Why Troubleshooting Sump Pump Problems Matters?
Your sump pump is your home’s first line of defense against basement flooding. But when it fails — even for a short period — it can lead to costly water damage and mold growth. Understanding how to troubleshoot sump pump problems helps you detect early warning signs, perform simple fixes, and know when it’s time to call a plumbing professional.
At Priscilla’s Plumbing, we’ve repaired countless sump pumps, and most issues stem from a few common problems. Let’s explore each one, along with practical troubleshooting steps and solutions.
Common Sump Pump Problems and Fixes
1. Motor Failure
When your sump pump doesn’t start, makes grinding noises, or fails to pump water, the motor could be at fault.
Troubleshooting Steps:
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Check Power Supply: Ensure the outlet the pump is plugged into is working. Test with another device.
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Inspect the Float Switch: Sometimes, a faulty or jammed float switch prevents the motor from engaging.
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Listen for Unusual Sounds: A humming or rattling sound may indicate a burned-out motor.
Solution:
If basic troubleshooting doesn’t help, avoid DIY motor repairs — improper handling can worsen the problem. Instead, contact a licensed plumber at Priscilla’s Plumbing to inspect and replace the motor safely.
2. Clogged Filters or Intake Screen
If your pump runs but water isn’t being removed, a clogged filter may be restricting water flow.
Troubleshooting Steps:
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Turn off and unplug the pump.
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Remove and clean the filter or intake screen using a soft brush and water.
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Check for sediment or debris in the sump pit.
Solution:
Regularly clean your filter every 3–4 months. You can also install a pre-filter to catch larger debris and reduce clogging risks.
3. Power Supply Problems
Sometimes, sump pump issues come down to a simple power supply failure.
Troubleshooting Steps:
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Test the Power Outlet: Plug in another appliance to confirm it’s receiving power.
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Inspect Power Cord: Look for cracks or frayed wires.
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Check Circuit Breaker: Reset any tripped breakers or replace blown fuses.
Solution:
If none of these steps restore power, there may be an electrical fault. Call an electrician or plumber to diagnose the issue safely.
4. Float Switch Malfunction
A malfunctioning float switch is one of the most common sump pump problems. It detects rising water levels and activates the pump.
Troubleshooting Steps:
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Clean the Switch: Dirt or debris can block its movement.
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Ensure Proper Positioning: The float should move freely within the pit.
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Test Manually: Lift the float to see if the pump turns on.
Solution:
If the switch doesn’t trigger the pump, it likely needs adjustment or replacement. Keeping this component in good shape prevents flooding and extends pump lifespan.
5. Check Valve Failure
If you notice water flowing back into the sump pit after the pump shuts off, the check valve may be faulty.
Troubleshooting Steps:
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Inspect for debris or damage inside the valve.
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Check that it’s installed in the right direction (arrow pointing away from the pump).
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Clean or replace as needed.
Solution:
A properly installed check valve prevents backflow and ensures efficient pumping. Replace the valve every few years as part of preventive maintenance.
6. Wrong Pump Size
An incorrectly sized sump pump can cause frequent cycling or insufficient drainage.
Troubleshooting Steps:
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Compare pump capacity with your basement’s square footage and water inflow rate.
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Watch for frequent on/off cycling — a sign the pump is too small or too large.
Solution:
Have a professional plumber assess your system to ensure your pump matches your property’s drainage requirements. Oversized pumps wear out faster; undersized pumps risk overflow and motor burnout.
7. Pump Overload During Heavy Flooding
If your pump struggles during storms or periods of high groundwater, it may be overloaded.
Troubleshooting Steps:
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Monitor pump performance during heavy rain.
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Check if water rises faster than it’s being discharged.
Solution:
Install a high-capacity sump pump or a secondary backup pump to manage heavy inflow. These systems ensure your basement stays dry even during severe weather.
8. Incorrect Installation
Improper sump pump installation is a hidden cause of many failures.
Troubleshooting Steps:
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Verify the pump is installed on a stable, level surface — not gravel or dirt.
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Ensure the discharge line has a check valve and a small air hole.
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Follow the manufacturer’s installation guide carefully.
Solution:
If you’re unsure about the setup, it’s best to have a professional reinstall or inspect your system. Proper installation ensures efficiency and long-term reliability.
Preventive Maintenance Tips
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Test your pump monthly by pouring water into the pit.
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Clean the pit and filter to prevent sediment buildup.
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Inspect cords, switches, and valves regularly.
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Install a battery backup system for protection during power outages.
Preventive care is the best way to avoid costly repairs later. Go for drain cleaning service near you if you have messy water problems.
When to Call a Professional?
If your sump pump continues to fail after basic troubleshooting, it’s time to call the experts at Priscilla’s Plumbing.
We specialize in sump pump troubleshooting, repair, and replacement — ensuring your home stays protected from flooding year-round.
📞 24/7 Emergency Service
Call: (954) 787-2052
Final Thoughts
Learning how to troubleshoot sump pump problems can save you from sudden flooding and costly damage. From checking power issues to inspecting float switches and valves, these steps will help you maintain your system efficiently.
If you’ve tried these troubleshooting tips and your sump pump still isn’t working right — don’t wait for a disaster. Contact Priscilla’s Plumbing for expert sump pump repair and maintenance services.
FAQs About Troubleshooting Sump Pump Problems
Q1: What is the most common reason for sump pump failure?
A: Power outages and stuck float switches are the leading causes of sump pump failure.
Q2: How can I troubleshoot a sump pump that won’t turn on?
A: Start by checking the power source, inspecting the float switch, and cleaning out debris from the intake screen or discharge pipe.
Q3: How long does a sump pump usually last?
A: Most sump pumps last 7–10 years with regular maintenance and cleaning.
Q4: Should I replace or repair my sump pump?
A: If your unit is over 10 years old or frequently malfunctions, replacement is usually the more cost-effective option.
