Issue
Received error message indicating "Neuron application has stopped running. Reinstall the NXE application file."
"Service" LED on controller is solid red.
Environment
MNL family standard controller:
MNL-5xx,
MNL-10xx,
MNL-15xx,
MNL-20xx,
MNL-11xx,
MNL-13xx
Cause
MNL family standard controller Neuron processor application PROM has failed or has been damaged.
Controller installation manual states that if the Service LED is solid red, that the Neuron processor application is not running. The document also indicates that the controller is not field repairable because the Neuron application is not field replaceable.
Resolution
Replace the controller. The device is not repairable.