My solution to the noisy fan was to take a $2 yard sale 12" box fan and set it on the shelf for the grill on the side of the trl. My shelf could set right below the frige vent on the side of the trl. I'd point the fan into the vent and set it on low. Once the box fan was on the fridge fan didn't come on again.
2012 Winnebago "Journey To Insanity" 40U
2008 Dakota Sport 4x4
2004 Subaru Baja - DW's
2006 Honda Shadow Aero - TOAD for now.