BoilerFaultCodesWorcester Bosch 208 0 Fault Code
Also written as 2080 — same fault.
The Worcester Bosch 208 0 fault code means: your boiler is currently stuck in a professional test mode used by engineers to check emissions, often caused by a button being held too long or a recessed switch becoming stuck.. It appears on 3 Worcester Bosch models in our database.
Technical description: Chimney sweep demand
DIY fix possible
Locate the chimney sweep button (indicated by a small radiator/bin icon) on the control panel.Press and hold the button for at least 5 seconds until the display returns to normal temperature readings.If the code persists, try turning the boiler off at the main power switch for 30 seconds and then back on.
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Worcester Bosch models that show the 208 0 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 208 0 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