Coffee machines are built to deliver consistent, high-quality drinks, but over time even the best machines can develop faults. From heating issues and poor water flow to milk frothing problems and unexpected leaks, most issues are caused by a small number of common factors such as limescale build-up, blockages, worn components, or incorrect settings. The good news is that many of these problems can be identified and resolved quickly once you know what to look for. Use the sections below to find the issue that best matches your machine and access clear, step-by-step guidance to get it back up and running.