Sump Pump Troubleshooting – Addressing Common Issues

Your sump pump will need a power source to work. Make sure it’s plugged in properly and not being obstructed by rocks, debris, soil, etc.

If the sump pump is tripping your circuit breaker, it’s probably due to an undersized motor or a faulty switch. These require professional repairs.

Float Switch Malfunction

Float switch malfunction is one of the most common reasons sump pumps fail. If the float switch is stuck or there’s mineral buildup around it, this can prevent it from moving up and down.

The switch may also be damaged or faulty, in which case it will need to be replaced. In some cases, disconnection of the float switch and manually raising and lowering it can restore it to its correct operation.

It’s also a good idea to regularly check the discharge pipe for any signs of obstruction. Debris that enters the pipe can slow pumping or block it completely, causing water to back-flow into the basement and creating a flood hazard. Keeping the pipe clean and covering it with a metal grate can help prevent this. Lastly, if the pump keeps running nonstop, it might be due to a broken check valve or a defective impeller. In either case, a professional should be consulted for a replacement.

Clogged Discharge Pipe

If the float switch is working and the motor starts, but the pump never stops running, there’s likely a blockage in the discharge pipe. This prevents water from exiting the sump pit, which will keep the pump running nonstop. If this is the case, the pump will burn out and need to be replaced.

You can check the discharge line for clogs by shining a light into it and visually inspecting whether there are any blockages. You can also remove the pump and rinse off the discharge line with a hose to help dislodge any clogs. It’s important to clean the discharge pipe regularly as it can pick up a lot of dirt, debris and rocks over time. It should also be protected with a grate or vent cap to prevent the lines from freezing. If the problem persists, call a plumber for professional help. Your plumber can determine the cause of the issue and recommend a solution.

Faulty Electrical Connection

As it is powered by electricity, a sump pump will only work when the power is on. Unfortunately, power outages are not uncommon during storms and can render the pump inoperable. Having a battery backup system or a generator is essential to ensure that the pump will continue to function even during a power outage.

The float switch that activates and deactivates the pump can sometimes become tangled or jammed. It may be blocked by debris or there could be a mineral/dirt buildup that keeps it from moving up and down. Inspecting the float switch regularly and cleaning it occasionally will prevent these issues from occurring.

The pump’s motor can also overheat if there are cooling vents blocked by dirt, leaves, or other debris. A professional can inspect the motor for signs of damage or deterioration and make necessary repairs. A professional can also install surge protectors or voltage stabilizers to reduce the likelihood of damaging electrical fluctuations.

Faulty Motor

The motor that drives a sump pump is delicate and relies on many parts to function effectively. Occasionally, these pieces can become dislodged or malfunction, leading to the pump not working when it’s needed. This can also happen when a switch becomes stuck in the “on” position, preventing it from activating the pump at all. The first step is to check the switch for physical damage, and make sure it can move freely up and down. If the switch is simply obstructed, you can clean it to restore its functionality.

You can also test the electrical connections by plugging another appliance into the same outlet to ensure that it’s getting the proper voltage. If not, you may need to install a dedicated GFCI outlet in your home, or consult an electrician. Alternatively, you can run your sump pump on its own circuit that’s separate from your other appliances. This will prevent them from tripping the breakers on your home’s electrical system.