BoilerFaultCodesYour boiler is performing a routine automatic diagnostic check to ensure internal components are working correctly.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Self check
What causes this fault?
This code appears when the boiler's internal computer begins a scheduled test of the sensors and safety components to ensure everything is operating safely. It is not triggered by a broken part, but rather by the system's own software performing a routine health check on itself. Once the test is finished, the code will disappear and the boiler will return to its normal heating mode.
DIY fix possible
Wait up to 60 seconds for the code to disappear automaticallyIf the code persists, try turning the selector switch to 'Reset' and back to 'ON'Check that the boiler has sufficient water pressure (usually between 1.0 and 1.5 bar)
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