BoilerFaultCodesYour boiler is struggling to maintain a strong flame, which is why it keeps turning off or failing to heat up properly.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Low flame indicator.
What causes this fault?
This fault occurs when the boiler's internal sensor detects that the flame is too weak or unstable to safely heat the system. The most common reasons are a worn-out ignition electrode that can't spark correctly or a gas valve that isn't delivering the right amount of fuel to stay lit.
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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