High
Overheat thermostat (240XP) on Alpha 240XE

Your boiler has detected that it got too hot and has automatically shut itself down for safety, meaning your pilot light has gone out and needs to be relit.

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 pilot is turned off and will have to be relit

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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