why sump pumps fail 21

https://remote-wiki.win/index.php/Why_Sump_Pumps_Fail:_Lessons_from_Gateway_Water_%26_Mold

Sump pumps often fail due to a stuck float switch, which stops the pump from turning on when water rises. A clogged intake from debris or a frozen discharge line can also prevent water from leaving. Over time, the pump's motor can burn out if it runs continuously, like during heavy storms. Rust or corrosion from standing water damages internal parts. Turning off or rising power are common issues. Regular cleaning and testing help, but failures often happen unexpectedly during a downpour.