BoilerFaultCodesWorcester Bosch FAIL POINT A Fault Code
Also written as FAILPOINTA — same fault.
The Worcester Bosch FAIL POINT A fault code means: your boiler has lost power because it is switched off at the front, there is no electricity reaching the unit, or an internal fuse has blown.. It appears on 4 Worcester Bosch models in our database.
Technical description: Facia on/off switch turned off, or no 230V AC live supply across Terminal ST12 pins L and N, or fuse F1 blown.
What causes the Worcester Bosch FAIL POINT A fault?
This fault occurs when the boiler's internal computer loses its electrical connection, essentially leaving the unit without the power it needs to operate. The most common reasons are that the main power switch on the front panel has been turned off, a fuse on the circuit board has popped, or there is an external issue with the electrical supply to the house. It can also happen if the control board itself has suffered a component failure and can no longer process electricity.
DIY fix possible
Check that the on/off dial on the front of the boiler is set to a 'on' positionEnsure the main electrical isolation switch (usually a white switch near the boiler) is turned onCheck your home's consumer unit (fuse box) to see if a circuit breaker has tripped
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 FAIL POINT A fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch FAIL POINT A 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