BoilerFaultCodesYour boiler is currently blowing air through its system to clear any leftover gases before it tries to fire up again.
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 fan is purging the system.
What causes this fault?
This isn't actually a fault, but a normal safety procedure where the fan runs to clear any unburnt gas or fumes from the combustion chamber. It usually happens immediately after a heating cycle finishes or right before the boiler attempts to ignite again. If the code stays on screen for a long time without the boiler firing, it may indicate that the air pressure switch hasn't sensed enough airflow to move to the next step.
DIY fix possible
Wait for the boiler to finish its cleaning cycleCheck if the display changes to a normal operating temperature after a few minutesEnsure there are no obstructions around the external flue pipe
Find a Gas Safe engineer
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A boiler cover plan would cover faults like 1 — no call-out fees, no surprises.
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