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My boiler has broken down and is displaying a fault code, what should I do?

Writer: MCS HeatingMCS Heating

If your boiler has an error message, make sure to note it down before you reset the boiler. The error code can be crucial information for an engineer to get to the bottom of what stopped the boiler from working.


In general the fault code will be a simple two character reference such as 'F2' or 'EA'. Some more advance boilers will give a brief description of the fault.


You may be able to look in your boilers installation manual and check what the fault code relates to, this can generally be found in the back section of the large instruction book supplied with your boiler. We do not recommend taking the boiler front cover off to have a look, this can disturb safety critical seals and make your boiler potentially unsafe.


If your error code refers to low pressure, you will need to top the system pressure up via the filling loop.

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