Well water pumps should power up until the reservoir inside the house is full before shutting down. However, a variety of technical issues can cause the pump to short-cycle, powering on and off too frequently to provide a steady supply of water. Below are several reasons you might experience this common pump problem.

Why Your Water Pump May Be Short-Cycling

1. Not Enough Air in the Water Tank

The water tank also contains a significant amount of air, which keeps the entire plumbing system pressurized. If your tank doesn’t have enough air, the pump will notice the reduced water pressure and cycle up more frequently to compensate. A good indication of lost air charge is the location of the condensation line. If it’s somewhere in the top 70% of the tank, you’re likely dealing with a loss of air.

Start by checking the air volume control valve for dirt or leaks. In many cases, simply cleaning or replacing the part and pumping air into the tank with a bicycle pump can solve your short-cycling problem.

2. Failed Water Pressure Control Switch

The water pump is tricked by an electronic switch that monitors water pressure inside the tank. If the switch is filled with debris or the contacts have burned out, the system may erratically trigger the pump.

Cleaning the switch may correct the issue, or you may need to have a professional install a replacement.

3. Blockages in the Water Supply Pipe

Dirt or debris in the water supply line will drive up the water pressure, which causes the pump to shut off too soon. Most modern systems feature filters that keep sand and particulates out of your water supply. If your filter is dirty and clogged with debris, cleaning and replacing it may get the pressure back to normal and restore water pump function. 

If your water pump is cycling too frequently, the experts at Elberta Pump Repair & Well Drilling Inc. have the experience to identify the issue and provide fast, cost-effective repairs. Over the past 16 years, their team has built a reputation throughout Alabama’s Mobile and Baldwin counties for reliability and friendly service. Visit their website for more on their broad array of services or call (251) 986-3055 to schedule an inspection.