How much does it cost to fix Chaffoteaux error code EXPLOSIVE IGNITION?

Typical repair cost for the Chaffoteaux EXPLOSIVE IGNITION fault is £150-250 including labour.

EXPLOSIVE IGNITION Emergency

Chaffoteaux EXPLOSIVE IGNITION Fault Code

Q: What does the Chaffoteaux EXPLOSIVE IGNITION fault code mean?

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.

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

Typical repair cost £150-250 (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 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.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026