Low
F8 on Alpha Intec 50CS

Your boiler is currently running an automated 18-hour maintenance cycle to remove trapped air bubbles from your heating system, and you should simply wait for this process to complete.

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

System deaeration in progress. During this phase, which lasts 18 hours, the boiler pump is started at pre-established intervals, thus allowing deaeration of the central heating system.

DIY fix possible

Wait for the 18-hour cycle to complete automaticallyMonitor your radiator valves for any air locksIf you must use the boiler immediately, try turning the power off and back on to reset the timer

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