How much does it cost to fix Saunier Duval error code Does pilot light? (NO)?

Typical repair cost for the Saunier Duval Does pilot light? (NO) fault is £150-250 including labour.

Does pilot light? (NO) High

Saunier Duval Does pilot light? (NO) Fault Code

Q: What does the Saunier Duval Does pilot light? (NO) fault code mean?

Your boiler is failing to ignite because the small flame that starts the main burner is not lighting, meaning you currently have no heating or hot water.

Also written as DOESPILOTLIGHTNO — same fault.

The Saunier Duval Does pilot light? (NO) fault code means: your boiler is failing to ignite because the small flame that starts the main burner is not lighting, meaning you currently have no heating or hot water.. It appears on 2 Saunier Duval models in our database.

Technical description: Check for pilot jet blockage, incorrect electrode adjustment. If satisfactory replace multi-functional control.

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 Does pilot light? (NO) fault code

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

Source

Saunier Duval Does pilot light? (NO) 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