High
Overheat Thermostat operates on Alpha 240XE

Your boiler has become too hot and has shut itself down completely, including the pilot light, as a safety precaution.

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

Automatically switches the boiler off in the event of the boiler overheating. Turns the pilot off.

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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