Hi !
Welcome to IRV2! We're sure glad you joined the gang!
Lots of folks on here have replaced their fridge cooling unit with the Amish-built Dutch Aire unit sold by Dave Force with RV Cooling Unit Warehouse in Memphis. You may also need a new control board, which Dave can also supply. Here is a link to his website.
RV Cooling Unit Warehouse
You say "no circulation" but I suspect you may be seeing the "No Co" (no cooling) code? Several things can cause that.
Many folks have also replaced their fridges with residential units.
Good luck, happy trails, and God bless!
HAPPY NEW YEAR!
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD