BoilerFaultCodesWorcester Bosch HrE Fault Code
Also written as HRE — same fault.
The Worcester Bosch HrE fault code means: your boiler is experiencing a critical control system failure that causes it to shut down and attempt to restart itself repeatedly.. It appears on 10 Worcester Bosch models in our database.
Technical description: The boiler keeps resetting
What causes the Worcester Bosch HrE fault?
This fault occurs when the boiler's internal computer system loses its place or experiences a communication break, forcing it to constantly reboot to try and clear the error. It is typically caused by a failing electronic control board or a loose connection in the wiring that prevents the main components from talking to each other properly.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Worcester Bosch models that show the HrE fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch HrE 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