BoilerFaultCodesRemeha E01 Fault Code
The Remeha E01 fault code means: your boiler has tried to start but failed to light the flame, leaving you without heating or hot water.. It appears on 8 Remeha models in our database.
Technical description: Failure to ignite
What causes the Remeha E01 fault?
This fault occurs when the boiler's control system fails to detect a steady flame after several attempts to start. It is usually caused by a worn ignition spark that cannot light the gas, or a dirty sensor that fails to tell the boiler the flame is actually lit. In some cases, the gas valve may be stuck or electrical components have failed, preventing the combustion process from beginning.
This fault can appear more frequently during the first cold snap of autumn when internal components that have been idle all summer struggle to move or ignite correctly.
DIY fix possible
Check if other gas appliances in your home, such as a hob, are working correctly.Ensure your gas meter has credit and the isolation valve is open.Press and hold the 'Reset' button for two seconds to see if the boiler restarts.
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Gas Safe Register →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 27 April 2026