Worcester Bosch 24 SBi RSF Fault codes & diagnostics

1 fault code with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

System Natural GasLPG 1999-2005 Discontinued
GC Numbers 41-311-4441-311-46
Download the Worcester Bosch 24 SBi RSF manualThe official installation and service manual (PDF), the document these fault codes were read from. PDF

The fault code is already on your display

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Fault codes

All 1 documented codes

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lock-out

Your boiler has failed to ignite after several attempts and has switched itself off for safety reasons, meaning it cannot currently provide heat or hot water.

High Engineer only £120-250

Parts commonly replaced

  • Ignition electrode
  • Gas valve
  • PCB
Full explanation for lock-out