Fridge not working

[Clarabunga]

Hi, My RM7401 fridge had stopped working, we last used this two weeks ago and all was well. Last week there was no cooling either on gas/EHU or battery when driving. The fridge has never worked on EHU on our drive because it’s so steep but has always worked on battery when driving and on EHU when on site. I’ve taken the fridge out snd turned it upside down for 24 hrs then reinstalled. There is power to the unit and all wiring from the power to the unit looks ok. The cooling unit cover us warm to touch when on EHU or gas. Any ideas