BoilerFaultCodesYour boiler has lost the correct water pressure needed to run efficiently and will not provide heating or hot water until this is corrected.
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 external filling loop, usually a small silver braided hose with one or two valves located underneath the boiler.Gradually open the valve(s) to allow mains water into the system while watching the pressure gauge on the front of the boiler.Close the valve(s) securely once the needle reaches the green zone, typically between 1 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 Celtic 2 24 Rsc 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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