---- george jannini <georgejoann@GMAIL.COM> wrote:
> >> Whe I switch to Battery power while driving (or even sitting in camp as I have the aux battery) the fridge does not work. <<
>
>
>    The Dometic fridge was not designed to work on the 12 Volt setting
> when the bus is stopped.
>
>   The 12 Volt setting bypasses the thermostat and the heater is
> operating 100% of the time while consuming 7 Amps of current.

As wired from the factory, the refrigerator simply shuts off when the engine is shut down.  However, some folks with auxiliary batteries have wired in circuitry to allow the refrigerator to keep running of the auxiliary battery when the engine is off.  Others have not.  In those vans that came from the factory with an auxiliary battery, it was only for lighting, not for the refrigerator.  mcneely