I had a problem with my HWH jacks not shutting off about a year ago. The jacks would level the coach, but then continue raising the front of the coach. Coach Care fixed it under warranty. They replaced the control module.
The same thing happened a month ago. After the most recent trip, I found a wire with a connector on it dragging on the ground near the left front jack. It was the pressure sensor plug. I cleaned it and re-connected it, and now the jacks shut off like they are supposed to!
The wire was not hanging down when the jacks failed, so it appears it likely broke the electrical connection a while before it fell out.
If anybody has this condition, check the connectors at the top of the jacks to make sure there is a good connection before you take it in for service. Especially if it is out of warranty. It might save you some time and/or money.
'04 Alpine Coach 36' MDDS