Low
FD on Worcester Bosch Greenstar 25Si Compact ErP

Your boiler is showing this code simply because the reset button was held down for too long or pressed by mistake, which has confused the internal software.

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

Mains power error - electrical power interruption

From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Greenstar Si Compact Erp installation & service 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

Press the reset button firmly once and release it immediately.Wait up to 30 seconds for the boiler to clear the code and restart.If the code persists, turn the power to the boiler off at the wall switch, wait one minute, and turn it back on.

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Related fault codes

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All 52 fault codes on the Greenstar 25Si Compact ErP

Seeing a different code? Every code this model can display, in one place.

8C8E9A9U212213229234241260261276277278280285328338380A1A3A7A8b7C1C4C6C7CCCECFD1D3D4E2E3E4E5E9EAECEDEEEFF0F7FAFbH5H11H13

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