Low
A xx on Atag A200

Your boiler is currently running a routine air-removal cycle to ensure the system is clear of air bubbles, which is a normal process after a restart or refill.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

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

Automatic venting program / de-aeration programm in progress (takes 17 minutes)

DIY fix possible

Wait 17 minutes for the cycle to complete automaticallyEnsure all radiator valves are open to help move air through the systemOnce finished, the boiler should return to normal operation without intervention

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