Pk,
The IntelliFlo screen should NEVER be blank. When controlled by the automation, it should say "Display not active" when not controlled by the automation it should show RPM or similar display.
As a test, go into the Service mode and see if the display is blank or shows RPM..
For the IntelliFlo to run by the automation, several things must happen..
The pump must know when and what speed to run. This is controlled by schedules and having speeds assigned to Circuits (usually Pool and Spa circuits, but it can be any circuit.)
A circuit with a speed assigned, must be on or active.
The RS-485 com port must be working.
As a test, can you turn anything on using your remote, like a pool light. If so the Com port is working.
The next thing to check is that you are in Auto and Pool or Spa mode.
Then ensure that the Pool and Spa circuits have speeds assigned.
Thanks,
Jim R.