Progressive Dynamics Inc Converter blowing battery fuse

Sounds to me like a bad situation.
We have had lots of different RV's and have not missed to many trips. Now having said that we have spent some time in garage parking lots waiting for repairs while we were travelling, but overall with everyday maintenance we have spent the last twenty years in an RV and all in all it works well.
the tent.....well we did get away and it the middle of a thunder storm in the middle of the night, the air matresses were floating. Have not had that problem in the rv.