What to Do When Your Sump Pump Stops Working: A Homeowner’s Guide
A sump pump is a crucial defense against basement flooding, protecting your home from water damage during heavy rain or rising groundwater levels. But what happens when your sump pump suddenly stops working? If it fails, your basement could quickly fill with water, leading to costly damage.
If your sump pump has stopped working, don’t panic—there are steps you can take to troubleshoot and fix the issue before calling in a professional. Follow this guide to identify common problems and get your sump pump back in action.
1. Check for Power Issues
One of the most common reasons for sump pump failure is a power outage or electrical problem.
How to Troubleshoot:
Ensure the pump is plugged in properly and the outlet is functional.
Reset the circuit breaker if it has tripped.
If your pump is connected to a GFCI outlet, reset it by pressing the reset button.
Consider using a battery backup system or a water-powered backup sump pump to prevent failures during power outages.
2. Inspect the Float Switch
The float switch activates the pump when water levels rise. If it gets stuck or broken, the pump won’t turn on.
How to Fix a Stuck Float Switch:
Remove any debris blocking the float.
Gently move the float up and down to see if it engages the pump.
If the float is damaged, it may need to be replaced.
A properly working float switch ensures the sump pump activates when needed.
3. Clear the Discharge Pipe
A clogged or frozen discharge pipe prevents the pump from expelling water, causing it to shut down.
How to Check for Clogs:
Inspect the pipe for visible debris or blockages.
Use a garden hose or have a plumbing service snake to clear any obstructions.
In winter, ensure the pipe is not frozen—use heat tape if necessary.
Keeping the discharge pipe clear prevents water from backing up into the sump pit.
4. Test the Check Valve
The check valve ensures that water flows out of the pump and doesn’t return to the sump pit. If it’s faulty, your pump may cycle improperly or fail to remove water efficiently.
How to Inspect the Check Valve:
Look for signs of wear or damage.
Ensure the valve is installed correctly (arrows should point away from the pump).
If faulty, replace the check valve to prevent backflow.
A functioning check valve keeps your sump pump running smoothly.
5. Clean the Sump Pit
Dirt, gravel, and debris can accumulate in the sump pit, blocking the pump’s intake and causing failure.
How to Clean the Pit:
Turn off the pump and scoop out debris with a wet/dry vacuum or bucket.
Inspect the pump’s intake screen and clean it if clogged.
Regular cleaning prevents buildup that can lead to pump failure.
6. Call a Professional if Necessary
If you’ve tried all the above steps and it still isn’t working, it may need professional sump pump repair or replacement.
Signs You Need Professional Help:
The pump hums but doesn’t pump water.
The motor is burnt out.
The pump is over 10 years old and frequently malfunctions.
A licensed plumber can diagnose and fix issues that go beyond basic troubleshooting.
A malfunctioning sump pump can put your home at risk of flooding, but quick action can often restore its function. By checking the power source, cleaning the sump pit, inspecting the float switch, clearing the discharge pipe, and maintaining your system, you can keep your pump in top condition.
For long-term peace of mind, consider installing a battery backup system and scheduling regular maintenance. If your sump pump is old or beyond repair, replacing it before a major storm can save you from expensive water damage.
If your sump pump has stopped working, don’t wait—act fast to prevent basement flooding and protect your home!