BoilerFaultCodesECA 133 Fault Code
The ECA 133 fault code means: your boiler has tried to light several times but has failed to produce a flame, meaning your heating and hot water will not work.. It appears on 1 ECA model in our database.
Technical description: Safety time exceeded for flame formation
DIY fix possible
Check that your gas prepayment meter has credit (if applicable)Ensure your external gas emergency control valve is in the 'on' positionPress and hold the 'R' or Reset button for 3 seconds to attempt a restart
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ECA models that show the 133 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
ECA 133 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