[Shane826]

Yeah it’s normal. It turns on and off based on pressure. Runs for a second, pressurizes the plumbing even though there’s a trickle at the faucet, shuts off, trickle depletes pressure, pump pulses back on, lather, rinse, repeat.

When you get to about half throttle at the faucet the pump can’t pressurize the plumbing as fast as the water is flowing out of the faucet so it just stays on constant until you close the faucet then the pump runs a couple seconds longer until the plumbing is pressurized and then the pump shuts off.