Your boiler is currently attempting to start up and light the flame to provide heating or hot water.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Boiler is igniting
What causes this fault?
This code appears when the boiler is actively trying to light the gas to begin heating your home or water. It is a normal part of the start-up sequence and does not indicate a mechanical failure. If the code stays on the screen without the boiler firing up, it may be struggling to sense the flame or receive enough gas.
DIY fix possible
Wait a few moments for the boiler to complete the ignition sequenceCheck if the display changes to a temperature reading or a different status codeEnsure your gas supply is active if the code persists without the boiler firing up
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 C2 — no call-out fees, no surprises.
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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.
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