I have a Destiny National Wheel-O-Vator, Model DH 20 hydro residential elevator. It faults out every time it comes off the door zone sensor, no matter which direction or floor. Also, the red LED on the top of the CPU does not illuminate. All OPTIS appear to be working correctly. Any help would be greatly appreciated! If anyone has a print to share for this unit, that would be greatly appreciated as well. Have a great and safe day.