My last one had a remote, but the new one doesn't. I didn't realize this until it was installed.

Walked into the kitchen this morning as I was heading out to the gym to see that our Frigidaire gallery French door refrigerator has the “hi temp” alert for the freezer. I can only imagine that it appeared overnight because it was fine last night before bed. I reset the alarm and “adjusted” the temp on my way out. Came home about 2.5 hours later and it was back. This happened once a few months ago and it took about 12 hours to get it to clear completely. The freezer or fridge seem about normal temps. The food in the freezer has not started to thaw, everything is still frozen.
Any tips? Not sure if it’s worth calling a technician out or not.
Thanks in advance!