I have a Dometic RM 2620 fridge, that won't cool. A squirrel got into wiring, I have taken care of wiring but will not work on gas or AC. Spark igniter will no spark either. Any ideas?

SOURCE: AC,DC, gas RV fridge Dometic

You more than likely need to replace the control cable between the upper and lower board. It comes as a kit with the upper board. You can also do a bypass test by unplugging your thermoster from the circuit board. The thermoster is the temperature control for the refrigerator nothing to do with the freezer.
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SOURCE: Dometic rm 2612. Shuts down on gas.

Ron;
Check the burner assembly. 1 screw, remove the sheet metal cover and clean it. The burner collects rust. This is the likely. Other issues would be the gas pressure usually checked with a manometer. Should 11" of water column. If your furnace works good then the gas pressure is probably ok. Also could have a faulty ignitor which sends a miliamp signal back to the circuit board. Check the burner first, after that leave the cover off and turn the fridge on. Watch the ingnitor attempt to lite the burner. Be sure the spark is going to the burner and not shorting out on the sheet metal it is mounted in. If it is shorting to the frame the ignitor needs replacing.
Thanks for using Fixya
Jerry

SOURCE: Freezer working, fridge isn't.

It is possible that your cooling unit is failing due to a blockage. The solution used to cool starts at the top of the fridge and works its way to the bottom. If there is a blockage in the cooling unit it could produce the symptom you have explained.

SOURCE: Camper fridge dont cool

I also had the same Model Make. I removed my fridge and placed it upside down, occasionally shaking fridge within a 24 hr period. This seemed to re-mix the ammonia solution and the fridge is working.
This may work for you but look for yellow stains if you see any your fridge is leaking and would require repair.

SOURCE: I have a Dometic RV fridge that wont get cold. it

It sounds like your cooling unit is going out. Here's a couple of things to check. Do you smell any ammonia when you open either one of the doors? When you look at the rear of the fridge, do you see anything that looks like rusty water that has run down any of the metal tubes and dried up? If the answer to either one of these is "yes", then youll need to start looking for a new fridge or replace the cooling unit on the one that you have.