The answer to 'sump pump clogged' is that a clogged sump pump can be caused by debris, sediment, or even a failed check valve. Symptoms include the pump not turning on, the pump running but not removing water, or water backing up in the sump pit. Solutions may involve clearing the pump intake, cleaning the impeller, or replacing the check valve.
If the clog is minor, you may be able to clear it yourself by unplugging the pump, removing the cover, and using a garden hose or plumber's snake to dislodge any debris. However, if the issue persists or you're not comfortable working on the pump, it's best to call a professional plumber who can properly diagnose and fix the problem.