Medium
8.i on Chaffoteaux Celtic 24 HE

Your boiler is struggling to move water because there is air trapped inside the pipework or the pump.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Pump noisy - Air in system

DIY fix possible

Turn off the boiler and allow the radiators to cool.Use a radiator key to bleed all radiators in the house, starting from the ground floor.Check the boiler pressure gauge and top it up to between 1 and 1.5 bar if it has dropped.

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