BoilerFaultCodesYour boiler has failed to light after several attempts and has locked itself out 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: Ignition Lockout
What causes this fault?
This fault occurs when the boiler fails to detect a flame after several ignition attempts, causing it to shut down as a safety precaution. The most common reasons include a worn-out spark electrode that can no longer light the gas, or a faulty gas valve that isn't letting fuel into the burner. In some cases, the internal control board may be failing to send the correct signals to start the ignition process.
DIY fix possible
Check that your gas pre-pay meter has credit (if applicable)Verify that other gas appliances in your home are workingPress and release the reset button once to restart the ignition sequence
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 LED 1 (RESET) Constant Light — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Glow-worm Micron 30ff is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
Affiliate links — we may earn a commission at no extra cost to you.