What to do if Fault LED lights on Nordson Controller?
- Ggregory34Sep 22, 2025
If the Fault LED lights up on your Nordson Controller, it indicates a detected fault (communication, spray gun cable, RAM, or hardware). If you have an odd number of spray guns in the system, unplug the unused harness and install the jumper plug shipped with the console. Ensure the card is properly seated in the backplane. Clear all faults on the Alarm screen. If the problem persists, the card may need replacement.









