How much does it cost to fix Worcester Bosch error code E9 276?

Typical repair cost for the Worcester Bosch E9 276 fault is £120-£350 including labour.

E9 276 High

Worcester Bosch E9 276 Fault Code

Q: What does the Worcester Bosch E9 276 fault code mean?

Your boiler has shut down because the water inside it has become dangerously hot and reached a level that risks damaging the internal components.

Also written as E9276 — same fault.

The Worcester Bosch E9 276 fault code means: your boiler has shut down because the water inside it has become dangerously hot and reached a level that risks damaging the internal components.. It appears on 12 Worcester Bosch models in our database.

Technical description: Primary flow temperature exceeded 95°c

Typical repair cost £120-£350 (including labour)

DIY fix possible

Check if any radiator valves are turned off and open them fully to allow water to circulate.Ensure your system water pressure is between 1.0 and 1.5 bar on the pressure gauge.Wait for the boiler to cool down and then press the 'Reset' button.

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Worcester Bosch models that show the E9 276 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Worcester Bosch E9 276 fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026