Whirlpool Dishwasher Quiet Partner V Gold

Have a brand new Whirlpool Quiet Partner V Gold Series Dishwasher. Installed on existing lines 2 weeks ago. Has run 3 cycles perfectly fine. Now, will not run. You press Normal to start. Press Start/Resume. No sound of water running. Start light stays on approximately 10 seconds, then goes out. Any ideas? Thanks, Mark