Emergency
OVERHEAT PROTECTION TEST on Worcester Bosch 24CDi BF

Your boiler has failed a safety check because it is unable to automatically shut off the burner if the water temperature gets dangerously high.

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

Burner fails to shut down if the Gas-to-Water heat exchanger water exceeds 100°C. Replace system overheat thermostat.

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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