Worcester Bosch E9 219 Fault Code
Also written as E9219 — same fault.
The Worcester Bosch E9 219 fault code means: your boiler has detected that it is running much too hot and has automatically shut itself down to prevent any damage or safety issues.. It appears on 2 Worcester Bosch models in our database.
Technical description: Safety sensor temperature too high - The main heat exchanger has overheated. Maximum temperature 105C°
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 E9 219 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch E9 219 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 12i System manual (PDF)
- Worcester Bosch Greenstar CDi Compact manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026