BoilerFaultCodesECA 176 Fault Code
The ECA 176 fault code means: your boiler has detected that the water pressure inside the system has reached a level that is too high for safe operation.. It appears on 1 ECA model in our database.
Technical description: Water pressure 2 is too high
DIY fix possible
Check that the filling loop valves (under the boiler) are closed tightly.Bleed some water from a radiator using a radiator key until the pressure gauge falls back to 1.5 bar.Restart the boiler to see if the fault clears.
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ECA models that show the 176 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
ECA 176 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 7 July 2026