How much does it cost to fix Saunier Duval error code E16?

Typical repair cost for the Saunier Duval E16 fault is £150-250 including labour.

E16 High

Saunier Duval E16 Fault Code

Q: What does the Saunier Duval E16 fault code mean?

Your boiler is struggling to confirm that the flame has properly extinguished after it has finished heating, which prevents it from safely starting again.

The Saunier Duval E16 fault code means: your boiler is struggling to confirm that the flame has properly extinguished after it has finished heating, which prevents it from safely starting again.. It appears on 6 Saunier Duval models in our database.

Technical description: Ionisation fault (flame detected after burner off)

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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Saunier Duval models that show the E16 fault code

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

Source

Saunier Duval E16 fault code information on this page is sourced and cross-checked against the official Saunier Duval service / installation manuals for each affected model.

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