the thing is that there are soo many different things that can cause the inactive message, from a simple intermittent relay, to a sticking air valve, a bad reading from a level sensor, etc. Good thing for warranty, let them read the fault memory to see what caused it... then they'll take it from there. It usually involves checking the electrical part of it for problems as well as the mechanical aspect of it. One piece of advise would be to get them to check the system for leaks, especially the bags. They have a habit of developing slow leaks over the years. Spray them with soap water and they usually have a solid ring show where the bottom of the bag folds onto itself. If the bags are leaking, let them get changed under warranty, only pays 2.2 hours labor for both of them.

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