BoilerFaultCodesYour boiler has started to fire up but the flame has gone out, meaning the system has shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flame loss
What causes this fault?
This fault occurs when the boiler's control system detects that a flame was momentarily lit but couldn't be maintained, causing it to shut down for safety. The most common reasons are a lack of gas reaching the burner, a dirty internal sensor that cannot 'see' the flame, or a fault with the ignition components. It essentially means the boiler started to produce heat but lost its power source almost immediately.
This fault is more common in winter, as frozen external gas meters or pipes can restrict the gas flow required to keep the flame lit.
DIY fix possible
Check that your gas supply is turned on at the meterIf you have a prepay meter, check that you have remaining creditReset the boiler by pressing the reset button or turning the control knob to 'reset' and back
Find a Gas Safe engineer
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Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like F2 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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