I left my Samsung 9.7 cu ft refrigerator door open for approx 24 hrs and now it does not work?

Unplug it completely over night then plug it back in. what’s probably happened is, while the door was left open the compressor was going all out to bring the temperature down according to the thermostat. While it had no chance of doing that never the less it was trying and in doing so it built up an ice dam in the evaporator “A” coil and up to the circulating fan. You most likely you have all your stuff out of the fridge by now anyway so you have nothing to lose in trying this. This idea comes from experience, I had the same thing happen with my freezer and I thought at first like the others in figuring I had cooked the motor or some other related part. Turns out the noise was the circulating fan was clipping the top of the ice dam and I unplugged the freezer for the night. The following afternoon I plugged the freezer back in just for grins and all was fine. Tip; try to unplug the fridge and plug it back in on the same time of day that way you won’t mess up your defrost timer cycle.