"One thing that we recommend is to plug the unit into the pedestal and let it go through it's checks BEFORE plugging your rig in and turning on the power."
Not necessary to wait. The unit will NOT apply power to your RV until all checks are made and everything is a go. There is about a 2 minute delay. You can hear the contactor pull in if you listen carefully.
That two minute delay is to protect your AC from starting under load if power is lost momentarily.
Jerry