ECO-button flashes Low

Worcester Bosch ECO-button flashes Fault Code

Also written as ECOBUTTONFLASHES — same fault.

The Worcester Bosch ECO-button flashes fault code means: your boiler has encountered a minor operational hiccup and needs a simple manual restart to clear the error.. 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: Fault Condition - press and hold-in to reset the appliance.

DIY fix possible

Locate the ECO button on the front control panel of your boiler.Press and hold the ECO button firmly for approximately 5 to 10 seconds.Release the button and wait for the light to stop flashing, indicating the boiler has reset and is ready to operate.

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Worcester Bosch models that show the ECO-button flashes fault code

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

Source

Worcester Bosch ECO-button flashes 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 7 July 2026