BoilerFaultCodesECA 177 Fault Code
The ECA 177 fault code means: your boiler has detected that the water pressure has dropped too low to operate safely, causing the system to shut down.. It appears on 1 ECA model in our database.
Technical description: Water pressure 2 is too low
DIY fix possible
Locate the filling loop (usually a silver flexible hose) underneath the boiler.Slowly open the small valves on the hose until you hear water flowing.Watch the pressure gauge and close the valves once it reaches between 1.0 and 1.5 bar.
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ECA models that show the 177 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
ECA 177 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