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Central IA | The can error the display is showing combined with the control module LED being red likely points to a filed Norac control module. Norac has two can busses one for the sensors and modules and a separate one for the display. The display is just a stand alone ISO display showing what the Norac module is sending to it, similar to an external computer display. All of the processing happen in the Norac control module and is displayed on the display. The screen you are seeing now is the display indicating it is not receiving a signal from the control module. On that system the valve module blinking twice indicates a Norac bus fault or that the valve module is not seeing other devices (like the control module). Generally speaking any Norac module with a red light is dead and will require replacement. You can speculate what caused that module to fail but the broken wires you mentioned could have lead to the module being shorted out or similar.
My troubleshooting steps would be to inspect all Norac harnesses along the boom, taking close care to inspect the boom fold points for pinched or damaged harnessing. Second I would disassemble each connection and visually inspect them for any signs of corrosion, water or pushed back/damaged pins. After checking all wiring I would replace the control module and proceed with a system calibration. During the calibration process Norac will confirm all needed components (Modules, height and roll sensors are present and communication) before calibrating the system.
Here are two videos on the Norac UC5 system, neither get into troubleshooting but give you an idea of what to expect after the system is repaired and calibrated. These are older videos so with software updates a few things look a little different but in general are very similar.
Norac UC5 overview: https://www.youtube.com/watch?v=ywhldlV7hco
Norac UC5 Calibration: https://www.youtube.com/watch?v=svtdZ_lkzWk
 (NoracFlashCodes (full).PNG)
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 NoracFlashCodes (full).PNG (91KB - 45 downloads)
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Hagie Norac UC5 problems
