Slow flashing reset button Low

Worcester Bosch Slow flashing reset button Fault Code

Also written as SLOWFLASHINGRESETBUTTON — same fault.

The Worcester Bosch Slow flashing reset button fault code means: your boiler is working normally, but it is providing a friendly reminder that its annual safety and maintenance service is now due.. It appears on 1 Worcester Bosch model in our database.

Monitor it

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: The appliance has a service reminder - please contact your service engineer.

What causes the Worcester Bosch Slow flashing reset button fault?

This is not a mechanical failure, but a timer-based notification triggered by the control board. It occurs because the boiler has reached a specific interval of internal operating hours or a set calendar date since its last professional inspection. The system uses this feature to ensure the appliance continues to run safely and efficiently by prompting a scheduled check-up.

Typical repair cost £80-120 (including labour)

DIY fix possible

Check your service records to see when the last professional service was carried outContact a Gas Safe registered engineer to book an annual service and safety checkOnce serviced, the engineer will reset the reminder timer for you

Find a Gas Safe engineer

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Worcester Bosch models that show the Slow flashing reset button fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Worcester Bosch Slow flashing reset button fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026