Noise Medium

Worcester Bosch Noise Fault Code

Also written as NOISE — same fault.

The Worcester Bosch Noise fault code means: your boiler is struggling to pass water through its heating system, which is causing it to make loud, rumbling, or banging noises.. It appears on 1 Worcester Bosch model in our database.

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description: Scale in heat exchanger, High gas rate, or Low water flow rate
Typical repair cost £150-350 (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 Noise fault code

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

Source

Worcester Bosch Noise 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 7 July 2026