I got the exact same problem as @mandabalu and was frustrated to find that I could not find an "easy" fix without programming the PIC micro. In test-mode, every actuator worked fine (even the infuser motor) and like @mandabalu I measured all sensors. I remembered that before I got this problem, the machine wanted me to push "next" and "change" concurrently to move the infuser. This actually caused the problem in my case since it was mechanically blocked (I assembled the machine incorrectly). I f…