Side-by-Side Frig - WARM - Frigidaire

I have a Side-by-Side that stopped working correctly. I had it unplugged for a month or so, and now when I plugged it in it’s not cooling. It’s been set at 3 (manuf. recommended) and 6 (the max). The fan blowing on the coils (in the back) is blowing, the lights inside are working, the fan inside is blowing, the condenser is warm, but I didn’t notice it kicking on or vibrating at all. I’m used to fixing the "Fresh Food or freezer area is cool but not cold" problems. So I’m in new territory and don’t know where to start. I did vac out the coils just in case. The frig is visually in good shape, so it would be a shame if it’s not repairable at a small price.
Frigidaire FRS26KR4DB0

Suggestions?