Low
ECO-button flashes on Worcester Bosch ZB 7 27 HE

Your boiler has encountered a minor operational hiccup and needs a simple manual restart to clear the error.

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.

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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