Vaillant Boiler Fault Codes: What They Mean and How to Fix ThemIntroduction: Reliable Heating, Your Peace of MindA warm, comfortable home is something every family values, especially during the colder months. But what happens when your Vaillant boiler starts showing a fault code? For many homeowners, this can be a source of frustration and worry. Understanding what these fault codes mean and knowing how to address them can save you time, money, and unnecessary stress.In this blog, we’ll walk ...