Worcester Bosch Overheat Cut-off Fault Code
Also written as OVERHEATCUTOFF — same fault.
The Worcester Bosch Overheat Cut-off fault code means: your boiler has switched itself off because it has detected an unsafe rise in internal temperature and needs to cool down before it can restart.. It appears on 4 Worcester Bosch models in our database.
Technical description: Both the central heating and the hot water demand indicators will flash together.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Worcester Bosch models that show the Overheat Cut-off fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch Overheat Cut-off fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.
- Worcester Bosch 24CDi BF manual (PDF)
- Worcester Bosch 24i RSF manual (PDF)
- Worcester Bosch 24si II manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026