What does the Saunier Duval Spark does not stop fault code mean?

Your boiler is struggling to confirm that the pilot light has successfully ignited, causing it to keep clicking as if trying to start repeatedly.

How much does it cost to fix Saunier Duval error code Spark does not stop?

Typical repair cost for the Saunier Duval Spark does not stop fault is £200-450 including labour.

With pilot lit, check electrical supply polarity and electrode/connection contact. If satisfactory replace PCB.

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.

Safety-critical — turn off, read this.