BoilerFaultCodesVokera E00 Fault Code
The Vokera E00 fault code means: your boiler thinks it sees a flame even though it isn't currently firing, which is a safety conflict that prevents it from starting up.. It appears on 1 Vokera model in our database.
Technical description: False flame
What causes the Vokera E00 fault?
This fault occurs because the internal sensors detect a flame after the boiler has finished its heating cycle or before it has even started. The most common cause is a faulty ionisation electrode that is sending an incorrect signal to the control board, or a gas valve that is failing to close fully and allowing a tiny amount of fuel to stay lit.
This fault can sometimes be more frequent during periods of high humidity or heavy rain, as moisture ingress into the casing can interfere with the sensitive electrical signals of the flame sensors.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Vokera models that show the E00 fault code
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Source
Vokera E00 fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026