give.