BoilerFaultCodesYour boiler is not starting because it cannot light the gas flame needed to heat your water.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: No ignition – control gas supply line valves could be open
What causes this fault?
This fault occurs when the boiler attempts to start but cannot detect a flame after several attempts. It is usually caused by a lack of gas reaching the burner, a faulty spark plug that cannot ignite the gas, or a sensor that fails to tell the boiler that a flame is present.
This issue can occur in winter if the external gas regulator freezes or if the gas meter is under-delivered during periods of high demand.
DIY fix possible
Check that your gas emergency control valve (lever) is in the 'on' position.If you have a prepay gas meter, ensure you have sufficient credit.Check if other gas appliances in your home, like a hob, are working correctly.Press and hold the 'R' or reset button to see if the boiler restarts.
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
A boiler cover plan would cover faults like rE06 — 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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