BoilerFaultCodesYour boiler is currently going through its starting sequence and is trying to ignite 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: Ignition
What causes this fault?
This status occurs when the boiler begins its internal startup process to create a flame. It is a natural part of the ignition cycle where the fan, gas valve, and electrodes coordinate to light the burner. If this code stays on screen for a long time, it suggests the boiler is struggling to establish a stable flame to begin heating.
DIY fix possible
Wait for a few minutes as this is a normal status code, not a permanent fault.Check if your thermostat is calling for heat.Ensure your gas supply is turned on at the meter.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like S.3 — no call-out fees, no surprises.
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