A sump pump runs constantly when there is a lot of groundwater, the float switch is stuck on, the check valve has failed, or the pump is too small for the job. After a big storm, frequent running can be normal. If it keeps going long after the weather clears, something may be wrong.
Lots of Water After Storms
After long rain or snowmelt, the soil around a foundation can stay soaked for days. During that time, a pump may cycle often simply because water keeps coming in. Watch whether the running slows down as the ground dries out.
A Float Stuck in the Up Position
The float tells the pump when to start and stop. If it gets caught on the pit wall, the power cord, or debris, it can stay up and keep the pump running even after the pit is empty. Running dry can overheat and damage the motor.
A Broken Check Valve
The check valve on the discharge pipe keeps pumped water from falling back into the pit. If it fails, the same water drains back each time the pump stops, and the pump turns right back on. You may hear water rushing back after each cycle.
A Pump That Cannot Keep Up
A pump that is too small, or that has lost strength with age, may run nonstop during heavy rain and still fall behind. Water that drains out too close to the foundation can also soak back in and return to the pit.
Warning signs that the pump is under strain include a housing that is hot to the touch, a burning smell, or a pump that cycles every few seconds. Keep away from the pit and any cords if water is rising.
If the pump never seems to rest, a plumber can test the float, valve, and motor and fix the cause. Call JPR Plumbing at (833) 603-1840. A pump that runs this much may also point to other basement water problems worth a look.