I had thought manual ignition of three-way absorption refrigerators had gone away. That's what I had in my 2005 Pleasure-way Plateau and elated with auto-ignition on my 2011 Great West Van Legend. Erip reminded me of the frustration of discovering a refrigerator warming up because it went off running on propane as well as the alternative of many times forgetting to take it off the DC during daytime stops and coming back to hearing a low battery chirping sound. It seemed you couldn't win either way. You learn to manage. One way was to put a remote digital temperature sensor in the refrigerator if you run on propane while driving so you could monitor from the cab.
If you want to buy a new B at the lowest industry price you have to understand there are reasons for that price, the refrigerator being one of many. That's a decision you have to understand.