Category: Baxi Fault Codes

If your Vaillant boiler is showing the F35 fault code, it means there’s an issue with the air/flue gas duct system. This is a critical part of your boiler that ensures safe combustion and ventilation. When it goes wrong, your boiler may lock out for safety reasons. What Does the Vaillant F35 Fault Code Mean?…

If your boiler shows the Vaillant F1 fault code, it’s flagging an ignition failure. In plain English: the boiler tried to light but couldn’t. This is often linked to gas supply issues, faulty ignition leads/electrodes, or a control fault. Because it concerns gas and combustion, don’t carry out gas work yourself book a Gas Safe…

If your boiler shows the Vaillant F57 fault code, it’s flagging an ignition issue often the ignition electrode (or its wiring) in comfort safety mode. In plain English: the boiler tried to light and didn’t get a reliable flame signal. Common Causes of the Vaillant F57 Fault Code What You Can Do (Homeowner Checklist) Engineer-Level…

A working boiler is important to keep your home warm and provide hot water. If you have a Worcester Greenstar boiler, it’s useful to know how to reset it when there’s a problem. Often, if the issue is small or temporary, a quick reset can fix it and get your boiler working again without needing…

If your Vaillant boiler is displaying the F24 fault code, it’s an indication that there is an issue with water circulation in the system. This safety measure is designed to prevent potential damage caused by insufficient water flow, which can overheat the boiler. Understanding the causes, symptoms, and solutions will help you restore your heating…

If your Vaillant boiler is showing the F74 fault code, it means the boiler’s water pressure sensor is detecting readings outside the expected range. In simple terms, the boiler thinks there’s an issue with system pressure, even if it might just be a faulty signal. This code is a safety feature designed to protect your…

If you own a Vaillant Ecotec Pro or Ecotec Plus boiler, you may have encountered the Vaillant boiler F72 fault code. This error can disrupt your hot water and central heating, leaving your home cold and uncomfortable. In this guide, we’ll explain what the F72 fault code means, its common causes, and a step-by-step approach…

If your Vaillant boiler displays the F84 fault code, it can be confusing and concerning. This guide will help you understand what it means, its symptoms, causes, and most importantly, how to fix it safely. Symptoms of the Vaillant F84 Fault Code You may notice one or more of the following symptoms if your boiler…

When your Worcester boiler shows a C6 fault code, your boiler often stops because the fan does not run correctly. The fan keeps combustion safe and moves flue gases outside. A faulty fan can affect performance and safety. This guide explains what worcester bosch C6 fault code means, how C6 215 and C6 216 differ,…

When you see 1101 fault code on a Worcester boiler, your heating can stop without warning. You may also see a flashing warning triangle on the display. The boiler needs a working thermostat link to control heat demand. When the thermostat loses power or loses communication, the boiler stops and shows 1101. You can often…