I'm having the same problem. I have two jack shaft openers in my shop and one of them quit working. I unplugged the opener and plugged it back in, and now the yellow and red lights flash and beep on my wall control. They flash quickly for a few minutes and then it beeps, and then when they flash again they flash slow. I've seen in trouble shooting if they flash slowly the control panel is not compatible with my opener, but they've been working for two years now. I don't know if something went wrong with the wall control panel that it's now working right or what. I also tried hooking up new wire from the opener to the wall control and it does the same thing. One comment said "the wires weren't secured", what do you mean by that? I'm trying everything before buying a new wall control. Thanks.