When a sump pump float switch fails to trigger the motor, the problem is typically caused by the float arm getting physically trapped or wedged against the side of the sump pit basin, debris accumulation around the switch mechanism, a tangled tether cord, or internal electrical switch failure. If the float cannot rise freely with the water level, the circuit remains open and never signals the motor to turn on. Verification: Reach into the pit and manually lift the float switch to see if the motor engages.
1 votes
Marked as accepted