Vokera APPLIANCE FIRES THEN LOCKOUTS Fault Code
Also written as APPLIANCEFIRESTHENLOCKOUTS — same fault.
The Vokera APPLIANCE FIRES THEN LOCKOUTS fault code means: your boiler is struggling to keep its flame lit because it cannot get the right amount of gas or properly vent its waste gases, so it is shutting down for safety.. It appears on 4 Vokera models in our database.
Technical description: INCORRECT GAS PRESSURE or FLUE BLOCKED OR BROKEN
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 APPLIANCE FIRES THEN LOCKOUTS fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera APPLIANCE FIRES THEN LOCKOUTS 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