BoilerFaultCodesJohnson Starley FLAME CIRCUIT FAILURE Fault Code
Also written as FLAMECIRCUITFAILURE — same fault.
The Johnson Starley FLAME CIRCUIT FAILURE fault code means: your boiler has stopped working because it cannot safely detect that the flame is lit, so it has shut down to prevent gas from building up.. It appears on 2 Johnson Starley models in our database.
Technical description: Critical failure in the flame detection circuit
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Johnson Starley models that show the FLAME CIRCUIT FAILURE fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Johnson Starley FLAME CIRCUIT FAILURE fault code information on this page is sourced and cross-checked against the official Johnson Starley service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026