Why Does Your Pump Keep Turning on and off?
If your water pump keeps turning on and off repeatedly, a condition often referred to as pump short cycling, it’s more than just an annoyance. This type of behavior could be a sign of an underlying issue that, if left unchecked, could lead to costly repairs or reduced system efficiency.
In this blog, we’ll explore the most common reasons your pump is cycling too frequently, and what you can do about it.
1. Faulty or Deflated Pressure Tank Bladder
One of the most frequent causes of pump cycling is a problem with the pressure tank. Inside most modern pressure tanks is a rubber bladder or diaphragm that separates the air and water. If this bladder is punctured or has lost air pressure, the pump will run more often than necessary to maintain pressure in the system.
2. Pressure Switch or Control Set Issues
Another common culprit is the pressure switch or pump controller. These components control when the pump starts and stops based on pressure readings. If they are out of calibration, faulty, or worn out, the pump may switch on and off erratically.
3. Leaks in the Plumbing System
If there is a leak in your pipes, joints, or fittings, your system may be losing pressure quickly, causing the pump to restart often. Even small leaks can lead to noticeable cycling over time.
4. Failing Check Valve
The check valve ensures water only flows in one direction, from the pump to the system. If the check valve is damaged or its internal spring isn’t functioning properly, water can flow back toward the pump when it shuts off, causing pressure loss and repeated cycling.
5. Damaged Pump Impeller
Lastly, a worn or damaged pump impeller can reduce water flow and pressure, leading to inefficient performance. Cavitation, age, or debris can all cause damage to the impeller blades, forcing the pump to work harder and restart frequently.
Let Famco Help You Diagnose Your Pump Problems
Whether it’s a bladder tank issue, a faulty pressure switch, or something more serious like a bad check valve or impeller, Famco’s experts are ready to help. Visit Famcocorp today to get professional support and ensure your water system operates at peak performance!
