Low
Fd on Worcester Bosch CDi Classic Regular

Your boiler is simply indicating that the reset button has been triggered, likely by being pressed accidentally instead of the standard operation button.

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 Cdi Classic Regular installation & service manual, page 45.
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

Wait for the boiler to cycle through its internal status checkEnsure no buttons are currently obstructed or held downIf the boiler does not return to normal operation, switch the unit off at the fused spur for 30 seconds and switch it back on

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