BoilerFaultCodesWorcester Bosch POINT D Fault Code
Also written as POINTD — same fault.
The Worcester Bosch POINT D fault code means: your boiler is failing to ignite the burner at the required power, meaning it cannot provide heating or hot water.. It appears on 4 Worcester Bosch models in our database.
Technical description: Burner does not instantly operate at or near maximum gas pressure / 230V at pin 1 of terminal X4 (Brown wire)
What causes the Worcester Bosch POINT D fault?
This fault occurs when the boiler's control system attempts to fire the burner at full power but fails to detect the necessary electrical signal or gas pressure. It is typically caused by a failing gas valve that cannot open fully or a fault within the internal control box that prevents power from reaching the ignition components. In some cases, a loose or damaged wiring connection between these two parts is the root cause.
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 POINT D fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch POINT D 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