My printer just stopped working. It seems like it's working perfectly, but it gives me an error whenever I move the Z-Axis (Error: Printer set into dry run mode until restart) then, the bed temperature appears to be at 293ºC when it's actually at 95ºC.
I suspect that the bed wires short-circuited since they got stuck behind the bed when the printer was moving Y-Axis to home (the wires blocked the movement). Since then, the error appeared.
I suspect that the controller board could have been harmed by the supposed short-circuit, but despite the error, I can move perfectly any axis; I can heat the bed and the extruder; I can extrude filament; it is just the error which doesn't let me print.
Printer: Anet A8 Desktop 3D Printer Prusa i3
Software: MatterHackers: MatterControl 1.7
Update: The bed temperature is stuck at ~95ºC, sometimes ~250ºC, even if I disconnect the sensor wires and restart the printer, so apparently, it's failing to read the bed temperature.
Try checking the wiring on your motherboard and all of the connections to your steppers. When I first had my printer, the z-axis didn't work because a wire was loose. I took apart the control box on my Di3 and made sure everything was firmly connected, and after that everything worked fine.