BoilerFaultCodesYour boiler is failing to light the gas or keep the flame burning, which means your heating and hot water will not work.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Ignition, pilot or flame proving fault
What causes this fault?
This fault occurs when the boiler tries to light but fails to detect a stable flame, causing it to shut down for safety. The most common reasons are a worn-out spark electrode that cannot create a spark, or a faulty gas valve that isn't releasing fuel into the burner.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
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