Ice makers in refrigerators can often times get clogged with mineral deposits in the water lines. Forgetting to clean these can cause the ice maker to work harder making it more susceptible to wearing out. This problem can also cause the ice maker to produce less ice cubes and create a potential for a leak to occur, potentially damaging not only the ice maker but the refrigerator and the contents themselves.
Refrigerators often times have automatic ice makers. The basic components include a water line, a mechanical unit inside the freezer that briefly allows water in, an ice cube mold, and a method of dispensing the ice into your bucket.
You should really check the specific user’s manual for your specific refrigerator to know how to troubleshoot and clean your system if ice production is not working efficiently.
But we found a great overview video that explains how this works from Appliance Assistant.