BoilerFaultCodesWorcester Bosch POINT I Fault Code
Also written as POINTI — same fault.
The Worcester Bosch POINT I fault code means: your boiler is struggling to switch between providing heating and hot water, meaning you likely have no hot water available.. It appears on 4 Worcester Bosch models in our database.
Technical description: Diverter valve does not operate (DHW test) / 230V at pin 3 of terminal X7 (Brown wire)
What causes the Worcester Bosch POINT I fault?
This fault occurs when the boiler's internal brain tries to switch the water flow from your radiators to your hot taps but receives no response from the switching mechanism. The most common reason is that the small electric motor responsible for moving the valve has burnt out or the internal valve itself has become seized due to a buildup of debris and sludge within the system.
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 I fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch POINT I 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