BoilerFaultCodesWhat the manual says
Manufacturer manualFault code
From this model's manual
Verified against the Main/Main Eco Compact System installation & service manual.
DIY fix possible
Locate the filling loop under the boiler, which is usually a small silver braided hose with one or two valves.Ensure both ends of the filling loop are firmly closed, as a leaking valve is the most common cause of rising pressure.If the pressure remains high, vent (bleed) one of your radiators slightly to release excess water until the boiler pressure gauge drops to the green zone (typically 1.0 to 1.5 bar).
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Related fault codes
All 20 fault codes on the Eco Compact System
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