Some things I can’t repair. Prearranged, a RV repairman was here to look at my RV refrigerator. To my amazement, I properly assessed the problem last summer; no ventilation with this trailer under the roof. The ventilation problem has become compounded but the solution may be as simple as a fan blowing on the system. I have the assignment of checking the thermometer every three hours (and reporting same…) before turning on the fan. I quickly retrieved my fan from the cargo trailer and am prepared for “step number two.”
A lot of people use a DIY mod using computer fans, but there are also products made to help cool the back of the fridge. Here’s one example; https://www.ebay.com/i/181871185989?chn=ps. Another that comes with a thermostat. https://www.amazon.com/dp/B07F2K5GCW/ref=twister_B07F2JFT34?_encoding=UTF8&psc=1. Another, but intended to be used inside the fridge. A lot of people think they help a great deal: https://rvcoolingunit.com/Dometic-Evaporator-Fan-Greater-inside-Cooling-LED-Deluxe-wGrill-and-Light-P5444060.aspx. Anyway, lots of info on the various forums.