Find clear guides to boiler error codes, common faults and everyday problems, with simple steps to pinpoint the cause and fix it faster. Save time with practical help that explains what each warning means and how to act without guesswork. Ideal when you need a quick, easy solution and want to get your boiler working again.

The exact model and display sequence help assess the message without mistaking it for a low-pressure fault.

F13 does not mean the same thing on every model. Identify your boiler before attempting a reset or buying a sensor.

A6 alone cannot identify a faulty part. Confirm the boiler model before resetting it or paying for a replacement.

Pressure helps narrow down the fault, but it is not the whole story. These signs help you decide without opening the boiler.

The model determines what this fault means. Separate safe external checks from work that needs a qualified engineer.

A circulation fault does not necessarily mean a failed pump. Understand the possible causes and safe external checks.

What a thermal lockout means, why a reset may not solve it and which external checks are safe.

E1 and E15 are not interchangeable. Identifying the model helps prevent needless resets and incorrect replacement parts.

FD does not automatically mean a new circuit board: the boiler model and proper checks determine the diagnosis.

The fault concerns burner shutdown: what you can safely observe and what a qualified engineer needs to check.

04 and F4 do not necessarily mean the same thing. The boiler model determines which checks and diagnosis are needed.

An ignition fault does not identify a broken part. What you can check safely and when to stop resetting the boiler.