This afternoon I shut off the battery and turned the converter back on. Within minutes, my DW turned on the water and when the pump kicked on, the converter clicked and started humming continuously. I shut off the pump and the couple of lights that were on and the humming would not stop. I think the converter is now dead.
I killed the breaker and turned the battery back on. I also hooked up the charger. It is charging now. Thankfully, we don't have any planned trips to worry about before I can get the new converter installed.
Thanks for the tip on the charging line. I will look into that.