Sump Pump Running Constantly: Causes, Risks, and How to Fix It

A reliable sump pump is critical to your home’s comfort and health. However, an issue like constant running signals that it is malfunctioning and needs immediate service. Learn when to hire our plumbers in Greenville, WI to repair your home’s sump pump by understanding the causes, risks, and remedies for a sump pump that runs constantly.

Stuck Float Switch

A stuck float switch can make your sump pump running continuously. This problem occurs because of debris in the sump pit, misalignment or obstruction from ice, among other factors.

This issue carries with it risks like the pump burning out and the basement or crawl space in your home flooding. Inspect the float regularly, and reposition it as needed. Keep it free from debris to ensure it moves freely. Replace the float switch when it shows a lot of wear.

Faulty Check Valve

The check valve acts as a one-way gate in the sump pump’s discharge line. It prevents water from flowing backward into the pit.

However, when it stops working normally, it can make the sump pump running constantly in an attempt to remove the water. Lower the risk of this occurring by inspecting the valve to ensure it does not rattle and is not stuck.

Also, make sure it faces in the proper direction. Likewise, consider upgrading to a high-quality, spring-loaded valve.

High Water Table

During wet seasons, your sump pump may work overtime to keep your home dry. Constant running increases the risk of malfunctioning and shortens the pump’s lifespan.

You cannot control the rainfall, but you can ease the pump’s burden by running a secondary sump pump or using a battery backup.

Additionally, keep the gutters on your roof clean, and improve the exterior grading of your property. Consider adding a French drain to minimize the stress on the sump pump.

Clogged or Frozen Discharge Line

The discharge line carries water out of the sump pump pit away from your home. Without it, the sump pump has no way to rid itself of water.

Even so, this line can become clogged or freeze. When either occurs, it leads to the pump overheating and the potential for water backing up into your home.

Protect the discharge line by clearing away ice and debris inside it. Use a freeze-guard device, or insulate the line to keep it from freezing. Make sure the pipe slopes downward to prevent water from backing up inside the house.

Leaking or Broken Discharge Pipe

A leaky or damaged discharge pipe will also force a sump pump to run. Water circulates back toward the foundation, making it necessary for the pump to run constantly in a bid to remove it.

Lower this risk by inspecting the discharge regularly for signs of damage or leaks. Replace cracked sections immediately. Additionally, use PVC cement or couplers to seal the joints.

Undersized Sump Pump

A sump pump that is too small for your house can run continuously because it cannot keep up with the demands placed on it. It can eventually run so much that it malfunctions and fails.

Choose the right-sized sump pump for your home by measuring the required flow rate. Figure the total dynamic head, and match both of these totals to the performance charts of sump pumps you consider buying.

Many safety experts even advise selecting a sump pump that can handle 15% to 20% more than these measured totals. Our plumbers can advise you on the best sump pump size to use for your home.

Too Small of a Sump Pit

The pit, or collection basin, of the sump pump is where the water gathers before the pump discharges it away from your home. If the pit is too small, the pump will cycle constantly because it fills up too fast.

Deepening the existing pit helps prevent this issue. Remove the pump and water to install a corrugated pipe section to extend the basin. You should also use gravel at the bottom to improve the pit’s stability.

Faulty Impeller

The impeller on a sump pump is a spinning, fan-like component that creates suction to move water into and out of the discharge pipe. When it fails, it can lead to the pump running continuously as well as the motor burning out and flooding inside the home.

Address a faulty impeller by unplugging it and then removing it. Inspect it carefully, and remove any debris you find. Replace a damaged impeller with a new one.

Backflow From the Municipal Storm Drain

Water that flows back from the municipal storm drain will increase the risk of your sump pump not shutting off normally. This backflow also brings with it the risk of sewage contamination.

Protect the sump pump and your home’s water supply by installing a backflow preventer. This device keeps water that you have already pumped out from rushing back in. It also prevents dirty water from municipal lines from entering your plumbing system.

Add a secondary check valve to act as a backup to the backflow preventer. A secondary check valve serves as a one-way backup gate in case the backflow preventer fails or sticks open.

Improper Sump Pump Installation

An improperly installed sump pump has a higher risk of not shutting off as it should. Instead, it can cycle constantly, as well as sustain vibration damage. It may even fail prematurely, making it necessary for you to replace it.

Make sure the sump pump for your home is level and on a solid base. Likewise, follow the manufacturer’s instructions to install it properly.

Debris in the Pit

Debris in the sump pit will put your sump pump in danger of constant running. However, groundwater often contains dirt and sediment that settles at the bottom of the pit. Erosion around the foundation can also lead to this issue.

Debris also increases the risk of problems like impeller clogs, float jams and overheating. Clean the pit thoroughly at least every three to four months. Consider adding a sump pump basin cover made from materials like polyethylene, structural foam and fiberglass to keep debris out of the pit.

Pump Stuck in the ‘On’ Position

A pump that is stuck in the “on” position leads to the motor burning out and the pump overheating. Address this problem by checking the switch wiring. Replace the switch assembly if it shorts. Do not use extension cords. Instead, plug the sump pump directly into a GFCI outlet.

Age

Most sump pumps can last seven to 10 years. However, as they age, they are often more susceptible to serious problems, including constant running. An aged sump pump can also fail suddenly during periods of heavy rainfall, increasing your home’s risk of flooding. Replace your sump pump if it is older than 10 years.

Consider choosing a new cast-iron sump pump for maximum durability and performance. Install a battery backup for it to increase your peace of mind.

Reliable Sump Pump Repair

At Black-Haak, we have 70 years of experience providing reliable sump pump repair in Greenville and throughout Wisconsin’s Fox Valley. Our locally owned business, rated A+ by the Better Business Bureau, is available 24 hours a day. As our customer, you can rely on us for up-front information and answers to all your questions. Our team offers other plumbing services like drain and pipe repairs, too.

Contact Black-Haak today to schedule sump pump repair or learn more about what we can do for you.