Category: Baxi Fault Codes

If your Vaillant boiler has suddenly stopped working and is showing the Vaillant Boiler F54 Fault Code, it means the system has detected insufficient gas supply. In simple terms, the boiler isn’t receiving enough gas to ignite or keep the flame burning, so it shuts down as a safety precaution. What is the Vaillant F54…

Seeing the Vaillant F20 fault code on your ecoTEC boiler? Don’t panic. This error means the boiler has detected overheating and has locked out to protect itself and your home. Below, you’ll find what it means, the most common causes, and clear steps to fix it what you can safely check yourself, and what a…

If your Vaillant boiler displays the Vaillant Boiler F32 fault code, it’s warning you of an air / fan system fault. This error often appears with a humming noise and can stop the boiler from igniting leaving you without hot water or central heating. Below is a clear guide that explains what F32 means, common…

If you own a Vaillant boiler, maintaining the correct boiler pressure is essential for efficient heating and hot water supply. Low pressure can lead to system faults, such as the F22 error code, while high pressure can cause leaks or damage. In this guide, we’ll walk you through the common causes of low boiler pressure,…

If your Vaillant boiler is showing the F29 fault code, it means the boiler flame has stopped lighting. Essentially, your boiler is unable to ignite, which prevents it from heating water or providing central heating. This is a common issue in Vaillant ecoTEC boilers and usually occurs due to problems with the gas supply or…

If you own a Baxi boiler, encountering the E164 fault code can be frustrating. This error typically signals an ignition failure or a problem with the flow switch, resulting in the boiler failing to ignite or shutting down unexpectedly. In this article, we’ll explore the common causes of E164 and provide practical troubleshooting steps to…

If you’ve noticed the Baxi Boiler E09 fault code on your boiler, it’s signaling an issue with the gas valve connection cable. This fault can disrupt communication between your boiler’s gas valve and the main control board, potentially affecting the performance and safety of your heating system. While it’s tempting to try a DIY fix,…

If your Baxi boiler has displayed the E385 fault code, it usually points to an under-voltage issue. In simple terms, your boiler isn’t getting the right amount of electrical power to function correctly. This fault can be triggered by several factors, from minor wiring problems to more serious PCB (Printed Circuit Board) faults. In this…

If your Baxi boiler is showing the E156 fault code, it usually points to a low voltage (under-voltage) issue typically when the supply drops below 195V. This fault prevents the boiler from running safely, and while sometimes it’s a quick fix, in other cases it needs a Gas Safe engineer’s attention. In this guide, we’ll…

If your Baxi boiler is showing the E10 fault code, don’t panic it usually points to an outdoor sensor fault. This sensor helps your boiler regulate its performance by measuring the outside temperature. When the sensor fails or disconnects, the boiler cannot adjust properly, and the Baxi E10 fault code appears. In this guide, we’ll…