128 High

ECA 128 Fault Code

The ECA 128 fault code means: your boiler started correctly but the flame went out unexpectedly while it was running, causing the system to shut down for safety.. It appears on 1 ECA model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Flame loss in operation
Typical repair cost £100-£280 (including labour)

DIY fix possible

Check that your gas emergency control valve is fully openIf you have a pre-pay gas meter, ensure you have sufficient creditReset the boiler using the 'R' or Power button to see if the fault clears

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ECA models that show the 128 fault code

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

Source

ECA 128 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