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
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