I bought a used machine that this same problem. Does anyone have advice how to fix it? I have RZNC-D5416 controller, would be thankful if anyone sent me manual how to use it.
'Now when I change any settings, the DSP goes to "Cutting OFF the power to restart" and when I switch off the DSP and connect again, it shows, Z-Hart Limit. its going on processing, what shall I do.'