why sump pumps fail 3

https://wiki-byte.win/index.php/Why_Sump_Pumps_Fail:_The_Most_Common_Causes_Homeowners_Overlook

Sump pumps often fail because of a stuck float switch, a clogged intake, or a burned-out motor from running dry. Debris like gravel or rags can jam the impeller, while power surges or old age can zap the electronics. If the pump isn't sized for your water volume, it can overheat. Regular cleaning and a backup system help, but eventually, wear gets everything.