How much does it cost to fix Chaffoteaux error code E 04?

Typical repair cost for the Chaffoteaux E 04 fault is £150-300 including labour.

E 04 High

Chaffoteaux E 04 Fault Code

Q: What does the Chaffoteaux E 04 fault code mean?

Your boiler is failing to light the internal flame needed to produce heat and hot water, so it has shut down as a safety precaution.

Also written as E04 — same fault.

The Chaffoteaux E 04 fault code means: your boiler is failing to light the internal flame needed to produce heat and hot water, so it has shut down as a safety precaution.. It appears on 3 Chaffoteaux models in our database.

Technical description: No flame detection

Typical repair cost £150-300 (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 E 04 fault code

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

Source

Chaffoteaux E 04 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 31 August 2026