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

Typical repair cost for the Worcester Bosch 276 fault is £150-350 including labour.

276 High

Worcester Bosch 276 Fault Code

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

Your boiler has detected that the water inside it has become dangerously hot and has temporarily shut itself down to prevent damage.

The Worcester Bosch 276 fault code means: your boiler has detected that the water inside it has become dangerously hot and has temporarily shut itself down to prevent damage.. It appears on 1 Worcester Bosch model in our database.

Technical description: Flow temperature exceeds 95°C Primary overheat - boiler waits for temperature to reduce; if not it becomes a Locking error.

Typical repair cost £150-350 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Worcester Bosch models that show the 276 fault code

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

Greenstar CDi Compact Repair: £150-350

Source

Worcester Bosch 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