Welcome Brian. All the big wheels are at a Rally at some lush Casino in Nevada - so I will give it a shot.
Do you have an auxiliary compressor. Most pocket doors I have been around operate on the Auxialiary air system which is an independent compressor from the engine. Check and see if you have a breaker for air comp. or an independent switch to allow you to power it on. As a rule it operates a number of accessories in the coach such as floor slide, bed lift, some toilets. dump valves, generator air bags, air door lock, seat bolsters etc and the list goes on. I am not familiar with the Vantare but there are folks on the forum who are. So hopefully they will chime in with more specific directions to help.
Let us know where you are from and where you are going, we want a meal.
Welcome aboard
Roger and Micki Foster
Roger that!
2008 Liberty DS XL2
2023 Denali Ultimate
My 6th Prevost