BoilerFaultCodesYour boiler has encountered a general error and needs to be restarted to see if the system can clear the fault itself.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: A fault has occurred - to reset, press and hold the reset button for five seconds. If the fault remains or recurs then contact Worcester Bosch Service Department.
What causes this fault?
This fault occurs when the boiler's internal control system detects an inconsistency or failure during the ignition or operating cycle. The most common reasons include a failure to strike a spark, a signal interruption between the main control board and the internal components, or a fan that is not reaching the required speed. It essentially acts as a safety 'stop' to prevent the boiler from operating under uncertain conditions.
DIY fix possible
Locate the reset button on the front control panel.Press and hold the reset button for exactly five seconds.Wait for the light to stop flashing and see if the boiler ignites.
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A boiler cover plan would cover faults like Fast flashing reset button — no call-out fees, no surprises.
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Worcester Bosch Greenstar 12i System is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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