The answer to 'why is my garbage disposal frozen' is that the disposal is likely jammed or clogged, preventing it from spinning freely. This can happen due to food debris, foreign objects, or a mechanical issue with the disposal itself.
Some common symptoms of a frozen garbage disposal include a humming or buzzing noise when turned on, the disposal not spinning at all, or water backing up in the sink. To troubleshoot and fix a frozen disposal, you can try resetting the disposal, removing any jammed objects, or clearing a clog. However, if the disposal is severely damaged or the issue persists, it's best to call a professional plumber to diagnose and repair the problem.