How much does it cost to fix Worcester Bosch error code 115?

Typical repair cost for the Worcester Bosch 115 fault is £150-250 including labour.

115 High

Worcester Bosch 115 Fault Code

Q: What does the Worcester Bosch 115 fault code mean?

Your boiler has identified an internal configuration mismatch, as the internal chip installed is designed for a different type of heating system than the one you are currently using.

The Worcester Bosch 115 fault code means: your boiler has identified an internal configuration mismatch, as the internal chip installed is designed for a different type of heating system than the one you are currently using.. It appears on 3 Worcester Bosch models in our database.

Technical description: Code plug for 24i System LPG

Typical repair cost £150-250 (including labour)

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 115 fault code

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

Source

Worcester Bosch 115 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