What is the reason for the continuous noise of the booster pump when there is no water flow?

[DiMiles]

The reason for the continuous noise of the booster pump when there is no water flow is a problem with the pressure control system. Since there is no water usage in the pump's outlet direction, the pressure quickly replenishes, causing the booster pump to immediately go into standby mode. Another reason could be a leak in the pump's outlet pipe. Specific reasons: There is a problem with the pressure control system. The pump reaches the controlled pressure as soon as it starts working, causing it to stop. This indicates an issue with the pressure control system. When the pump stops, the pressure drops again. Since there is no water usage in the pump's outlet direction, the pressure quickly replenishes, causing the booster pump to immediately go into standby mode. This repeated cycle results in the phenomenon of intermittent noise. The solution is to replace the one-way check valve with a high-quality one. In fact, most cases of intermittent noise are caused by a faulty check valve. There is a leak in the pump's outlet pipe. A leak in the outlet pipe causing intermittent noise operates on the same principle as a leaky check valve—both are due to the drop in water pressure inside the pump cavity, which causes the pump to restart and replenish pressure. Because the water flow in the outlet direction is minimal, the pressure quickly rises to the set value, causing the booster pump to stop and maintain pressure. Once the pressure is reached, the leak causes the water pressure to drop again, prompting the booster pump to replenish pressure once more. This repeated cycle results in the phenomenon of intermittent noise. Precautions: The motor coil is equipped with a safety protector. If the pump malfunctions or fails to draw water, causing the motor temperature to exceed the specified value, it will automatically cut off the circuit. Once the fault is resolved and the motor temperature drops, it will automatically resume operation. The booster pump motor is a capacitor-run motor, and the rotation direction is preset at the factory. If you need to replace the capacitor or rewire, please follow the arrow direction marked on the pump body for wiring. To ensure safety, always use a three-core safety socket with a grounding wire. If you notice a leak in the pump, stop it immediately and check for internal leaks. If there is a leak at the connection with the motor, replace the mechanical seal. Check whether the power supply is connected. Ensure the power voltage matches the pump's operating voltage.