7 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Chaffoteaux Britony
This boiler uses indicator light combinations
Note which lights are on, off, or flashing and at what speed. Match the combination to the cards below. Do not reset until you have noted the pattern. How to read fault codes →
Tap any card for details
Your boiler has stopped working because it cannot light the gas burner or keep it burning.
Your boiler has stopped working because it cannot light the internal flame or detect that it is staying lit, so it has shut down for safety.
Your boiler has failed to light the flame, so it has safely shut itself down to prevent gas from building up.
Your boiler has stopped working because it failed to light or stay lit, and it needs a manual restart to try again.
Your boiler is signalling that the burner is currently active or that it is struggling to verify the internal status of the heating system.
Your boiler has shut itself down because it detected that it is running too hot, indicating a potential circulation or sensor problem.
Your boiler has stopped working because it failed to start or got too hot, and it now needs to be manually restarted to begin operating again.
BoilerFaultCodes