5 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Ace High
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Your boiler has failed to ignite and cannot establish a flame, likely because it is not properly recognising its internal control settings or requires a part replacement.
Your boiler has stopped working because it failed to light the flame, so it has purposefully shut down for safety.
Your boiler has stopped working because it failed to light the flame, which often happens due to a simple supply issue or a temporary glitch.
Your boiler has automatically turned itself off because it got too hot, likely to prevent internal damage or overheating.
Your boiler has stopped working because it failed to light or has become too hot, causing a safety shutdown to protect your home.
Not faults — these are normal operating states. Tap to expand.
BoilerFaultCodes