Latest update. I tried to get an appt with Sportsmobile Austin to check the electrical and Starcool system but have called several times and not been able to get them to call me back. I took it to a good RV shop locally that I've had other RVs worked on. They did not think the isolator was the problem but were not exactly sure. They reconnected the isolator and noted that the breaker kept clicking and tripping(there is a 50 AMP breaker between the isolator and the connection to the house battery). We replaced the breaker and it seemed to run okay in a test drive. This unit also has a large house battery (1100+ cranking amps). I think the previous owner replaced a dual battery with this large one. Don't know if a bad breaker could have caused the problems causing the alternator/battery to fail. I just know that the previous owner had some problems with the fuses/breakers tripping, etc. when having the Starcool worked on recently. Just don't know the specifics of the issues.
My thoughts are likely the Starcool running while driving combined with a very large house battery and the other stuff like large amplifier installed by the prior owner is just too much for the alternator. Sure hope it doesn't fry my new alternator and battery by reconnecting the isolator. Not much of a choice though as you have to run the Starcool while driving or it causes pooling and other issues with the van AC. Anyone have any issues by not running the Starcool AC while driving to keep from pulling too much power from the alternator?
I don't think I could run the Starcool for very long while driving without it running down the house battery if the isolator was not charging the house battery while driving. I assume the Starcool is pulling from the house battery as well while driving but am not too sure. Anyone know?
I'm going on a trip tomorrow so wish me luck.