A few days ago, the pump randomly started going off or not coming on during schedule. A flip of the breaker on and off seemed to solve the problem but not anymore. I traced everything out and confirmed the pump is getting power. The communication line is sending 1.8v and 2.4v signals to the pump, however the display does not come on. I switched the display/top cover to an identical pump on the two-pump system, and it works fine. I really hope it isn't the drive. Any other ideas or testing I can do? Thanks!