Why is my coffee machine light on but not working?
If your coffee machine is powering on but not brewing, the culprit might be a blocked water line or heating element. Mineral buildup from hard water can clog these components, preventing the water from reaching the right temperature or flowing into the brew basket[^2^]. If the water can’t reach its optimal brewing temperature, it is impossible to extract the full flavor from your coffee beans. Mineral scale buildup can clog water flow, and if not removed, can cause a machine to stop working. Your coffee won’t be hot enough to enjoy.