BoilerFaultCodesRemeha E01 Fault Code
The Remeha E01 fault code means: your boiler has tried to start up but cannot light the gas to create a flame.. It appears on 3 Remeha models in our database.
Technical description: Ignition failure
What causes the Remeha E01 fault?
This fault occurs when the boiler's control system attempts to start the combustion process but fails to detect a flame after several attempts. It is usually caused by a lack of gas supply, a worn-out ignition spark electrode that can no longer create a spark, or a faulty gas valve that isn't opening correctly.
While this can happen year-round, it often occurs during the first cold snap of winter when the gas valve may stick after being dormant during the summer months.
DIY fix possible
Check that your gas supply is turned on at the meter.If you have a prepaid gas meter, check that you have remaining credit.Press the Reset button for two seconds to see if the boiler restarts.
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Remeha models that show the E01 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha E01 fault code information on this page is sourced and cross-checked against the official Remeha service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026