Why Does My Well Pump Keep Running: 7 Key Reasons

Ever wondered why your well pump doesn’t stop running? Each unending hum brings more questions and concerns about what could possibly be wrong.

In this article, we aim to demystify the common causes behind a perpetually running well pump. We’ll provide insights into the primary culprits and offer guidance on how to identify and tackle these potential issues.

Table of contents

Why does my well pump keep running?

There can be several reasons why your well pump keeps running. It could be due to a faulty pressure switch, which is responsible for regulating the pump’s operation based on water pressure. Another possibility is a leak in the plumbing system, causing the pressure to drop and triggering the pump to keep running.

A malfunctioning check valve may allow water to flow back into the well, causing the pump to continuously cycle. Finally, an insufficient or damaged pressure tank can also lead to the pump running continuously. It is recommended to consult a professional to diagnose and fix the issue.

7 key reasons: why your well pump doesn’t stop running

1. Faulty pressure switch

A faulty pressure switch can cause a well pump to continuously run. The pressure switch monitors water pressure and signals the pump to turn on or off accordingly. If the switch is malfunctioning, it may fail to detect the correct pressure level, leading to the pump running constantly. Replacing the pressure switch should resolve this issue.

2. Plumbing leaks

Plumbing leaks in the system can also prevent a well pump from stopping. When there are leaks in the pipes or fittings, water escapes, causing a drop in pressure. The pressure drop triggers the pressure switch to keep the pump running in an attempt to maintain the desired pressure level. Locating and repairing the leaks will restore normal pump operation.

3. Malfunctioning check valve

A malfunctioning check valve can contribute to a well pump running continuously. The check valve ensures that water flows in one direction and prevents backflow into the well. If the check valve is faulty, water may flow back into the well, causing the pump to cycle continuously. Replacing the faulty check valve is necessary to resolve this issue.

4. Insufficient pressure tank

An insufficient pressure tank can keep a well pump running constantly. The pressure tank stores pressurized water and helps regulate pump operation. If the tank is too small or damaged, it may not contain enough water to maintain proper pressure levels, leading to continuous pump operation. Replacing or repairing the pressure tank will restore normal functioning.

5. Stuck pump relay

A malfunctioning or stuck pump relay can also cause a well pump to run continuously. The pump relay controls the power supply to the pump motor and should turn off when the desired pressure is reached. If the relay gets stuck or fails to function properly, it may not cut off power to the pump, resulting in continuous operation. Checking and replacing the pump relay as needed should resolve this issue.

6. A waterlogged pressure tank

A waterlogged pressure tank can contribute to a well pump that doesn’t stop running. This occurs when the tank becomes filled with water instead of air, disrupting its ability to regulate pressure effectively. A damaged or improperly adjusted air bladder is often the cause of a waterlogged tank. Repairing or replacing the air bladder will resolve this issue.

7. Electrical issues

Electrical problems can also prevent a well pump from stopping. Short circuits, faulty wiring, or power surges can disrupt the normal functioning of the pump, causing it to run continuously. It is crucial to inspect and address any electrical connections, wiring, or circuitry issues associated with the pump to restore proper operation.

Could the water level be causing my well pump to keep running?

Yes, the water level can indeed impact the function of a well pump. If the water level in the well drops too low, the pump may struggle to draw water effectively, leading to continuous operation.

This can occur due to various reasons, such as a decreased water table, drought conditions, or a malfunctioning well system. Monitor the water level in the well and address any underlying issues to ensure proper pump function and avoid unnecessary running.

Can a faulty pressure switch make the well pump run endlessly?

The pressure switch plays a crucial role in the operation of a well pump. It is a device that monitors the water pressure in the system and controls the pump’s activation and deactivation based on the set pressure thresholds.

When the water pressure drops below a certain level, the pressure switch signals the pump to turn on and start pumping water into the system until it reaches the desired pressure. Conversely, when the pressure reaches the upper threshold, the pressure switch signals the pump to turn off.

However, if the pressure switch becomes faulty or malfunctions, it may fail to accurately detect and regulate the pressure, causing the well pump to run endlessly without shutting off when it should. Therefore, a faulty pressure switch can indeed result in continuous operation of the well pump.

Does a hole in the drop pipe influence well pump operation?

The integrity of the drop pipe is essential for the proper operation of a well pump. A drop pipe is a vertical pipe that connects the pump at the bottom of the well to the surface, allowing water to be pumped up. If there is a hole or damage in the drop pipe, it can significantly impact the well pump’s performance.

First, a hole in the drop pipe can cause a loss of water pressure, reducing the pump’s ability to effectively draw water from the well. This can lead to decreased water flow or even a complete failure of the pump to operate.

Also, a damaged drop pipe can allow debris, sediment, or contaminants to enter the pump, potentially causing clogs or damage to the pump components. Therefore, it is crucial to ensure the integrity of the drop pipe by regularly inspecting it and promptly repairing any holes or damages to maintain optimal well pump operation.

How does a closed valve between the pump and pressure switch impact the well pump?

A closed valve between the pump and pressure switch can have a significant impact on the operation of a well pump. The pressure switch relies on the water flow to accurately detect the pressure levels in the system and regulate the pump’s activation and deactivation. When a valve is closed, it restricts or completely blocks the water flow, causing the pressure switch to sense a higher pressure than the actual pressure.

As a result, the pressure switch may not signal the pump to turn on when it should, or it may prematurely turn off the pump, thinking that the desired pressure has been reached. This can lead to improper functioning of the well pump, with reduced water flow or the pump running continuously without shutting off.

Therefore, you have to make sure that all valves between the pump and pressure switch are open to maintain accurate pressure readings and proper operation of the well pump.

Can leaks in the well piping cause the well pump to run continuously?

Yes, leaks in the well piping can cause the well pump to run continuously. When there are leaks in the well piping, water escapes from the system, resulting in a drop in pressure.

In response to the pressure drop, the pressure switch signals the pump to turn on and keep running in an attempt to maintain the desired pressure level. However, because of the continuous water loss through the leaks, the pressure never reaches the set threshold for the pump to shut off.

As a result, the pump runs continuously, trying to compensate for the lost water. Repairing the leaks in the well piping is necessary to restore proper water pressure and prevent unnecessary and wasteful pump operation.

What connection does the air in the system have with the continuous running of the well pump?

The presence of air in the water system can have a direct connection to the continuous running of a well pump. When air enters the system, it displaces water and disrupts the pressure balance. As a result, the pressure switch may not detect the correct pressure level, leading to the pump continuously running to maintain the desired pressure.

Air can enter the system through various means, such as a damaged well or suction line or a faulty check valve. The continuous operation of the well pump due to air in the system can lead to several concerns. First of all, it results in unnecessary energy consumption and wear on the pump components, potentially reducing their lifespan.

Second, it can cause decreased water flow and pressure throughout the plumbing system, affecting the functionality of appliances and fixtures.

Air in the water can cause sputtering faucets, noisy pipes, and reduced water quality. Address the presence of air in the system by identifying and repairing any leaks or damaged components, ensuring proper functioning of the well pump, and maintaining a reliable water supply.

Why might a well pump that has lost prime keep running?

When a well pump loses prime, it means that the pump is no longer able to pull water effectively from the well. Prime loss can occur due to various reasons, such as a drop in the water level, a blockage in the suction line, or a damaged pump impeller.

Despite losing prime, the well pump may continue running because it is unable to detect that it is no longer drawing water. The pump keeps running in an attempt to restore prime and maintain water flow, but since it cannot effectively pull water, it runs continuously without success.

Continuous operation in this state can lead to overheating of the pump motor and potential damage to its components. It is crucial to address the prime loss issue promptly by identifying and resolving the underlying cause to prevent unnecessary and potentially damaging operation of the well pump.

How does damage to the well pump contribute to it running perpetually?

Damage to the well pump can contribute to its continuous and perpetual running. When the pump is damaged, it may fail to function properly and efficiently. For example, a damaged impeller or motor can hinder the pump’s ability to draw water from the well effectively.

As a result, the pump may struggle to reach the desired pressure level or maintain a consistent water flow. In response to this inefficiency, the pressure switch may not receive the appropriate signals to turn off the pump, causing it to run perpetually in an attempt to compensate for the inadequate water supply.

Continuous running not only wastes energy but also puts additional stress on the pump, further exacerbating the damage. It is crucial to address any damage to the well pump promptly by repairing or replacing the affected components to restore normal pump operation and prevent further issues.

Can setting the cut-out pressure above the well’s capacity make the well pump keep running?

Setting the cut-out pressure above the well’s capacity can indeed cause the well pump to keep running continuously. The cut-out pressure refers to the upper threshold at which the pressure switch signals the pump to turn off. When the cut-out pressure is set too high and exceeds the well’s capacity to supply water, the pump will struggle to reach that pressure level.

As a result, the pressure switch will not receive the signal to shut off the pump, and it will continue running in an attempt to reach the set cut-out pressure. This continuous operation can strain the pump, lead to excessive energy consumption, and potentially cause overheating or damage to its components.

It is crucial to set the cut-out pressure within the appropriate range that aligns with the well’s capacity to ensure proper pump operation and avoid unnecessary and wasteful running.