Low
Fd on Worcester Bosch Greenstar System

Your boiler is simply indicating that the reset button was pressed when there wasn't an actual fault, so it just needs a moment to restart 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 System installation & service manual, page 40.
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

Switch the boiler off at the mains power supplyWait for 60 secondsSwitch the power back on to allow the system to perform a self-check

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