A sump pump high-water alarm goes off because the water level inside the sump pit basin has exceeded a safe threshold, lifting a secondary mechanical float sensor to close an electrical circuit and sound the warning siren. This dangerous condition is typically triggered by a primary pump mechanical failure, a tripped circuit breaker or unplugged power cord, a stuck float switch that prevents the motor from turning on, or torrential storm runoff overwhelming the pump's maximum discharge capacity. Verification: Check the water level inside the pit and test the primary pump operation immediately.
1 votes
Marked as accepted