SUMP PUMP NOT WORKING
Different Symptoms Point to Different Problems
A sump pump that "isn't working" can mean several different things — and the cause determines the fix. A pump that won't turn on at all is the most urgent scenario: it could be a tripped GFCI outlet or circuit breaker (the easiest fix), a stuck float switch, a failed motor, or a wiring problem. Any of these can leave your pit filling with no protection.
A pump that runs but doesn't seem to be moving water points to a failed impeller, a blocked discharge line, or a check valve stuck closed — the motor is running but water isn't moving. A pump that cycles on and off constantly without the water level clearly rising is often a failed check valve allowing water to flow back into the pit after each pump cycle, causing the float to re-activate almost immediately.
A pump that runs continuously without shutting off has a float switch that's stuck in the "on" position, a float that's tangled or wedged, or a genuine groundwater problem where inflow exceeds the pump's capacity. Each of these has a clear diagnosis pathway — and Downing Plumbing works through it systematically to find the actual problem, not just the most likely guess.