BoilerFaultCodesWorcester Bosch 2961 Fault Code
The Worcester Bosch 2961 fault code means: your boiler has stopped working because the internal computer cannot communicate with the fan that safely clears away exhaust fumes.. It appears on 8 Worcester Bosch models in our database.
Technical description: No fan signal available
What causes the Worcester Bosch 2961 fault?
This fault occurs when the boiler's main control board loses its electronic connection with the fan motor, which is responsible for pulling fresh air in and pushing exhaust gases out. The most common reason is a mechanical failure within the fan itself or a loose connection in the internal wiring that prevents the computer from confirming the fan is spinning safely.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Worcester Bosch models that show the 2961 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 2961 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