Low
F5 on Alpha Intec 50CS

Your boiler is simply cooling itself down after use, which is a normal part of its automatic shutdown process.

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

Post circulation in progress. Pump operating after a request for domestic hot water or central heating in order to cool the primary circuit.

DIY fix possible

Wait for the pump to finish its cooling cycleCheck that the display returns to normal after a short periodEnsure your radiator valves are open to help heat dissipate

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