Emergency
25 on Main Combi 30 HE

Your boiler has detected that it is overheating and has automatically shut down to prevent damage or dangerous conditions.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description

Safety Thermostat Activated (Boiler or Flue)

Engineer required

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

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