BoilerFaultCodesYour boiler is struggling to circulate water because trapped air is causing the pump to run loudly and inefficiently.
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 separator not venting
DIY fix possible
Switch off the boiler and allow it to cool completely.Locate the manual air bleed valve on the boiler's air separator or nearby pipework.Using a radiator key or screwdriver, gently open the valve until water flows steadily without air hissing, then close it securely.Check your system pressure gauge and top up to 1.5 bar if necessary.
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Chaffoteaux Sterling FF is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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