BoilerFaultCodesWorcester Bosch FAIL POINT H Fault Code
Also written as FAILPOINTH — same fault.
The Worcester Bosch FAIL POINT H fault code means: your boiler has failed to light the flame or detects that the flame has gone out, causing the system to shut down for safety.. It appears on 4 Worcester Bosch models in our database.
Technical description: Flashing slow (Burner Lockout)
What causes the Worcester Bosch FAIL POINT H fault?
This fault occurs when the boiler attempts to start up but cannot successfully ignite the gas to create a flame, or if the flame is lost during operation. The most common reasons include a lack of gas supply to the unit, worn-out ignition components that can no longer create a spark, or a build-up of carbon on the sensor that detects the heat.
This issue can become more frequent during the first cold snap of winter when components that have been idle over summer are suddenly put under heavy strain.
DIY fix possible
Check if other gas appliances, like a cooker, are working to ensure gas is reaching the propertyCheck that your prepaid gas meter has sufficient creditPress and hold the reset button for five seconds to see if the boiler restarts
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Gas Safe Register →Worcester Bosch models that show the FAIL POINT H fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch FAIL POINT H 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