Safety disconnection (General) High

Saunier Duval Safety disconnection (General) Fault Code

Q: What does the Saunier Duval Safety disconnection (General) fault code mean?

Your water heater has detected a safety issue and stopped working as a precaution because it cannot get the gas supply it needs to start.

Q: How much does it cost to fix Saunier Duval error code Safety disconnection (General)?

Typical repair cost for the Saunier Duval Safety disconnection (General) fault is £100-250 including labour.

Also written as SAFETYDISCONNECTIONGENERAL — same fault.

The Saunier Duval Safety disconnection (General) fault code means: your water heater has detected a safety issue and stopped working as a precaution because it cannot get the gas supply it needs to start.. It appears on 2 Saunier Duval models in our database.

Technical description: The water-heater will not run = no gas flow. Check gas supply and pressure.

Typical repair cost £100-250 (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 Safety disconnection (General) fault code

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

Source

Saunier Duval Safety disconnection (General) 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