BoilerFaultCodesWorcester Bosch FC Fault Code
The Worcester Bosch FC fault code means: your boiler's main control panel has lost communication with the internal computer, meaning it cannot display status messages or operate correctly.. It appears on 9 Worcester Bosch models in our database.
Technical description: Text display not detected.
What causes the Worcester Bosch FC fault?
This fault occurs when the boiler's main internal computer loses its connection with the digital screen on the front of the unit. The most common reason is a loose or damaged ribbon cable that transmits data between the two components, or a electronic failure within the display board itself. Essentially, the 'brain' of the boiler is still working, but it can no longer send information to the screen you see.
DIY fix possible
Press the Reset button for five secondsTurn the main power switch to the boiler off and then back on againCheck if the display panel is firmly clicked into its housing
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Gas Safe Register →Worcester Bosch models that show the FC fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch FC 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