High
Safety disconnection (General) on Saunier Duval Opalia

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.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

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

Engineer required

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

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