BoilerFaultCodesWorcester Bosch 250 Fault Code
The Worcester Bosch 250 fault code means: your boiler's main internal computer has encountered a communication error and needs a reset to try and clear the glitch.. It appears on 7 Worcester Bosch models in our database.
Technical description: System fault boiler electronics / basic controller
What causes the Worcester Bosch 250 fault?
This fault occurs when the boiler's central control board and the internal display unit stop talking to one another properly. The most common reason is a temporary software glitch or a loose connection in the internal wiring that prevents the computer from sending commands to the heating components.
DIY fix possible
Locate the reset button on the boiler's front control panelPress and hold the reset button for five secondsWait for the boiler to restart and check if the error code has cleared
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Worcester Bosch models that show the 250 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 250 fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.
- Worcester Bosch 24/28/35 CDi MkII manual (PDF)
- Worcester Bosch Greenstar 1000 manual (PDF)
- Worcester Bosch Greenstar 2000 manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026