Category: Boiler Fault Codes

If you’ve got an Alpha boiler at home (combi or system), an annual service is one of the simplest ways to keep it safe, efficient, and reliable-especially through UK winters. Alpha themselves advise servicing every 12 months, carried out by a Gas Safe registered engineer. This guide explains: Important safety note (please don’t skip) A…

If your Vaillant boiler shows F61, your boiler has stopped for a safety reason. This fault points to a gas valve actuation/control problem. In plain English, the boiler’s electronics cannot control the gas valve correctly, so the boiler locks out to protect you. Vaillant F61 fault code means the boiler cannot actuate (control) the gas…

The Baxi E118 fault code indicates that your boiler’s water pressure has dropped below the safe operating level typically under 1.0 bar causing it to shut down. This common issue is usually quick and simple to fix by repressurising the system using the boiler’s filling loop. Most homeowners can safely resolve it themselves in just…

The Baxi E40 Fault Code is triggered when there’s an issue with the central heating return NTC sensor, a key component that monitors the temperature of water returning from your radiators. If this sensor fails or gives inaccurate readings, your boiler may not heat properly or could shut down for safety. This guide explains what…

If your Baxi boiler is showing the E78 fault code, it means there’s an issue with the water pressure sensor specifically, the boiler is unable to detect the correct system pressure. This can cause your boiler to shut down or work inefficiently, leaving you without heating or hot water. What Does the Baxi E78 Fault…

The Baxi E50 error code typically indicates a temperature sensor fault in your boiler, often triggered by overheating or faulty components. This guide covers the most common causes, practical troubleshooting steps, and the importance of involving a Gas Safe registered engineer. Whether you’re trying to fix the issue yourself or seeking professional help, this post…

If your Baxi boiler is showing the E55 fault code, it means there’s a communication issue between the boiler’s printed circuit board (PCB) and one of its connected components. This can cause the system to shut down as a safety precaution. Fortunately, in many cases, Baxi E55 error issue can be reset easily. Here’s what…

When your Baxi boiler displays the E28 fault code, it usually means there’s a problem with the flue thermistor or a frozen condensate pipe. While some causes require professional attention, you can try resetting the boiler after resolving the issue. In this post, we’ll walk you through how to safely reset the Baxi E28 fault…

Baxi boilers are trusted by homeowners for their performance and reliability. Whether you have a combi, system, or heat-only boiler, you may occasionally see Baxi fault codes appear on the boiler’s display. These codes are designed to help you quickly identify what’s gone wrong. They can range from ignition problems and sensor faults to low…