BoilerFaultCodesWorcester Bosch F0262 Fault Code
The Worcester Bosch F0262 fault code means: your boiler's main internal computer or its configuration chip has developed a fault and can no longer communicate correctly with the rest of the system.. It appears on 1 Worcester Bosch model in our database.
Technical description: Control box or the heat control module (HCM) is defective – HCM or control box connections need to be checked
What causes the Worcester Bosch F0262 fault?
This fault occurs when the boiler's main control board loses its memory or fails to establish a secure handshake with the small identification chip plugged into it. It is often caused by an internal electrical short within the circuitry or a loose connection between the module and the main board. Essentially, the boiler has 'forgotten' its own settings and can no longer operate safely.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Worcester Bosch models that show the F0262 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch F0262 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