HI Andrew

I have had this error code pop up when bench testing some new model zapi controllers. However you should be able to still access the control system with this error display. When switching the key on keep your fingers on the 2 buttons on the left or the 2 on the right on the console i am not too sure, but will allow access into the system.

I assumed it was reading alarm no communication, which is what tends to happen when the software does not match the one in the controller.