I do not know how this coach's air system works. This has happened to me. My signature coach will not air up sometimes. For me, the fix that works every time is to raise the coach with the jacks, almost all the way. Start the engine. Wait about 15 to 30 seconds and store the jacks, with the engine running.
What I've been told happens is that sometimes the lever that tells the coach it is okay to put air into the bags gets stuck in a position that says the bags have the correct amount of air in them. By raising the coach, starting the engine and then storing the jacks, allows the chassis to move through the okay zone into the zone requiring air in the bags, while the compressor is running.
I have no idea if this will work for you, but it is easy to try and cheap if it works. My standard procedure is to start the engine first; then store the jacks. So far, no additional failures have occurred.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
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