converter problem?

[party of 5]

I think I may have a short in the converter. It keeps blowing the 30AMP converter fuse in the electrical panel. The first time we were hooked to 30AMP service at an RV park and did not know there was a
problem until the battery was dead. Everything that works only on 110v worked just fine adn everything that works on 12v worked just fine, good thing I carry a battery charger with me. Yesterday I picked up the 5er from storage and it was blown again. It was not plugged into shore power while in storage. Any ideas or anyone think I am on the right track with the idea of a short in the converter itself. Any advise would be great.

[faeb and genb]

Most likely right. On the formed 5ver we had the converter went out twice. & It won't charge the battery when it goes.
Gene