Fill ice-maker with water and it will restart to work automatically.
Add a pinch of salt if using reverse osmosis water.
Clean the water level sensor screws with fine grit sandpaper.
Power off the ice-maker and check the interior for any obstructions or ice that could be blocking the ice pusher. Restart the appliance after 3 to 5 minutes.
While the ice-maker is turned off, recalibrate the ice-maker by gently pushing the ice pusher into the default resting position and then restart the ice-maker after 3 to 5 minutes again.
The water box motor is faulty and needs to be repaired/replaced.
Ice basket is full. Remove some ice.
Temperature inside is too low and only deactivates if above 10 degrees move to warmer area.
Use lukewarm water.
The voltage is too low.
Restart the ice-maker after 3 minutes to not damage the compressor.