Hayward 3400 : Communication failed check wiring between display and drive

My pool pump stopped working today. It is a Hayward 3400 SVP. The error code i am getting is.

Check System communication failed check wiring between display and drive

Anybody got any advice. I haven't opened the unit in a while, so I don't think something all of the sudden became unplugged. I did open after error, and the communication wire appears to be seated fine. I did reseat 3-4 times, but still getting same error.

thanks in advance!