This issue was with a refrigerator that we acquired with a house we bought. The freezer was cold, making ice well, overall doing great. The refrigerator was not cold however. I had this issue with our own refrigerator in the past, and it was related to the defrost fan not working and the coils freezing up. However this refrigerator's coils had no ice buildup. Doing some searching on the internet I was able to narrow it down to the damper between the freezer and refrigerator not opening correctly to allow cold air in. I chatted with someone on the Appliance Pros site, and reviewed the issue, they agreed with the probability, so I ordered that part. The installation was fairly easy, I found a video on YouTube that helped as well. Overall things went well!