E02 High

ECA E02 Fault Code

The ECA E02 fault code means: your boiler thinks a flame is present even though no gas should be flowing, which is a safety conflict that has caused the system to lock itself down.. It appears on 4 ECA models 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: False Flame Signal (lockout) — flame detected while gas valve is closed; press Reset; if persists notify ECA authorised service
Typical repair cost £120-280 (including labour)

DIY fix possible

Press the Reset button on the control panel onceEnsure there is no moisture around the display or controlsIf the fault returns immediately after resetting, turn off the boiler and call a Gas Safe engineer

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ECA models that show the E02 fault code

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

Source

ECA E02 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