Cayenne air suspension troubles

[Aj492]

I have done the air compressor refurb piston ring and o ring seal , and I have checked and double check everything is connect but when I start the car it cuts out after a minute and the air sus warning comes up in amber. I can select a ride height and the dash shows the car trying to move but no change In level at all could it be the valve body is knackered or contaminated. Air sus worked ok before I did the refurb although the amber warning flash up every now and again but level adjust worked fine. Driving me nuts now, help needed

[Maxheadroom]

did you get this resolved? i have a similar problem