Low
Fd on Worcester Bosch Greenstar Si Combi / i System

Your boiler has stopped because the reset button was held down for too long or pressed accidentally while the unit was running normally.

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

Reset button pressed by mistake

From this model's manual
Verified against the Worcester Bosch Greenstar Si Combi I System installation & service manual, page 52.
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

Press the reset button once firmly but brieflyWait for approximately 30 seconds for the boiler to restart its ignition sequenceEnsure no other error codes appear on the display

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