ejdeitschman Report post Posted January 7 (edited) We bought a used 2020 Keystone Cougar 368MBI in 2020. It was practically new. In Aug 2022, we had the refrigerator replaced under manufacturer warranty because it would not stay cold. Now, 1/2023, the refrigerator is out again and would not stay cold. We called Dometic and they said the refrigerator is no longer under warranty because it has passed the 2 year warranty even though we just got a new fridge less than 5 months ago. We can’t figure why it is not staying cold. Does anyone have this issue with their Dometic refrigerator or know what could be the problem? We have model RM1350SLM. ~Jason Edited January 7 by ejdeitschman Share this post Link to post Share on other sites
dons2346 Report post Posted January 7 Welcome to the forum Jason. I moved your post here for better exposure Don Share this post Link to post Share on other sites
bm02tj Report post Posted January 7 Is problem on AC or LPG or both Share this post Link to post Share on other sites
wildebill308 Report post Posted January 8 I would be calling again. If they talk about it being out of warranty ask for a supervisor. Bill Share this post Link to post Share on other sites
rayin Report post Posted January 9 (edited) First do some homework. Go to bryantrv.com or MyRVwork.com and download the installation manual for your make/model refrigerator. Then closely inspect the installation in your trailer, measuring distances and angles. This is a fairly common problem with RV mfgrs. they appear to do what is quicker and easier vs exactly what the manual states. This results in poor cooling. In the meantime, consider adding a small 12V blower-type fan on the condensing coils pointing up the poorly installed chimney. Edited January 9 by rayin Share this post Link to post Share on other sites
jburnside Report post Posted January 10 I had to replace the cooling unit on my 2014 Dometic last year because it wasn't keeping cold. I noticed a yellow powder in the burner unit while troubleshooting indicating that it had leaked. The installer said you have to make sure you are in the bubble level during operation to ensure proper flow of the gasses within or it will pop the tubes. That said, I'd be looking at the chimney clearances as Rayin advised given that you are having the same issue after putting in a new unit. My repair tech said that he sees more chimney problems when the refrigerators are located in slide outs. Share this post Link to post Share on other sites
ejdeitschman Report post Posted January 11 (edited) Thank you for the insights. We will check things out…when the rain stops. 🙄😒 could be poor installation by the tech? We emptied the fridge but the temp remained at 50 degrees. I wiggled some wires in the back after this post and the temp has gone down to normal but it doesn’t stay 33/34 degrees consistently. It was 33 yesterday and 37 today. Let’s see where it goes in the next few days. 🤷🏻♀️ Edited January 11 by ejdeitschman Share this post Link to post Share on other sites
wildebill308 Report post Posted January 11 That is not that big of fluciation for that type refrigerator. One of the many reasons I went to a residential type. Bill Share this post Link to post Share on other sites
