The Dometic RM7030 is an 'absorption fridge'..........NO Moving parts (unless FANS have been added by previous owner....which is a good mod to improve draft especially IF fridge is in a slideout)
Absorption fridges are slow to cool down initially.
Freezer section has to get down to 10*F before food compartment can truly begin cooling down. Has to do with amount of cold ammonia vapor available to absorb heat from each compartment.....freezer is 1st in process
With fridge in 'AUTO' it will run off AC Power (priority source) .
No AC Power......fridge controls swap to 'GAS' (will swap back to AC when it becomes available again)
Manual mode...GAS. No swapping to AC
Here is a 'Service Manual' that covers:
*Installation (proper install critical for good performance----RV MFGs mess this up all the time)
*Operation.......Auto/Manual.......Standby
*Troubleshooting
http://rvrefrigeratorrepair.com/wp-c...ice-RM7030.pdf