Both fans and the compressor seem to be working. Found the coil pretty iced over so there might not have been much air circulating through it. I assume there's an issue with the auto defrost. I unplugged it and let it melt and dry. Should I replace the thermostat before I put it back together? The door seals look good so I don't know why it froze up.

It's a whirlpool side by side.