A sump pump runs constantly when its float is stuck in the raised position, its check valve lets water fall back into the pit, groundwater keeps pouring in after heavy rain, the pump is too small for the job, or the discharge pipe is blocked. A little nonstop running during a big storm is normal. Nonstop running on a dry day is not.
What the Pump Is Telling You
Watch it for a few minutes and note the pattern:
- Runs with the pit nearly empty: the float is likely stuck
- Shuts off, then restarts within seconds: the check valve may be failing
- Runs steadily while the water barely drops: a weak pump or blocked discharge
- Runs often for days after rain: high groundwater
The Float
The float needs room to move. A cord, debris, or the pit wall can hold it up so the pump never gets the signal to stop. Unplug the pump before checking. Never reach into the pit while it has power.
The Check Valve and Discharge
The check valve should let water out but never back in. If it fails, the same water cycles in and out of the pit. Outside, the discharge end should be clear of leaves, dirt, snow, and ice, and it should empty well away from the foundation so the water does not soak right back in.
Pump Size and Age
In very wet conditions, a smaller pump may simply fall behind. Older pumps also lose strength over time. A plumber can compare the pump’s capacity with how quickly your pit fills.
Constant running wears out a motor much faster than normal use. A plumber can pinpoint why the pump will not rest before the next storm. You might also ask about a backup pump or battery system for added protection. Call JPR Plumbing at (833) 603-1840.