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

Typical repair cost for the Worcester Bosch Noisy operation fault is £180-350 including labour.

Noisy operation Medium

Worcester Bosch Noisy operation Fault Code

Q: What does the Worcester Bosch Noisy operation fault code mean?

Your boiler is making unusual rattling or grinding noises, which usually suggests there is trapped air in the system or a internal mechanical part is starting to wear out.

Also written as NOISYOPERATION — same fault.

The Worcester Bosch Noisy operation fault code means: your boiler is making unusual rattling or grinding noises, which usually suggests there is trapped air in the system or a internal mechanical part is starting to wear out.. It appears on 7 Worcester Bosch models in our database.

Technical description: Pump noise from air in pump or worn pump; Worn motor bearings; Fan out of balance

Typical repair cost £180-350 (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 Noisy operation fault code

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

Source

Worcester Bosch Noisy operation 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