Single red light at far right usually means there is a problem with the display circuit board communicating with the control module circuit board. This usually means one or the other is faulty & will need to be replaced. Strange it has happened after the Tech came & did the out of balance repair. Maybe he has not plugged them in correctly or may of done some damage when handling the boards. Either way, I would get him back to sort it out if you can find him as it may be expensive to repair.
Lincoln Appliance NZ
January 2009