Fridge runs fine on 12v and on gas and all other 240v appliances work as they should. When on EHU to the house and the fridge is switched to 240v the house RCD instantly trips out *. I suspect a short/fault in the 240v heater element. Can anyone advise the resistance of a good fridge heater element (or a busted one come to that but I suppose it with be either a dead short or infinite - open circuit). I've had a browse on t'internet but it seems the heater element is unavailable which I suppose means a new fridge if I can't get an element from a caravan breaker or use one from a similar fridge. It may not be the element so any other suggestions welcome. Going away to France for 2 weeks on Saturday next :-( Ta. *My electrician neighbour tells me that the house RCD trips before the caravan because the caravan RCD has a 40 millisecond delay built in by design whereas my house RCD (he rewired my house 3 years ago) is instantaneous.