BoilerFaultCodesWorcester Bosch 2924 Fault Code
The Worcester Bosch 2924 fault code means: your boiler has detected an internal electrical problem that is preventing it from starting up safely.. It appears on 4 Worcester Bosch models in our database.
Technical description: Boiler electr. system fault
What causes the Worcester Bosch 2924 fault?
This fault occurs when the boiler's main control board fails its internal safety checks during the startup sequence. It is often caused by a communication error between the electrical components or a physical failure within the printed circuit board itself. In some cases, a power surge or moisture ingress can damage the delicate circuitry, leading to this total system shutdown.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Worcester Bosch models that show the 2924 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 2924 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 Greenstar 1000 manual (PDF)
- Worcester Bosch Greenstar 2000 manual (PDF)
- Worcester Bosch Greenstar 27CDi manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026