Marty,
I never like to be the bearer of bad news, but it sounds like your Prosine died. Ed is right, when he said that your next step is to call Xantrex. The problem with calling Xantrex is, that they have mediocre technical support at best, but they should be able to help you determine if your Prosine is dead, or not.
If your Prosine has an internal problem, Xantrex considers them non-repairable throw away units, and instead of repairing it, they will try to sell you another inverter. Before you buy another Xantrex, I would look at replacing it with a Magnum inverter, because they have a better reputation for dependability, customer support, and repair ability, in case there is a problem.
Gerald