BoilerFaultCodesWorcester Bosch 76 Fault Code
The Worcester Bosch 76 fault code means: your boiler's main control board has detected a setup error, meaning it no longer recognises which specific model it is meant to be.. It appears on 1 Worcester Bosch model in our database.
Technical description: Incorrect SFC
What causes the Worcester Bosch 76 fault?
This fault occurs when the boiler's main control board loses its identity and can no longer confirm the specific power output it should be producing. The most common reason is a hardware communication failure between the central circuit board and the small 'identity plug' that stores the unit's settings. In many cases, this is triggered by an electrical surge or a component failing due to age.
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 76 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 76 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