2955 B High

Worcester Bosch 2955 B Fault Code

Also written as 2955B — same fault.

The Worcester Bosch 2955 B fault code means: your boiler is struggling to keep a flame going even though it is trying to run at full power, meaning it cannot provide heating or hot water until the issue is resolved.. It appears on 1 Worcester Bosch model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: No flame signal with high output.
Typical repair cost £120-£350 (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 2955 B fault code

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

Source

Worcester Bosch 2955 B 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