How much does it cost to fix Worcester Bosch error code NO LIGHTS AT ALL?

Typical repair cost for the Worcester Bosch NO LIGHTS AT ALL fault is £120-250 including labour.

NO LIGHTS AT ALL High

Worcester Bosch NO LIGHTS AT ALL Fault Code

Q: What does the Worcester Bosch NO LIGHTS AT ALL fault code mean?

Your boiler has lost all power and is completely unresponsive, meaning it cannot provide heating or hot water until the electrical connection is restored.

Also written as NOLIGHTSATALL — same fault.

The Worcester Bosch NO LIGHTS AT ALL fault code means: your boiler has lost all power and is completely unresponsive, meaning it cannot provide heating or hot water until the electrical connection is restored.. It appears on 2 Worcester Bosch models in our database.

Technical description: No permanent live supply to control board, investigation of electrical supply from external system required, or control board fuse F1 blown.

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 NO LIGHTS AT ALL fault code

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

Source

Worcester Bosch NO LIGHTS AT ALL 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