Blue indicator light flashing High

Worcester Bosch Blue indicator light flashing Fault Code

Q: What does the Worcester Bosch Blue indicator light flashing fault code mean?

Your boiler is signalling a general internal fault that has caused it to stop working to ensure your safety.

Q: How much does it cost to fix Worcester Bosch error code Blue indicator light flashing?

Typical repair cost for the Worcester Bosch Blue indicator light flashing fault is £120-250 including labour.

Also written as BLUEINDICATORLIGHTFLASHING — same fault.

The Worcester Bosch Blue indicator light flashing fault code means: your boiler is signalling a general internal fault that has caused it to stop working to ensure your safety.. It appears on 2 Worcester Bosch models in our database.

Technical description: Fault condition

Typical repair cost £120-250 (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 Blue indicator light flashing fault code

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

Source

Worcester Bosch Blue indicator light flashing 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