Medium
1 P1 on Ariston E-Combi One

Your boiler has detected that water is not moving around your heating system fast enough, often due to trapped air or a closed valve.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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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

Insuffi cient circulation indication

DIY fix possible

Check that all radiator valves throughout your home are fully openCheck your boiler display to ensure the system pressure is between 1 and 1.5 barBleed all radiators in the house to release any trapped airReset the boiler using the reset button on the control panel

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Related fault codes

1P2View →1P3View →

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