I have an Easy Touch controller and a waterfall circuit that has worked fine since the pool was new (6 years). Today the actuator stopped working. I figured a bad limit switch, as I've had to replace these in my other actuators, but that isn't the problem. Tested both switches and they work fine. If I disconnect the one that is tripped when the falls are off, the actuator turns, so I know the motor is good. Any ideas?