BoilerFaultCodesECA 2 Fault Code
The ECA 2 fault code means: your boiler has detected that the water pressure inside the system is dangerously high, which can put stress on the pipes and components.. It appears on 2 ECA models in our database.
Technical description: High Water Pressure Risk
DIY fix possible
Locate the filling loop valves connected to your boiler.Ensure both valves are fully closed and not letting in extra water.Bleed one of your radiators slightly using a radiator key to release pressure until the gauge drops to the normal 1 to 1.5 bar zone.
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ECA models that show the 2 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
ECA 2 fault code information on this page is sourced and cross-checked against the official ECA service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026