On my Xantrex 458 there are DIP switches that must be set properly for the type of batteries that you have. These DIP switches are located BEHIND the Xantrex panel that you have in your coach. You have to take that information panel off to access the DIP switches. If you installed the exact same type of batteries, there should be no need to change the DIP switches.
I also had two circuit beakers for the output circuits that are located on the front of the Xantrex unit itself as well as a push button circuit breaker that controls the charger portion of the inverter/charger. Make sure that all have been reset.
