PILOT FLAME DOES NOT LIGHT Emergency

Chaffoteaux PILOT FLAME DOES NOT LIGHT Fault Code

Also written as PILOTFLAMEDOESNOTLIGHT — same fault.

The Chaffoteaux PILOT FLAME DOES NOT LIGHT fault code means: your boiler is failing to ignite because it is not receiving a steady supply of gas to create the pilot flame needed to start the system.. It appears on 5 Chaffoteaux models in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: i) Gas service cock closed ii) Air in pipe iii) Pilot injector blocked iv) Main filter blocked
Typical repair cost £120-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Chaffoteaux models that show the PILOT FLAME DOES NOT LIGHT fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Chaffoteaux PILOT FLAME DOES NOT LIGHT fault code information on this page is sourced and cross-checked against the official Chaffoteaux service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026