bCX1 controller will not start up, the CPU LED flashes 5 times and remains on steady.


After powering off, pressing the reset and Reset IP button a bCX1 controller still will not start up. CPU does not flash and controller will not respond to a ping.

Product Line

Andover Continuum


bCX1-CR-INF 9640

bCX1-CR 4040


The controller is connected to an Ethernet network that is in a broadcast storm condition.


Disconnect the Ethernet cable from the controller and it will start up correctly.

On a very busy network or under a broadcast storm condition the controller will protect itself as detailed in Lessons Learned Article #6893.

This scenario can occur if a patch lead is inadvertently looped back onto the same Switch/ Router.