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ECO-button lit on Worcester Bosch Greenstar 25 HE Combi

Your boiler is currently in 'Comfort Mode', which means it keeps a small amount of water hot inside the unit so that your taps get warm faster.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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.

What the manual says

Manufacturer manual

Comfort mode

From this model's manual
Verified against the Worcester Boiler Rd 542i Combi installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Locate the ECO button on the front control panelPress and hold the ECO button until the light turns off to deactivate Comfort modePress and hold the button again if you wish to re-enable the feature

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