Fault codes vary by manufacturer, and understanding them correctly is key to diagnosing and fixing your coffee machine quickly. Each brand uses its own system of error codes, warning messages, or symbols to highlight specific issues, from scale build-up and water flow problems to internal component faults. By selecting your machine’s brand below, you can find a dedicated fault code guide tailored to your model, helping you identify the issue and take the right action to get your machine back up and running.