BoilerFaultCodesYour boiler isn't broken; it has simply been left in a manual 'test mode' used by engineers, and needs to be switched back to its normal setting.
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: Not a fault code. Service mode selected to max, press service button to return to normal.
What causes this fault?
This occurs because the 'service' button on the control panel was pressed, which puts the boiler into a manual testing mode. This is usually done by an engineer during a service to force the burner to its maximum output, and the flashing light is simply a status indicator showing the mode is active. It is not an internal component failure, but rather a functional setting that hasn't been switched back to normal operations.
DIY fix possible
Locate the 'Service' button (usually marked with a spanner icon).Press and hold the Service button for a few seconds until the light stops pulsing.The boiler should return to its normal operating mode automatically.
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A boiler cover plan would cover faults like 5 pulses (No light) — no call-out fees, no surprises.
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Worcester Bosch Greenstar 24i Junior 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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