Well Pressure Switch: Part 1 — Well Pump Won’t Turn On or Shut Off? Fix a Clogged Pressure Switch

Is your water pump acting erratic? In this video, I diagnose and repair a faulty well pressure switch that was causing my system to hit dangerously high pressures (over 75 psi). Whether your pump won’t turn on or refuses to shut off, the issue is often a simple blockage rather than a broken motor. WHAT YOU’LL LEARN I’ll show you exactly how to remove the pressure switch safely, why the vertical nipple is the most common point of failure, and how the internal diaphragm and spring tension work to control your home's water pressure. THE WARNING SIGN I found water on the floor from the pressure relief valve—a clear sign of a blockage. PRO TIP Always remove the switch with the vertical nipple attached. Sediment builds up inside that small pipe, and if you leave it behind, your new switch will clog instantly. ENGINEERING NOTE As an engineer, I prioritize safety. A pressure relief valve is a non-negotiable safety feature that prevents burst pipes and motor burnout. THE FINDINGS Heavy calcification and sand/clay were blocking the sensing mechanism. NEXT STEPS In the next video, I'll walk you through the full cleaning process and how to put this 20-year-old switch back into service. Subscribe so you don't miss it! #WellPump #PressureSwitch #DIYRepair #Plumbing #Homesteading #EngineerFix #HomeMaintenance #WaterPressure