Thanks for that, speaking to Dometic they say you don't require a fan, I questioned them on that saying that I have an outside glass double door bar fridge which has two fans in it.
They came up an excuse, now I have to take it down to Brisbane and they are going to pull the fridge out and leave it in the workshop and use it and see how it operates.
I said to them that the operating temperatures in the workshop will be different from a caravan.
anyway I will see what happens. Friends were telling me on the weekend that some of the manufacturers are going back to 3 way fridges as they have become more efficient.
Warren