Yes, there is a fan in the rear of all Westy 3-way fridges. It is active in all
three modes, not just propane mode. It only comes on when the  fins on the back
of the fridge get hot. There is a temperature switch screwed to one of the fins
and this turns the fan on and off as needed. The fan MUST come on at least some
of the time or the fridge will never stay cool for long. Some of the fans are
pretty quiet but most are easy to hear when  you are in the back. If you never
hear this when camped, your fridge isn't operating properly.( or  maybe you
don't camp where it is quiet!)

Mark

Brian Walch wrote:

>
>
>                 I have only used the fridge in my Westy once. It was slow
> cooling but after a day of alternating between 12V, AC,  and primarily
> propane, it cooled pretty well. However, I never heard a fan come on -
> should I be able to hear a fan or feel a fan when the van is plugged in or
> running on 12V. I assume it doesn't run during propane usage.
>
>                 TIA.
>
>                 Brian
>                 '85 Westy