This is a normal part of the boot up sequence when there is no flow computer C program installed. This will happen after a cold boot or if the RAM battery has failed and it has lost it's C program.

You will need to connect to the 4202 with RealFLO, install a flow computer and a configuration that has elements setup for the Display Module. The Display Module depends on how the flow computer is configured so if nothing is configured, it won't display anything.

Released for: Schneider Electric USA