Low
Fd on Worcester Bosch Ri 25 HE

Your boiler has entered a temporary safety mode because the reset button was held down for too long, essentially causing a software lock.

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 (pressed for more than 30 seconds)

From this model's manual
Verified against the Worcester Bosch Greenstar 25i Zwb 7 25 installation & service manual, page 43.
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 fused spur or mains power supply.Wait for 60 seconds to allow the internal memory to reset.Switch the power back on and, if necessary, press the reset button once briefly.

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