Steady blue Low

Worcester Bosch Steady blue Fault Code

Also written as STEADYBLUE — same fault.

The Worcester Bosch Steady blue fault code means: your boiler is currently in a manual reset mode and simply needs you to confirm you want it to restart.. 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: Reset button pressed by mistake. Press reset button again.

DIY fix possible

Locate the reset button on the front control panel.Press and release the reset button once (do not hold it down for a long time).Wait a few seconds for the blue light to stop flashing or go out, and the boiler should resume normal operation.

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Worcester Bosch models that show the Steady blue fault code

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

Source

Worcester Bosch Steady blue 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