Well pressure switch does not turn on until no water at fauset

There's a small tube that runs from your pump to the control box. Disconnect it and see if pressure co9mes out. Check it to be sure it's not clogged. Open up the control box when the pump's up to pressure and turn on a hose bib to bleed the system down. Tell me at what PSI the contacts energize and start the pump. If the small tube's clear you might consider replacing the control box. Good luck, tom