Flue spillage device Emergency

Worcester Bosch Flue spillage device Fault Code

Also written as FLUESPILLAGEDEVICE — same fault.

The Worcester Bosch Flue spillage device fault code means: your boiler has detected that gases are not safely escaping through the flue and has shut itself down to protect your home from harmful fumes.. It appears on 1 Worcester Bosch model 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: The D.H.W. demand indicator will flash (approximately 5 times per second).
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 Flue spillage device fault code

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

Source

Worcester Bosch Flue spillage device 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