210 Emergency

Worcester Bosch 210 Fault Code

The Worcester Bosch 210 fault code means: your boiler has detected an issue with the ventilation system that clears exhaust gases, so it has safely shut down to prevent any risk of fumes entering your home.. It appears on 5 Worcester Bosch models in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: E9 Flue-gas thermostat or Air pressure switch activated
Typical repair cost £150-300 (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 210 fault code

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

Source

Worcester Bosch 210 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