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ECO-button not lit on Worcester Bosch Greenstar 4000 Combi

Your boiler is currently set to an energy-saving mode, which is why the ECO light is off, but it is operating normally and is not experiencing a fault.

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

Economy 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 for a few seconds to toggle the modeObserve the light turning on to confirm economy mode is active

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