Air Ride problem

Ugh, hats off to those with stock Panteras that can mostly just hop in the car and drive. But still the extre gizmos & such on modified cars are fun (when they work). Anyway, I posted here a few years ago about my suspension problem where we found it was this switch discussed in the link below that was not working well to allow the compressor to uptake air to the supply tank:
http://pantera.infopop.cc/eve/...581040936#6581040936

But now I am having issues that I am thinking may be something else. This time I turned the car on with my on/off kill switch as usual in the front trunk and I heard the air compressor operate right away for about a half minute (as it typically does sometimes if I have let the car sit a while). So to me it seems this switch in the discussion above is doing its job to get air to the reserve tank and shut off. I believe that is all this switch does in the discussion in the link above (fills the reserve tank with air automatically then shutts off).

But this time when I press the up switch to raise the car, the car will not raise up. This valve unit below is also part of the Ridetech system. So this time I am at a loss what to test. Even if I knew what to check, its almost impossible to get at from above due to it being so deep under the car, and going under the front of the car, well thats slammed almost to the ground. These photos were taken before when I had a chance to raise the car. Upside is that I like looking at the car sitting there in the garage. Anyone here have experience with these systems or what I may look for to test?

AirRide by JanDaMan, on Flickr
AirRide by JanDaMan, on Flickr
AirRide by JanDaMan, on Flickr