BoilerFaultCodesYour boiler has stopped working because the water pressure inside your heating system has dropped too low.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Loss of pressure shown on gauge - Leak on system or appliance
DIY fix possible
Locate the filling loop (usually a silver braided hose with one or two valves) underneath the boiler.Open the valve(s) slowly to allow water into the system while watching the pressure gauge.Close the valve(s) tightly once the needle reaches the green zone, typically between 1.0 and 1.5 bar.
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A boiler cover plan would cover faults like 12 — no call-out fees, no surprises.
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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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