117 Emergency

ECA 117 Fault Code

The ECA 117 fault code means: your boiler has too much water inside it, which is putting excess pressure on the system.. It appears on 1 ECA model in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: Water pressure is too high
Typical repair cost £80-200 (including labour)

DIY fix possible

Check that the filling loop valves (under the boiler) are tightly closed.Turn off the boiler.Bleed water from a radiator using a radiator key until the pressure gauge returns to the green zone (around 1.5 bar).Restart the boiler.

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ECA models that show the 117 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

ECA 117 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