BoilerFaultCodesBaxi Pilot On Fault Code
Also written as PILOTON — same fault.
The Baxi Pilot On fault code means: your boiler is struggling to keep its small pilot flame lit, which prevents the main heating system from starting up.. It appears on 3 Baxi models in our database.
Technical description: Indicator light - Check for constant spark at the electrode, pilot injector blockage, and gas pressure
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Baxi models that show the Pilot On fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Baxi Pilot On fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026