Why does my constant pressure pump turn on & off when no water is being used?

Why does my constant pressure pump turn on & off when no water is being used?

You will more than likely have a small leak somewhere, if the pump is connected to the internals of the home. The first place to check is the toilet, in most case the washer in the toilet system is leaking letting water in, place a piece of toilet paper in the back of the toilet pan, if the paper gets wet, you have a leak.