BoilerFaultCodesChaffoteaux EXPLOSIVE IGNITION Fault Code
Also written as EXPLOSIVEIGNITION — same fault.
The Chaffoteaux EXPLOSIVE IGNITION fault code means: your boiler is struggling to light smoothly, resulting in a small mini-explosion inside the unit when it finally fires up, which can damage your internal components.. It appears on 5 Chaffoteaux models in our database.
Technical description: I) Pilot; II) Slow ignition device stuck or wrongly adjusted
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 EXPLOSIVE IGNITION fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Chaffoteaux EXPLOSIVE IGNITION fault code information on this page is sourced and cross-checked against the official Chaffoteaux service / installation manuals for each affected model.
- Chaffoteaux Britony Duo 55 manual (PDF)
- Chaffoteaux Britony II 50FF manual (PDF)
- Chaffoteaux Corvec 28 OF BF manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026