I'm guessing it is a Norcold? Go up to "Search" on the line that has User CP, Files etc. Type in Norcold. A ton of related threads with be listed.
Interested in why tech believes you should replace fridge rather than replace cooling unit. Our double door Norcold is approaching the age of yours. We stay on top of the PMs. The fridge looks great. But we are keeping a close eye on the chiller.
Doing pre planning research, came across Pines RV selling Amish built cooling units. Also a compression cooling unit they say retrofits.
Hurry home. Looks like the monsoon is setting up early this year.
Fair Winds and Following Seas