BoilerFaultCodesYour boiler is currently running a self-cleaning routine to remove trapped air bubbles from the internal pipes and pump.
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: Appliance is in Air purge mode, see service function 2.C.
What causes this fault?
This occurs when air becomes trapped within the boiler's heat exchanger or pump, often following a recent repair or system refill. The boiler automatically detects this air and triggers a programmed sequence to pulse the pump and vent the bubbles safely to ensure efficient operation. It isn't a mechanical failure, but rather a protective routine to prevent the system from overheating.
This code is more common in autumn when homeowners first switch their heating back on or bleed their radiators after a long period of disuse.
DIY fix possible
Wait for the timer to count down; the process usually takes 2 to 10 minutes.Ensure your radiator valves are open to help move air through the system.Check the pressure gauge is between 1 and 1.5 bar; top up if it has dropped.
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