Low
FD on Worcester Bosch Greenstar 30i

Your boiler thinks the reset button was pressed by mistake or for too long and just needs a quick second tap 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.

What the manual says

Manufacturer manual

Reset button pressed by mistake – press reset button again.

Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s 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 reset button on the front control panel.Press and release the reset button once (do not hold it down).Wait approximately 15 seconds for the boiler to restart into its normal mode.

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