Hi @crazycamper, I'm quite a newbie too but from my own experience of having problems with the fridge (& getting them sorted), here's a few questions:
Was the fridge working before?
Is the M/H on hook-up?
- habitation power switched on?
- fridge power switched on?
- gas connected & turned on?
- gas to fridge turned on?
- fridge switched on?
Fridge turned to correct selection or auto?
Have been having exactly the same problem but I'm in Spain/Portugal, been pulling my hair out.
Mine does however power up every now and again, usually for just a couple of hrs and then power off for as much as 5 days then mysteriously fire up again.
We have a dometic with aes, ( auto energy selection) circa 2012. When it failed it was the ribbon cable coming down from on/off button not properly seated onto the pcb inside black box at rear of fridge, accesable on ours through lower outside fridge vent. Had to remove black outer cover of pcb before I had access. The ribbon cable was grey, about 25mm ish wide if I remember ..... Good Luck