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

Typical repair cost for the Chaffoteaux E 04 fault is £120-250 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 flame needed to heat your home's water, so it has stopped working for safety reasons.

Also written as E04 — same fault.

The Chaffoteaux E 04 fault code means: your boiler is failing to light the flame needed to heat your home's water, so it has stopped working for safety reasons.. It appears on 1 Chaffoteaux model in our database.

Technical description: The boiler checks that the burner has lit, if the boiler does not sense that the burner has lit, the error code E04 will appear on the display, should this error occur, the boiler will attempt to relight two more times (20 seconds between each attempt).

Typical repair cost £120-250 (including labour)

Engineer required

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

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Chaffoteaux models that show the E 04 fault code

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

Minima HE Repair: £120-250

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 27 April 2026