BoilerFaultCodesWorcester Bosch 2910 Fault Code
The Worcester Bosch 2910 fault code means: your boiler is struggling to safely expel exhaust gases, which has caused the system to shut down for safety.. It appears on 8 Worcester Bosch models in our database.
Technical description: Fault in flue system
What causes the Worcester Bosch 2910 fault?
This fault occurs when the boiler's internal safety sensors detect that the flue system is obstructed or unable to clear exhaust fumes effectively. The most common reason is a blockage or restriction in the flue pipe itself, or a mechanical failure in the fan that is responsible for pushing gases out of your home.
This fault is more common during periods of high winds, which can cause pressure imbalances in the flue, or during freezing temperatures if ice builds up around the flue terminal.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Worcester Bosch models that show the 2910 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 2910 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