Your Keurig is obsessed with water flow. If it senses a blockage, it locks down like a grumpy bouncer. Mineral scale (that chalky stuff from tap water) is enemy number one. It builds up in the tubes like tiny limestone tunnels.
Think of it this way: your machine is a tiny, stubborn plumber. It refuses to work until the pipes are clear. The solution is simple: descaling. Use white vinegar or a special Keurig solution. Run a few cycles—and prepare for a battle of patience.
Fun fact: if you live in a hard-water area, your Keurig might throw a tantrum every six months. It’s not personal. It’s just calcium being a jerk.
