Boiler Fault Diagnosis

What boiler fault diagnosis covers

A structured check of your boiler and heating controls to find the root cause of the problem and confirm safe operation.

• Investigation of fault codes, lockouts and intermittent failures
• Checks for no heating, no hot water, low pressure, leaks or unusual noises
• Testing of key components and electrical connections
• Inspection of condensate pipework and basic system issues affecting operation
• Repairs or part replacement where appropriate (subject to approval)
• Safety checks and confirmation the boiler is running correctly after work

When this service is right for you

Book a diagnosis if your boiler has broken down, keeps cutting out, or your heating or hot water is unreliable. It’s also suitable when radiators are not heating as expected, the boiler pressure keeps dropping, or you’ve had repeated resets with no lasting fix.

What happens during the visit

Your engineer will ask about the symptoms, then inspect the boiler, controls and visible pipework. They will test likely causes, interpret any error codes, and narrow down the fault using measured checks rather than guesswork. If a repair is straightforward and parts are available, it can often be completed during the same visit.

After diagnosis: repairs, reporting and next steps

You will be told what caused the fault, what has been done, and what to expect next. If further work or parts are needed, you will receive clear options and costs before anything proceeds. You will also get practical advice to reduce the chance of repeat issues, such as pressure management and servicing intervals.