Ok, one of the problems is the height of the Chimmney, if you have it installed in the slide out then there are TWO grills in the side for the fridge Top and Bottom. The "Works" are in the bottom.
Since it's a 2021 Fridge I DOUBT the heat exchanger (which should be just below the top grill) is crudded up but.. Well... Possible
My RV-GIRL (she is a professional on-site RV repair type) Does NOT recommend a fan to help force more air up through the exchanger But I had a fan on mine for 15 years and yes... there was some build up. but not all that much, when we pulled the fridge
Had I remained in the RV for another 15 I'd have blown the crud out from time to time
If you look at a photo of the back side of the Fridge the heat exchanger is a bunch of fins at the top Like a Radiator, which is exactly what it is.
