Yup, you have only two options. Replace the cooling unit or replace the fridge!
If you decide to replace the cooling unit, I would recommend David Force at RV Cooling Unit Warehouse in Memphis, TN.
Good luck, happy trails, and God bless!

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Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD