Why does the booster pump keep running when not in use?

3 Answers
Moore
07/28/25 12:56pm
The following are the reasons why the booster pump keeps running when not in use: 1. Water leakage in the pipe connected to the booster pump: Due to the decrease in water pressure in the pump chamber, the pump restarts to replenish the pressure. Because the water output is very small, the pressure quickly rises to the set value, causing the booster pump to stop maintaining pressure. When the pressure is reached, the water pressure will drop due to leakage, and the booster pump will replenish the pressure again. 2. The check valve of the booster pump is of poor quality: Since there is no water in the outlet direction of the pump, the pressure is quickly replenished, and the booster pump immediately enters a dormant standby state. The reciprocating cycle causes this obvious shutdown phenomenon. The solution is to replace the one-way check valve with one that meets quality standards. 3. There is a problem with the control system of the booster pump: When the control system malfunctions, the water pump will not work, and the pressure disappears once the pump stops.
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McKhloe
08/11/25 5:38pm
I installed a booster pump at home, and it keeps buzzing when not in use, which is really annoying. After checking, I found out it might be the pump running dry. When there's no water in the system to pump, the pump continues to operate without water, which can cause increased noise due to bearing wear or air getting in. Additionally, unstable power voltage can also make the motor produce abnormal sounds. This thing was originally designed to start on demand, but if the sensor fails or there's a blockage in the pipes, it will keep working hard. Prolonged operation like this not only disturbs the neighbors but also risks burning out the pump core, so it's important to get it checked or inspect the system for leaks promptly. Now, I regularly check the pressure gauge and water level to ensure everything runs smoothly, avoiding being woken up at night and having to spend money on a new pump. Maintenance is actually quite hassle-free.
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VanFrancisco
09/28/25 7:49am
My neighbor complained that the booster pump was making a lot of noise, and later discovered that the pump was running idle when not in use. It could be due to wear on the pump head or air leakage in the inlet pipe, where air infiltration causes increased internal vibration and noise. Voltage issues might also lead to abnormal operation; if the regulator is faulty or the wiring is loose, the pump can run erratically. This situation needs to be addressed as soon as possible, otherwise, the noise will only get worse until the pump fails completely. Last time, I called a technician to check it, and simply replacing a sealing ring fixed the issue. Regular maintenance, like keeping the system filled with water to avoid dry running, can extend the pump's lifespan and prevent disturbing others, which is quite important.
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